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Description

UK B.S. BS 2S 137, 2S.143 Specialsteel Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 2S.143
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 2S.143 B.S. UK Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm)

Chemical composition(mass fraction)(wt.%) of the 2S.143

C Si Mn P S Cr Ni Mo Nb Cu
≤0.07 ≤0.60 ≤1.00 ≤0.035 ≤0.025 13.20 -14.70 5.00 -5.80 1.20 -2.00 0.10 -0.40 1.20 -2.00

Mechanical Properties of steel grade 2S.143

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
979 (≥) 634 (≥) 13 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 2S.143

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.21 -  
459 615 - 11.3 142   -  
328 - 22 21.2   312 344

Heat Treatment of steel grade 2S.143

Heat treated : 1788°C - 1158°C

Technological Curves of steel grade 2S.143

Relevant standard of 2S.143

BS 2S 137 Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm) BS-2S-137.pdf

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