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UK B.S. BS 1554, 434S20 Specialsteel Specification for stainless and heat-resisting steel round wire and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 434S20
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 434S20 B.S. UK Specification for stainless and heat-resisting steel round wire

Chemical composition(mass fraction)(wt.%) of the 434S20

C Si Mn P S Cr Mo Ni
≤0.12 ≤1.00 ≤1.00 ≤0.04 ≤0.03 16.00 -18.00 0.75 -1.25 ≤ ≥

Mechanical Properties of steel grade 434S20

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)
577 (≥) 446 (≥) 41 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade 434S20

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
33 - -     0.41 -  
717 789 - 23.3 214   -  
929 - 13 31.2   343 133

Heat Treatment of steel grade 434S20

Heat treated : 1586°C - 1137°C

Technological Curves of steel grade 434S20

Cross Reference Table (Equivalent Grade) of 434S20

Grade Standard Country Application
434S20
434S20

Relevant standard of 434S20

BS 1554 Specification for stainless and heat-resisting steel round wire BS-1554.pdf

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