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Description

UK B.S. BS S 151, S.151 Specialsteel Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel billets, bars, forgings and parts (930-1130 MPa: limiting ruling section 150 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S.151
Category Class Grade Standard Country Application
Steel GradesSpecialsteel S.151 B.S. UK Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel billets, bars, forgings and parts (930-1130 MPa: limiting ruling section 150 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3)

Chemical composition(mass fraction)(wt.%) of the S.151

C Si Mn P S Cr Ni Mo Nb/Ti V N
0.08 -0.13 ≤0.35 0.50 -0.90 ≤0.030 ≤0.025 11.00 -12.50 2.00 -3.00 1.50 -2.00 ≤ ≥ 0.25 -0.40 0.020 -0.040

Mechanical Properties of steel grade S.151

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)
869 (≥) 439 (≥) 34 13 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade S.151

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
34 - -     0.22 -  
479 915 - 42.3 431   -  
472 - 23 21.2   134 134

Heat Treatment of steel grade S.151

Heat treated : 1248°C - 1575°C

Technological Curves of steel grade S.151

Relevant standard of S.151

BS S 151 Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel billets, bars, forgings and parts (930-1130 MPa: limiting ruling section 150 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3) BS-S-151.pdf

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