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R 0550 / StSch 550

Germany DIN R0550/StSch550 Fine grain steel and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals R 0550 / StSch 550 -- Germany Fine grain steel

Chemical composition(mass fraction)(wt.%) of the R 0550 / StSch 550

Element Min Max Similar

Mechanical Properties of steel grade R 0550 / StSch 550

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)
146 (≥) 659 (≥) 23 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade R 0550 / StSch 550

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
31 - -     0.13 -  
781 766 - 22.3 234   -  
749 - 21 31.2   424 244

Heat Treatment of steel grade R 0550 / StSch 550

Heat treated : 1461°C - 1768°C

Technological Curves of steel grade R 0550 / StSch 550

Cross Reference Table (Equivalent Grade) of R 0550 / StSch 550

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