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Poland PN 30HMA Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 30HMA / 30 HMA
Category Grade Standard Region/Area Standard Content
Metals 30 HMA PN H84030-04 Poland Structural alloy steel -- Steel for heat treatment (quenching + tempering) and surface hardening-Grades

Chemical composition(mass fraction)(wt.%) of the 30 HMA

Element Min Max Similar

Mechanical Properties of steel grade 30 HMA

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)
968 (≥) 851 (≥) 13 33 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade 30 HMA

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
32 - -     0.11 -  
991 313 - 11.3 141   -  
171 - 42 24.2   441 443

Heat Treatment of steel grade 30 HMA

Heat treated : 1421°C - 1897°C

Technological Curves of steel grade 30 HMA

Cross Reference Table (Equivalent Grade) of 30 HMA

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