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GB 85

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GB 70 65Mn
#85

Description

China GBT GB 85 China structural steel and alloy steel and GB 85 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: GB 85
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel GB 85 GBT China China structural steel and alloy steel
ML30CrMnSiA
ML16CrSiNi
ML20CrMoA
ML30CrMoA
ML35CrMoA
ML42CrMoA
ML38CrA
ML40CrMoA
GB 65
GB 70

Chemical composition(mass fraction)(wt.%) of the GB 85

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.82-0.90 0.17-0.37 0.50-0.80 0.035 0.035 Max 0.25 Max 0.25

Mechanical Properties of steel grade GB 85

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)
982 (≥) 992 (≥) 13 22 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade GB 85

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
14 - -     0.41 -  
151 285 - 34.3 321   -  
128 - 42 33.2   333 211

Heat Treatment of steel grade GB 85

Heat treated : 1378°C - 1877°C

Technological Curves of steel grade GB 85

Cross Reference Table (Equivalent Grade) of GB 85

Grade Standard Country Application
C85W DIN Germany Carbon tool steel
85Cr1 DIN Germany Cold working alloy tool steel
1.2085 DIN Germany Cold working alloy tool steel
1.2885 DIN Germany Hot working alloy tool steel
SK85 JIS Japan Carbon tool steel
Z85WDKCV06-05-05-04-02 AFNOR France Carbide for cutting tools
Z85WDKCV06-05-05-04-02 AFNOR France Carbide for cutting tools
SS14:1885 SS Sweden Carbide for cutting tools
SS14:1885 SS Sweden Carbide for cutting tools
CT85 SS Sweden Carbide for cutting tools
CT85 SS Sweden Carbide for cutting tools
AISI 685 AISI USA precipitation hardening
1.4885 DIN Germany Stainless steel
X85CrMoV18-2 DIN Germany Valve steel
1.4785 DIN Germany Valve steel
Z85CDV18-02 AFNOR France Steel Exhaust Valves
X85CrMoV18-2 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
SS14 2385 SS Sweden
SS14 2385 SS Sweden
ASTM Grade 485-250(70-35) ASTM USA
GB 70 65Mn
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