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Description

UK B.S. BS S 531, S.531 Specialsteel Specification for 24/17 chromium-nickel heat-resisting steel sheet and strip (niobium stabilized: 54 hbar) (elevated temperature properties not verified) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S.531
Category Class Grade Standard Country Application
Steel GradesSpecialsteel S.531 B.S. UK Specification for 24/17 chromium-nickel heat-resisting steel sheet and strip (niobium stabilized: 54 hbar) (elevated temperature properties not verified)

Chemical composition(mass fraction)(wt.%) of the S.531

C Si Mn P S Cr Ni Mo Nb
≤0.12 0.20 -1.00 0.50 -2.00 ≤0.035 ≤0.025 23.00 -26.00 16.00 -19.00 ≤ ≥ 10×C -1.40

Mechanical Properties of steel grade S.531

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)
495 (≥) 135 (≥) 12 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade S.531

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
44 - -     0.21 -  
526 783 - 12.3 244   -  
697 - 31 43.2   114 442

Heat Treatment of steel grade S.531

Heat treated : 1968°C - 1155°C

Technological Curves of steel grade S.531

Relevant standard of S.531

BS S 531 Specification for 24/17 chromium-nickel heat-resisting steel sheet and strip (niobium stabilized: 54 hbar) (elevated temperature properties not verified) BS-S-531.pdf

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