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416 Stainless Steel

PDF datasheet

416 stainless steel stockholders and suppliers, delivering to the whole of the UK. West Yorkshire Steel are suppliers of 416 stainless steel round bar. 416 is a martensitic free machining stainless grade providing excellent machinability with reasonable strength and corrosion resistance. The higher sulphur content improves the machining and non-galling characteristics. 416 stainless steel is commonly supplied in the hardened and tempered but still machineable condition.


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


Related Specifications
1.4005 ASTM AISI BS970 416S21 UNS S41600 KE40A SUS

Carbon 0.09-0.15% Chromium 11.50-13.50%
Manganese 1.50% max Nickel 1.00% max
Silicon 1.00% max Phosphorous  0.06% max
Molybdenum 0.60% max Sulphur 0.15-0.35%

Form of Supply

West Yorkshire Steel are suppliers and stockholders of round bar in grade 416 stainless. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Precision ground stainless steel bar can be supplied, providing a high quality ground bar to tight tolerances



Suitable for applications that require good strength, toughness and reasonable corrosion characteristics that are not too severe. It is suitable for components such as valves, screws, bolts, pumps and rods. 416 is widely used for general engineering and popular in the food and automotive industries.

Corrosion Resistance

With its higher sulphur content 416 stainless steel has lower corrosion resistance to that of 410 stainless and all other 400 series stainless steel grades. It provides optimum corrosion resistance in the hardened and tempered condition. Allowing oxygen to circulate freely on the surface 416 stainless steel will form an oxide film which protects the surface. Keeping the surface free of scale and foreign particles improves corrosion resistance, finished components should be passivated.


Pre heat carefully, then raise temperature to 1150-1200°C, hold until temperature is uniform through the steel. Do not forge below 900°C. After forging 416 stainless cool slowly in furnace or warm ashes.


Heat the 416 stainless steel slowly to 820-900°C, hold until temperature is uniform through the steel. Soak well and allow to cool in the furnace.


Heat the 416 slowly to 950-1020°C and hold until the temperature is uniform throughout the steel. After adequate soaking quench in oil or allow to air cool. Temper as soon as the tool is hand warm.

Typical Mechanical Properties

P 550-700 340 15 34 152-207


Stainless steel 416 (416S21) grade is available with BS EN 10204 3.1 mill certificate, please request when placing any orders.

Quality Assured Supply

416 stainless steel is supplied in accordance with our ISO 9001 : 2008 registration.

Contact West Yorkshire Steel with your enquiries for round bar in grade 416 stainless steel.

West Yorkshire Steel Ltd Sandbeck Industrial Estate, Wetherby, Leeds. LS22 7DN UK
Telephone: 01937 584 440 Facsimile: 01937 580 128
© Copyright 2000-2012 West Yorkshire Steel Limited. All rights reserved. Terms and Conditions
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