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UK B.S. BS 1449-2, BS 1501-3, BS 6258, BS 970-1, BS 970-3, 320S31 Specialsteel Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 320S31
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 320S31 B.S. UK Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes

Chemical composition(mass fraction)(wt.%) of the 320S31

C Si Mn P S Cr Mo Ni Ti
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.50 -18.50 2.00 -2.50 11.00 -14.00 5×C -0.80

Mechanical Properties of steel grade 320S31

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)
861 (≥) 978 (≥) 12 44 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade 320S31

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 - -     0.43 -  
987 587 - 33.3 433   -  
973 - 23 43.2   124 243

Heat Treatment of steel grade 320S31

Heat treated : 1556°C - 1475°C

Technological Curves of steel grade 320S31

Cross Reference Table (Equivalent Grade) of 320S31

Grade Standard Country Application
320S31
320S31
320S31
320S31
320S33
320S33

Relevant standard of 320S31

BS 1449-2 Steel plate, sheet and strip. Specification for stainless and heat-resisting steel plate, sheet and strip BS-1449-2.pdf
BS 1501-3 Steels for pressure purposes. Specification for corrosion- and heat-resisting steels: plates, sheet and strip BS-1501-3.pdf
BS 6258 Specification for hollow steel bars for machining BS-6258.pdf
BS 970-1 Specification for wrought steels for mechanical and allied engineering purposes. General inspection and testing procedures and specific requirements for carbon, carbon manganese, alloy and stainless steels BS-970-1.pdf
BS 970-3 Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes BS-970-3.pdf

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