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30Mn

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25Mn 35Mn
#30Mn

Description

China GBT 30Mn China structural steel and alloy steel and 30Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 30Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 30Mn GBT China China structural steel and alloy steel
55
60
65
70
75
80
85
15Mn
20Mn
25Mn

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.27-0.34 0.17-0.37 0.70-1.00 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade 30Mn

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)
995 (≥) 872 (≥) 14 14 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade 30Mn

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
41 - -     0.32 -  
585 877 - 33.3 121   -  
826 - 24 24.2   442 313

Heat Treatment of steel grade 30Mn

Heat treated : 1932°C - 1964°C

Technological Curves of steel grade 30Mn

Cross Reference Table (Equivalent Grade) of 30Mn

Grade Standard Country Application
30MnB5 UNE Spain Spain structural alloy steel
30Mn GBT China China structural steel and alloy steel
30Mn2 GBT China China structural steel and alloy steel
ML30Mn GBT China China structural steel and alloy steel
EN 30MnvS6 EN Euronorm Euronorm Structural steel
EN 30MnB5 EN Euronorm Euronorm Structural steel
ZG30Mn GBT China Large castings with low alloy cast steel
25Mn 35Mn
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