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Description

UK B.S. BS S 159, S.159 Specialsteel Specification for 12% chromium-nickel-molybdenum-vanadium heat-resisting steel bars for the manufacture of fasteners (1100-1300 MPa: limiting ruling section 50 mm) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: S.159
Category Class Grade Standard Country Application
Steel GradesSpecialsteel S.159 B.S. UK Specification for 12% chromium-nickel-molybdenum-vanadium heat-resisting steel bars for the manufacture of fasteners (1100-1300 MPa: limiting ruling section 50 mm)

Chemical composition(mass fraction)(wt.%) of the S.159

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.159

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)
691 (≥) 435 (≥) 23 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade S.159

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
24 - -     0.44 -  
632 827 - 12.3 232   -  
739 - 34 22.2   422 342

Heat Treatment of steel grade S.159

Heat treated : 1698°C - 1545°C

Technological Curves of steel grade S.159

Relevant standard of S.159

BS S 159 Specification for 12% chromium-nickel-molybdenum-vanadium heat-resisting steel bars for the manufacture of fasteners (1100-1300 MPa: limiting ruling section 50 mm) BS-S-159.pdf

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