Company details for:

Knight Strip Metals

(0)

Linkside Business Centre,
Cranborne Industrial Estate,
Summit Road,
Potters Bar,
Hertfordshire,
EN6 3JL,
United Kingdom

Quick Links:

Products

Austenitic Stainless Steels

Austenitic Stainless Steels

Austenitic Steel is a non-magnetic form of Stainless Steel. They possess a range of beneficial chemical and mechanical characteristics and are the most commercially popular alloy group within the Stainless Steel family. Austenitic Stainless Steels get their name from the high temperature form of Iron with Carbon in solid solution, known as Austenite, which is non-magnetic. Traditionally, Austenitic Stainless Steels have an 18% chromium, 8% Nickel Alloy content, commonly known as 18/8 Stainless. As a group, they have excellent toughness and good formability. Increasing the Chromium and Nickel content, increases corrosion resistance. Increasing other elements, such as Molybdenum, can also further improve corrosion resistance. Austenitic Stainless Steels are not heat treatable. However, cold working can improve their mechanical properties, including strength, hardness, and stress resistance.

The most common Stainless Steel among Manufacturers are the Austenitic 300 Series Alloys. These alloys offer the full range of possibilities available when altering alloying levels. In the fully annealed condition, they are essentially non-magnetic. Nonetheless, cold working of the less alloyed grades will induce structural changes leading to increased levels of magnetism. Grades with a lower Carbon content are identifiable with the addition of the “L” after their name. The cost of 300 Series fluctuates due to the availability and cost of Nickel.

200 Series Alloys contain a lower Nickel content and additional Nitrogen. Consequently, this makes 200 Series Stainless Steels a lower cost alternative to the 300 Series.
Ferritic Stainless Steels

Ferritic Stainless Steels

Ferritic Stainless Steels get their name because these alloys share the same structure as iron, when at room temperature. These alloys have a minimum Chromium content of 11%, low Carbon levels and contain no Nickel. Despite the lack of Nickel, they still provide fair corrosion resistance and stress corrosion cracking hesitance, as well as good formability. Whilst not as popular as Austenic Alloys, Ferritic Alloys comparatively possess better engineering properties. Furthermore, without Nickel, they provide a lower cost option to manufacturers. Increasing the Chromium levels can improve corrosion resistance, however, these alloys have low work hardening rates. Unlike other alloys, they do not develop high strength from cold working and remain magnetic in all tempers.

Nonetheless, Ferritic Stainless Steels are the ideal solution for high volume applications, particularly in domestic environment where moderate corrosion resistance is acceptable. Application include hinges and stays in the UPVC window hardware industry, domestic appliances such as washing machines, cutlery and kitchen utensils. Ferritic Grades can also be found in a range of Automotive applications, including exhaust systems and trims.
Martensitic Stainless Steels

Martensitic Stainless Steels

Martensitic Stainless Steel is a low cost form of Stainless metal strip. These alloys are magnetic and are generally formed in the annealed condition, then heat treated. Martensitic grades typically contain 12-15% Chromium, with Carbon as the key alloying element. Carbon content can range from as low as 0.1% to over 1%. The variation in the Carbon content, in addition to the other possible alloying elements, provides this group with a wide range of desirable mechanical properties. Whilst not as popular as other Stainless Steel grades, Martensitics offer high strength, good toughness, and good heat resistance. These grades also posses a moderate to good corrosion resistance, depending on the their Chromium content. Moreover, the higher Chromium content in some Martensitic grades, such as 431, offer a similar level of corrosion resistance to the Austenitic grade 304.

Martensitic grades equally share similarities with some Carbon Steels. To improve toughness and ductility, they undergo a hardening process of quenching then tempering. Ultimately, it is the Carbon content of the alloy increases the strength properties. However, increasing Carbon to increase strength, consequently comes at the expense of toughness and ductility.

