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65Mn

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GB 85 55Si2Mn
#65Mn

Description

China GBT 65Mn China structural steel and alloy steel and 65Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 65Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 65Mn GBT China China structural steel and alloy steel
ML16CrSiNi
ML20CrMoA
ML30CrMoA
ML35CrMoA
ML42CrMoA
ML38CrA
ML40CrMoA
GB 65
GB 70
GB 85

Chemical composition(mass fraction)(wt.%) of the 65Mn

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.62-0.70 0.17-0.37 0.90-1.20 0.035 0.035 Max 0.25 Max 0.25

Mechanical Properties of steel grade 65Mn

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)
189 (≥) 696 (≥) 33 34 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade 65Mn

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 - -     0.14 -  
654 642 - 12.3 223   -  
374 - 32 31.2   341 114

Heat Treatment of steel grade 65Mn

Heat treated : 1892°C - 1164°C

Technological Curves of steel grade 65Mn

Cross Reference Table (Equivalent Grade) of 65Mn

Grade Standard Country Application
65MnCrMo4 DIN Germany Hot working alloy tool steel
65Mn10 STAS/SR Romania Structural steel
65Mn GBT China China structural steel and alloy steel
65Mn GBT China China structural steel and alloy steel
ZG65Mn GBT China Large castings with low alloy cast steel
GB 85 55Si2Mn
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