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EU EN S550A 在淬火和回火或沉淀硬化条件制成的钢板和宽扁钢的高屈服强度结构钢 - 第3部分:沉淀硬化钢的运输条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S550A / S 550 A
Category Grade Standard Region/Area Standard Content
Metals S 550 A EN 10137-3 EU 在淬火和回火或沉淀硬化条件制成的钢板和宽扁钢的高屈服强度结构钢 - 第3部分:沉淀硬化钢的运输条件

Chemical composition(mass fraction)(wt.%) of the S 550 A

Element Min Max Similar
V - 0.1000 -
Ti - 0.1000 -
Si - 0.5000 -
S - 0.0150 -
P - 0.0250 -
Ni - 2.0000 -
Nb - 0.0600 -
N - 0.0150 -
Mo - 0.5000 -
Mn 0.3000 1.8000 -
Cu - 2.0000 -
Cr - 0.3000 -
C 0.0300 0.1200 -
Al - 0.0800 -

Mechanical Properties of steel grade S 550 A

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)
175 (≥) 971 (≥) 41 42 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade S 550 A

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 - -     0.21 -  
526 667 - 24.3 221   -  
878 - 23 13.2   334 442

Heat Treatment of steel grade S 550 A

Heat treated : 1274°C - 1691°C

Technological Curves of steel grade S 550 A

Cross Reference Table (Equivalent Grade) of S 550 A

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