As a result of its low cost and moderate corrosion resistance, this group is ideal for many applications. In fact it was the first to be commercially developed as cutlery steel. However, it is its high strength and toughness properties that result in Martensitic grades being found across multiple industry sectors. Uses include surgical instruments within hospitals, valves, pumps and other components for the Oil and Gas industry, through to turbines and gears in Aerospace manufacturing. Furthermore, these grades are highly useful for manufacturing complex spring shapes, requiring a soft steel for forming.
Precipitation Hardened Alloys

Precipitation Hardened Alloys

Precipitation Hardened Alloys are one of the five groups of the Stainless Steel family. Stainless Steel Alloys within this group, offer the optimum combination of properties found in the Austenitic and Martensitic grades of Stainless Steel. Sometimes known as Aged Hardened Alloys, they posses a higher Carbon content in comparison to the Ferritic Stainless Steel group. As a result of higher Carbon content, these alloys can harden through air, oil or water cooling, to improve their strength. In fact, some grades can offer strength properties between three and four times higher than Austenitic Stainless Steel grades, such as 304 and 316.

Other key alloying elements include Aluminium, Titanium, Niobium and Molybdenum, either in combination or on their own. Consequentially, this alloy grade offers manufacturers many superior properties, combining high work hardening rates and very high strengths, superior fatigue properties, good corrosion resistance. Equally there is minimum distortion when heat treated. In addition to these properties, this group of Stainless Steel Alloys, offer good formability.

There are three further subdivisions of Precipitation Hardened Stainless Steel, low carbon martensitic, semi-austenitic and austenitic. The most common alloy grade 17/4PH falls into the Martensitic category. Another common gradeis 17-7PH, a austenitic-martensitic type alloy, which is ideal for Aerospace applications, Spring manufacturing and Surgical instruments.
Super Alloys

Super Alloys

Duplex Stainless Steel strip has a dual Austenitic-Ferritic structure. These magnetic alloys are not hardenable by heat treatment, but offer many additional advantages over other Stainless Steels. Manufacturers choose these alloys for a wide range of applications due to their higher annealed strengths, stress relaxation and fatigue properties, superior tensile strength, greater corrosion and pitting resistance and lighter weight. These alloys gain their mechanical strength from alloying with Nitrogen. Furthermore, the high higher strengths support a reduction in weight. This in turn offers environmental benefits over other Steels as the lower weight reduces transport and assembly costs.

As a result of their attractive combination of properties, it is common to describe Duplexes as Super Alloys. These Super Alloys can be strengthened by cold work and has lower thermal expansion and higher heat conductivity than Austenitic Steel strip. They also offer a low cost alternative to Austenitic Stainless Steels, owing to their lower Nickel content. Alternatively, Super Duplex has a higher Chromium content than standard Duplex, offering further mechanical and corrosion resistance. Due to superior corrosion resistance lends makes these alloys ideal for more demanding environments including Marine, Petrochemical, and Nuclear Power Generation.

Though in existence since the 1920s, advancements allowing greater control of the Nitrogen element have made Duplexes a more popular choice for modern manufacturing. As the applications for Super Alloys rises, demand increases and incentivises the development and release of additional grades. We work closely with the mills and therefore we are able to offer the latest innovations in material development, ensuring you keep your competitive edge.
Stainless Steel Tool Wrap

Stainless Steel Tool Wrap

KNUFOIL is a special Stainless Steel alloy foil, commonly used for tool wrap applications.

Our Stainless Steel Tool Wrap provides a quick and low cost method of protecting the surface of tools, dies and other parts during the hardening process by preventing decarburization (scaling). Protecting the surface of your tools is simple using KNUFOIL to create envelopes. These Tool Wrap envelopes lock out the air and as a result, eliminate the need for expensive protective atmosphere furnaces. Furthermore, this process only increases hardening time by two or three minutes.

A further major advantage is the option to use a faster quenching medium, − for example, using water rather than oil. This is due to the insulating effect of KNUFOIL in the quenching medium, which is sufficient to reduce the risk of cracking that is normally the result of using of a faster quench. Equally, it eliminates the need for encapsulating or coating the product in a protective material, which might be difficult to remove after hardening. By using our Tool Wrap, manufactures have a low cost alternative to using expensive protective atmosphere furnaces.

