Stainless Steel

ISO certified stainless steel that shines on through without a care that rust never sleeps


Stainless steel stockholders and suppliers, delivering to the whole of the UK. Stainless steel grades are stocked in round bar, flat bar and plate (plasma cut). Specifications supplied include precipitation hardening, duplex, super duplex, austenitic and martensitic. Stainless steel grades are supplied in a large range conforming to British, European, American and International standards.

We welcome export enquiries for stainless steel. Contact our sales office and consult our shipping policy for further details.

If you do no find the specification you require on our web site please contact our experienced sales team who may be able to assist you with your enquiry.

Form of Supply

West Yorkshire Steel are stainless steel suppliers and stockholders of round bar, flat bar, sheet and plate. Diameters can be sawn to your required lengths as one offs or multiple cut pieces.

Plasma cut stainless steel plates can be cut to your required sizes, we can also guillotine stainless steel sheet.

Ground stainless steel bar can be supplied, providing a quality precision finished bar to your required tolerances.

Contact our experienced sales team who will assist you with your enquiry.

  • Sheet
  • Plate
  • Flat
  • Diameter
  • Hexagonal
  • Tube

Click on the headings below for further information

Precipitation Hardening Stainless

The main characteristics of precipitation hardening stainless specifications are the combination of the corrosion resistance of an austenitic stainless with the hardenability of a martensitic stainless.

ASTMWerkstoffDINFirth Vickers
A564 Grade 6301.4542X5CrNiMoCuNb145PHFV520B
17/4PH Condition A1.4594
H1150+H1150

High contents of chromium, nickel, molybdenum and nitrogen give high alloyed austenitic stainless steel grades different characteristics to those of standard austenitic specifications. 904L has similar mechanical properties to the more common austenitic grades but has superior resistance to uniform corrosion. UNS S31254 provides exceptionally good resistance to uniform corrosion combined with higher strength and mechanical properties than the more common austenitic grades.

UNSAISIWerkstoffOutokumpuASTM
S31254904L1.4547254SMOA276
N089041.45396Mo (Moly)A479
EN10272B677
F44

With the average chromium content of 18% and nickel content of 8% austenitic stainless steels are sometimes referred to as 18/8 (although the actual chromium and nickel content can vary from these figures). Austenitic stainless steels are non magnetic and cannot be hardened by heat treatment, though they can strain harden rapidly when cold worked.

BS970AISIWerkstoffDINUNS
316S113101.4845X5CrNi18-10S31000
316S15316L1.4541X5CrNi 18-10S31008
310S243161.4571X8CrNiS18-9S32100
321S31316Ti1.4301X8CrNiS18-9S30400
304S313211.4305X2CrNi 19-11S30300
304S153041.4306X6CrNiTi 18-10S30403
303S21304L1.4307X12CrNi 25-21S30100
304S113031.4310X6CrNiMoTi 17-12-2S31600
EN58E3011.4539S31603
EN58AM1.4404S31635
EN58M
EN58E
EN58B

Heat treated martensitic stainless steel grades offer high strength and hardness. Martensitic grades can be heat treated due to having higher carbon content than other types of stainless steel. Martensitic grades are less ductile than other types of stainless steel. These grades are magnetic and are best suited for applications which require good corrosion resistance with good mechanical properties.

BS970AISIWerkstoffDINUNS
416S21440B1.4112X12CrS13S41000
410S21440C1.4125X12Cr13S42000
420S294201.4057X20Cr13S43100
420S374101.4005X30Cr13S44003
420S454161.4006X17CrNi16-2S44004
431S294311.4021X90CrMoV18
EN56AM1.4208X105CrMo17
EN56A
EN56C
EN56D
EN57

Duplex and Super Duplex stainless steel grades offer resistance to stress corrosion and crevice corrosion. They are higher strength grades than standard austenitic stainless steel specifications.

UNSASTMWerkstoff
S31083A1821.4462
S32760F511.4501
F55EN10083

Heat treatment is only suitable for specific grades of stainless. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each  component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of stainless steel grades.


Stainless steel is available with BS EN 10204 3.1 mill certificate, please request when placing any orders.


All our stainless steel grades are supplied in accordance with our ISO 9001 : 2008 registration.