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Austenitic | Martensitic | Precipitation Hardening | Duplex | Super Duplex
stainless steel suppliers

Suppliers of stainless steel
bar, plasma cut plate,
sheet and tube.


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

stainless steel processing

PDF datasheet

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.

Hexagonal Tube Sheet Plate Flat Diameter

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 630
  • 1.4542
  • X5CrNiMoCuNb145PH
  • 1.4594

High Alloyed Austenitic Stainless

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

  • 1.4547
  • 254SMO
  • A276
  • N08904
  •  1.4539
  •  6Mo (Moly)
  • A479
  • EN10272
  • B677
  • F44

Austenitic Stainless

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.

  • 316S11
  • 1.4845
  • X5CrNi18-10
  •  S31000
  • 316S15
  • 1.4541
  • X5CrNi 18-10
  •  S31008
  • 310S24
  • 316
  • 1.4571
  • X8CrNiS18-9
  •  S32100
  • 321S31
  • 316Ti
  • 1.4301
  • X8CrNiS18-9
  •  S30400
  • 304S31
  • 321
  • 1.4305
  • X2CrNi 19-11
  •  S30300
  • 304S15
  • 304
  • 1.4306
  • X6CrNiTi 18-10
  •  S30403
  • 303S21
  • 304L
  • 1.4307
  • X12CrNi 25-21
  •  S30100
  • 304S11
  • 303
  • 1.4310
  • X6CrNiMoTi 17-12-2
  •  S31600
  • EN58E
  • 1.4539
  •  S31603
  • EN58AM
  • 1.4404
  •  S31635
  • EN58M
  • EN58E
  • EN58B

Martensitic Stainless

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.


  • 416S21
  • 1.4112
  • X12CrS13
  • S41000
  • 410S21
  • 1.4125
  • X12Cr13
  • S42000
  • 420S29
  • 1.4057
  • X20Cr13
  • S43100
  • 420S37
  • 1.4005
  • X30Cr13
  • S44003
  • 420S45
  • 1.4006
  • X17CrNi16-2
  • S44004
  • 431S29
  • 1.4021
  • X90CrMoV18
  • EN56AM
  • 1.4208
  • X105CrMo17
  • EN56A
  • EN56C
  • EN56D
  • EN57

Duplex & Super Duplex Stainless

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.

  • A182
  •  1.4462
  • F51
  • 1.4501
  • F55
  • EN10083

Heat Treatment

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.

Quality Assured Supply

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

West Yorkshire Steel Ltd Sandbeck Industrial Estate, Wetherby, Leeds. LS22 7DN UK
Telephone: 01937 584 440 Facsimile: 01937 580 128
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