We supply KNUFOIL is our standard width of 610 mm. Other widths are available upon request, please contact our sales team for further information. You can purchase KNUFOIL directly from our sister website, KSM Direct. We offer bulk pricing on two or more rolls.
Nickel & Nickel Alloys

Nickel & Nickel Alloys

Nickel is a very versatile metal, both in pure form and with the addition of other alloying elements. Its versatility comes from an ability to withstand a wide variety of severe operating conditions, including: corrosive environments, high temperatures, high stresses, and combinations of these factors. As a result, Nickel Alloys have extensive commercial uses for manufacturers across the globe. Although popular in its commercially pure forms, due to its ability to alloy with a range of metals, these alloys are at the forefront of modern metallurgy. Due to the growth of industrial sectors demanding metals alloys with high strength and excellent corrosion resistance as high temperature, the development of Nickel Alloys. With a multitude of alloying options available, this group of alloys, offers manufacturers the flexibility to meet specific requirements in many different types of environment.

There are many commercial applications for Nickel Alloys, with extensive use in Aerospace, Nuclear Plants, Medial, Chemical and Petrochemical industries.

The most commercially popular forms of Nickel Alloys fall into the following categories:
> Commercially Pure Nickels
> Nickel-Copper Alloys
> Nickel-Chromium & Nickel-Chromium-Iron Alloys
> Iron-Nickel-Chromium Alloys (800 Series)
> Controlled Expansion Alloys
Aluminium

Aluminium

Aluminium is the third most abundant resource on the planet. It is used widely across many manufacturing sectors due to the ease of machining and forming, requiring low energy input making it highly cost efficient. Consequently it is ideal for extrusion work, milling, drilling, cutting, punching and bending in large or small volumes.

Though commonly found within the Construction industry, the physical properties of Aluminium and its alloys, make it an essential material for Aerospace Automotive and Transport sectors. These Alloys also offer significant environmental advantages with zero toxicity and ease of recycling without changing its integral properties. The low cost in conjunction with material availability, beneficial physical properties and ease of formability makes it an ideal choice for large volume production. This has made it a popular choice for beverage packaging, but also has wider use within Food and beverage production.

Aluminium is a lightweight, soft ductile metal with nonmagnetic and corrosion resistant properties. Furthermore, it has approximately a third of the density of steel, but this does not impact its strength. It is also more durable at lower temperatures and unlike Steels will not become brittle, but actually becomes stronger at low temperatures. However, when heated above 100°C, this can affect strength.

Alloys are available in a range of surface finishes, ranging from dull to reflective, making these alloys ideal for decorative features and metal products.
Titanium & Titanium Alloys

Titanium & Titanium Alloys

Titanium has been a known element for many years, but it is only in the last 50 years or so that its importance has truly grown. The rapid growth of the Titanium industry is due to the versatility of the metal and its unique combination of features. These features include excellent corrosion resistance, outstanding strength to weight ratios and low weight. The mechanical properties of Commercially Pure Titanium grades vary considerably with small changes within the chemical composition of Oxygen, Nitrogen, Hydrogen and Carbon. These alloys exists in two crystallographic forms and its alloys can be put into one of three categories:

> Alpha
> Alpha/Beta
> Beta alloys

Pure Titanium has an alpha structure. However, this transforms to a beta form as a result of being heated above 882°C. The addition of alloying elements influences this transformation. Many alloys have been developed where the beta phase is retained at room temperature. This provides a material containing alpha and beta phases. The relative amounts of these phases give rise to variations in properties such as ductility, weldability and ease of forming.

Owing to its property strengths, Titanium has becoming a vital material across a number of industry sectors. Chemical process industries rely on outstanding corrosion resistance, consequently making Commercially Pure Titanium strip an ideal material choice. Other demanding applications within Aerospace, such as static and rotating gas turbine engine components, also require a combination of corrosion resistance, low weight and high strength. The ability to withstand some of the most critical and highly stressed conditions has made it ideal for use in civilian and military airframe parts.
Copper & Copper Alloys

