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GB 65

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ML40CrMoA GB 70
#65

Description

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

Datasheet for: Steel Grades:Structure Steel: GB 65
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel GB 65 GBT China China structural steel and alloy steel
ML45
ML20MnA
ML30CrMnSiA
ML16CrSiNi
ML20CrMoA
ML30CrMoA
ML35CrMoA
ML42CrMoA
ML38CrA
ML40CrMoA

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.62-0.70 0.17-0.37 0.50-0.80 0.035 0.035 Max 0.25 Max 0.25

Mechanical Properties of steel grade GB 65

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)
391 (≥) 412 (≥) 34 11 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade GB 65

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 - -     0.24 -  
525 437 - 44.3 312   -  
645 - 42 14.2   413 423

Heat Treatment of steel grade GB 65

Heat treated : 1664°C - 1745°C

Technological Curves of steel grade GB 65

Cross Reference Table (Equivalent Grade) of GB 65

Grade Standard Country Application
X165CrV12 DIN Germany Cold working alloy tool steel
X165CrMoV12 DIN Germany Cold working alloy tool steel
X165CrCoMo12 DIN Germany Cold working alloy tool steel
65MnCrMo4 DIN Germany Hot working alloy tool steel
1.2365 DIN Germany Hot working alloy tool steel
1.3265 DIN Germany High-speed tool steel
SK65 JIS Japan Carbon tool steel
AISI 650 AISI USA precipitation hardening
AISI 652 AISI USA precipitation hardening
AISI 653 AISI USA precipitation hardening
AISI 665 AISI USA precipitation hardening
UNS S66545 UNS USA precipitation hardening
UNS S65007 UNS USA precipitation hardening
UNS S65006 UNS USA precipitation hardening
W-Nr 1.4565 DIN Germany Stainless steel
65Si7 DIN Germany Valve steel
UNS J94650 AISI USA
UNS J94651 AISI USA
UNS J94651 AISI USA
UNS J42065 AISI USA
ML40CrMoA GB 70
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

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