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Corrosion Resisting Alloy S143 / S144 / S145

 Data Sheet 

Chemical Composition Limits

Weight %

C

Si

Mn

P+S max

Cr

Ni

Mo

Others

2 S143 

2 S144 

2 S145

0.07 max 0.60 max 1.00 max

0.035P

0.025S

13.20/ 14.70 5.00/ 5.80 1.20/ 2.00 Cu 1.20/2.00

Nb 0.10/0.40

Stainless Cr-Ni-Cu-Mo

Corrosion resisting (Precipitation Hardening steel).

S143 930/1080 N/mm˛ Tensile

S144 1130/1330 N/mm˛ Tensile

S145 1270/1470 N/mm˛ Tensile

 

British Standard specifies characteristics of
chromium-nickel-copper-molybdenum corrosion
resisting steel supplied in the following forms, and as
parts, for general aerospace use:

a)

Forging stock and billets and bars for subsequent working: softened, designation S145A

b)

Forgings: solution treated, designation S145C

c)

Forgings: solution treated and precipitated, designation S145G

d)

Black bar for machining: solution treated, designation S145B

e)

Black bar for machining: solution treated and
precipitated, designation S145F;

f)

Bright bar for machining: solution treated,
designation S145D

g)

Bright bar for machining: solution treated and
precipitated, designation S145H


Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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Unit D, The Heights Business Park, Ibstone Road, Stokenchurch, 

Buckinghamshire, HP14 3BG, UK

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