Copper & Copper Alloys

Copper and Copper Alloys form an important group of metals with many excellent properties. They have very good electrical and thermal conductivities, offering twice the conductivity of Aluminium and thirty times the conductivity of Stainless Steel. Copper Alloys have high ductility and are easy to fabricate, with ease of brazing and solderability. This group has many advantageous characteristics and include alloys of exceptional strength (notably Copper Beryllium Alloys) and corrosion resistance as well as antimicrobial properties. The characteristics of Copper and Copper Alloys have resulted in extensive use of those alloys in a very wide range of applications. Copper is most commonly used in electrical and electronic applications, accounting for half of the Copper produced today. These Alloys can be formed, pressed, deep drawn or photochemically etched into the most complex of shapes. In general terms the important commercial alloy groups are:

> Commercially Pure High Conductivity Coppers
> Brasses
> Phosphor Bronzes
Mild & Carbon Steel

Mild & Carbon Steel

Plain Carbon Steel strip has a very wide range of applications because it is particularly adaptable to low cost techniques of metal forming such as presswork. These materials combine ease of fabrication with adequate strength and excellent finishing characteristics. As a result, they provide a good surface finish on the final article.

The Knight Group range of Carbon Steels can be broadly split into two categories:

LOW CARBON MILD STEELS
HIGH CARBON SPRING STEELS

Spring Steels are available in the annealed condition for hardening after forming, or in the hardened and tempered condition.
Plated Steel

Plated Steel

Pre-plated strip is produced by applying a thin layer of material onto the surface of another; less costly metal, commonly mild and stainless steels. This can provide a decorative surface finish whilst reducing the cost of the material, making it ideal for a number of applications, including interior decorative features such as hand rails, light fittings, fireplaces, curtain poles and finials, jewellery design and automotive parts. There are further benefits including improving corrosion resistance, solderability, wearability, paint adhesion, infrared reflectivity, friction reduction and altering the conductivity, depending on the combination of materials chosen. Cost reduction has made plated products an increasingly popular choice.

Plated Strip Electrical Applications

There is a growing use of plated strip steel in electrical applications − driven by increasing metal prices of the traditional non-ferrous materials used by the electrical industry.

Typical applications include…

> CONNECTORS
> SWITCHGEAR
> CIRCUIT BREAKER ARC PLATES
Clad Aluminium

Clad Aluminium

Clad products are made by bonding at least one layer of metal onto another. There are many benefits to choosing Clad Metals, particularly when a complex blend of chemical and mechanical properties are required. Whilst Copper has uses in a wide range of applications, due to excellent electrical and thermal conductivity, it is a relatively costly material. As a result, manufactures are increasingly choosing Clad Aluminium as a lower cost alternative. When you compare Clad Aluminum to Copper, it has the added benefits of superior durability and is lighter in weight. Equally, it offers many of the advantages of Aluminium, but is actually stronger than Pure Aluminium. A key benefit for manufacturers using Clad Aluminum, other than cost, is superior heat transfer performance and corrosion resistance.

Designers, engineers and manufacturers are increasingly turning to clad metals to provide material solutions, created by demanding environments and applications. The properties of Clad Aluminium lends itself to many such applications, including brazed heat exchangers for the Automotive and Aerospace industries.

In our current era of manufacturing, environmental concerns have become an increasing priority to both designers, manufacturers and end users. Clad Aluminium’s environmental benefits are similar to Pure and Alloyed Aluminium, as it is also easy, quick and cost effective to recycle.

Sourcing the right material for a wide range of products is our specialty. If you would like help in finding the right Clad Metal product for you, get in touch with our Sales Team today.
Clad Metals

Clad Metals

Clad Metals are made by joining two or more metals together through a laminating process. By combining metals, it is possible to create a material that capitalises on the superior properties that do not exist in a single metal. These properties include strength, corrosion resistance, thermal and electric conductivity, weight, surface finish, availability, cost, even material availability. Ultimately, manufactures gain infinite flexibility, as they can choose the exact blend of properties to suit both the manufacturing stage and end application requirements.

As a result, Clad Metals offer designers, engineers and manufactures the freedom to create new solutions with targeted properties for even the most unique design challenges. This makes Clad Products an ideal material of choice for demanding and high stress environments. Sectors including: Aerospace, Petrochemical, Oil and Gas, Construction, Telecommunications, Domestic Appliances, Electronics, Medical and Defence, use Clad Metals for this reason.

As Clad Metals consist of a number of layers, there are a numerous combinations possible. In particular, Clad Aluminium, has become a popular choice as an alternative to Copper. In addition to cost savings, it has the added benefit of superior durability yet lighter weight in comparison to Copper, and increased strength compared to Pure Aluminium. However, among the most valuable properties of Clad Aluminium, are its superior heat transfer performance and corrosion resistance. This lends itself to many applications, including brazed heat exchangers for the Automotive and Aerospace industries.

Sourcing the right material for a wide range of products is our specialty. So if you would like help in finding the right product for you, get in touch with our Sales Team today.
Recoiling

Recoiling

The Knight Group have invested enormously in their processing capabilities to provide customers with a full range of processing options to meet their specific production requirements. There are few recoiling facilities in the UK and Europe, but with 27 recoiling machines, the Knight Group can cater for even the largest volumes to ensure a fast turnaround time.

Recoiled metal strip material can be supplied in a wide range of coil size and weight options to facilitate your processing requirements with options that include:

> Pancake coils
> Traverse wound spools
> Open sided oscillate wound coils
> Up to 1000mm wide
> Low weight coils
> Coils on cardboard centres
Slitting & Shearing

Slitting & Shearing

The Knight Group are one of the largest independent processors in Europe, with 26 slitting and shearing machines, providing a large workload capacity and fast turnaround times to meet even the most demanding deadlines.

Our machines are state of the art, with ultrafine tolerances and a substantially superior width to thickness ratio of 3:1 compared to the industry standard of 8:1, capable of processing all material sizes and specifications.

We have a skilled team of experienced machine operators that ensure the efficient and safe running of our production facilities, with all materials handled with the care from arrival to dispatch.
Traverse Winding

Traverse Winding

With efficiency as one of our key values at the Knight Group, we have successfully developed in-house Traverse Winding to support out customers in reducing their manufacturing times and costs.

Traverse wound coils provide an alternative to single coil “pancake” form of feed supply, capable of holding up to ten times more material. Each traverse wound coil increases productivity and enables longer uninterrupted production runs, by reducing the number of coils needing to re reloaded, machine downtime and coil handling are minimised and storage and scrap can be dramatically reduced. We can offer traverse wound strip on your choice of spools from 20kg to 100kg max.
Cut to Length

Cut to Length

The Knight Group knows that manufacturers are under constant pressure to get their products processed faster and cheaper and stay ahead of their competitors. Space is also at a premium and many manufacturers do not have onsite facilities to store large quantities of material for processing to ensure minimal machine downtime.

By offering our customers material cut and packaged to their exact specifications, we help hundreds of our customers to achieve leaner manufacturing processes to maintain a sustainable and successful business. We have 8 cut to length lines, operated by a skilled and experienced team so you can rely on your material being cut quickly and with great accurately. We offer highly competitive rates to make cut to length an attractive cost and time saving decision. All material is quality checked and then carefully packed in bespoke packaging. Your material will then be available for collection from our Saltley site or you can choose a delivery to suit your business needs, with your material arriving machine ready.

Get a quote today and see how much time and money you could save.
Edge Dressing

Edge Dressing

During the production process of strip and coil, the edge of the material develops a sharp edge, commonly referred to as a burr. This sharp edge has both safety and manufacturing implications. The burr poses a potential health and safety hazard and the material can be more difficult to work with, increasing manufacturing time and ultimately costs. Edge Dressing helps minimise these risks and provides a cost effective and safe solution to manufacturers.

The Knight Group offers manufacturers the flexibility to choose the processing that meets your needs and we can supply material edge-dressed to your specifications. Whether you need the commonly requested rounded or square edge shapes or you need a contoured edge shape tailored specifically to you, we offer the Edge Dressing profile you need. We design and use Bespoke Tungsten Carbide Tooling to meet the most exacting Custom Edge Dressing requirements on Precision Strip.

With the heavy investment in our bespoke machinery and a wealth of experience in our team, our machines can offer precision processing in high volumes, with fast turnaround times.
Precision Strip Metal Warehousing & Logistics

Precision Strip Metal Warehousing & Logistics

The Knight Group offers one of the widest ranges of Precision Strip Metal in Europe. We can meet the needs of most manufacturers with an extensive range of stocked strip metal This includes Stainless Steel Nickel Alloys, Titanium Alloys, Aluminium and other metals, which are available from our major facility in Birmingham.

Our warehouse racking at our expansive facility in Birmingham, accommodates a range of coil sizes up to 5 tonnes in weight and up to 73” (1855mm) in diameter. Using turret trucks enables us to use the full height of the building and ensures a maximum level of stock can be stored. We use a computerized stock management system to ensure all incoming materials are accurately net weighed and given allocated positions. This is an an invaluable resource to our experienced Strip Metal Sales Team, giving them real-time information on stock levels. We have further facilities in Mechlen, Belgium, so wherever your business is located, we can ensure you are provided with accurate information and responsive customer service.

About us

Established in 1940, Knight Strip Metal has gained an enviable reputation in premium quality precision strip metals and wire in a range of raw materials including stainless steel, high performance alloys, mild & carbon steels, copper & copper alloys, titanium & titanium alloys, aluminium and aluminium alloys.

Knight Strip Metal, also known as Knight Group are well established in the metal industry and as such are the supplier of choice for many global organisations throughout the world. Our success is built up by our core values ensuring that you get the very best from your metal and metal processing supplier. Our mission is to become not only a local manufacturer but also deliver results on a global scale providing you with the highest quality materials and processing services.

> Quality − Our commitment to all our customers it to provide them with the very best service and top quality products giving you the highest standards that you deserve.
> Efficiency − We work alongside our customers, offering the very best service and support, helping reduce production costs without compromising on quality as well as delivering on time.
> Innovation − We strive to provide the very best service to our customers, we embrace all new challenges, creating tailored solutions that exceed expectations.
> Trust − We want our customers to be completely satisfied with our work, we build long lasting relationships due to our focused approach on ethical, responsible and fair business practices.
> Partnership − We work alongside both customers, colleagues and suppliers and value their input on the best practices to achieve goals and maintain a sustainable business.
> Investment − We continue to invest time, effort and money to provide all business partnerships success not only for our customers but also on-going business growth.

In addition to the supply of the raw materials we are also recognised as industry leaders in the processing of strip, coil and wire. These services include;

> Recoiling − supplied in a range of coil sizes and weight options including pancake coils, traverse wound spools, open sided oscillate wound coils, up to 1000mm wide, low weight coils, coils on cardboard centres
> Slitting & Shearing − for ultrafine tolerances and substantially superior width thickness ratios of 3:1
> Traverse Winding − an alternative to single coil pancake coils, increasing productivity and enables longer uninterrupted production runs
> Cut to Length − raw materials cut to exact customer specifications
> Edge Dressing − material edge dressing to your specifications reducing the risks of injury and manufacturing time.

Why choose us your metal and metal processing supplier?
With a dedicated and experienced production team with years of experience in the metal industry, the Knight Group are well equipped to offer a full range of high standard and efficient metal processing services. Whether you require slitting, shearing, traverse winding, material cut to length or edge dressing then we can help. All processing is based on a competitive price and all work carried out is flexible so that you only get the services you require.

We stock Europe's largest and most comprehensive range of precision metal strip and wire, in a variety of different grades including stainless steel, mild steel, nickel and nickel alloys, titanium and titanium alloys, aluminium and aluminium alloys, bronze and copper alloys.

We can work with all requests, whether its large volumes of metal or test materials for prototypes we can provide you with the materials you need for your project without comprising on quality or cost.

The Knight Group has worked with a number businesses including Rolls-Royce, BAE Systems, Airbus UK, Westland Helicopters and HS Marston Aerospace Ltd to name a few.
Knight Strip Metals Website

Trade Associations

BSI Registered UKAS Quality Management Logo
British Stainless Steel Association Logo

Request a Quote