China GBT GB 70 China structural steel and alloy steel and GB 70 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Structure Steel | GB 70 | GBT | China | China structural steel and alloy steel |
ML20MnA |
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ML30CrMnSiA |
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ML16CrSiNi |
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ML20CrMoA |
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ML30CrMoA |
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ML35CrMoA |
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ML42CrMoA |
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ML38CrA |
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ML40CrMoA |
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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) |
---|---|---|---|---|---|---|
569 (≥) | 385 (≥) | 31 | 22 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 |
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 |
---|---|---|---|---|---|---|---|
31 | - | - | 0.44 | - | |||
625 | 461 | - | 34.3 | 214 | - | ||
934 | - | 12 | 34.2 | 112 | 131 |
Heat treated : 1485°C - 1219°C
Grade | Standard | Country | Application |
---|---|---|---|
UNS G10170 | UNS | USA | General use carbon steel bar |
HAP 70 | AISI | USA | Powder metallurgy high-speed tool steel |
C70W1 | Germany | Carbon tool steel | |
C70W2 | DIN | Germany | Carbon tool steel |
1.2703 | DIN | Germany | Cold working alloy tool steel |
1.2709 | DIN | Germany | Cold working alloy tool steel |
70Si7 | DIN | Germany | Cold working alloy tool steel |
SK70 | JIS | Japan | Carbon tool steel |
TC70 | JIS | Japan | Carbon tool steel |
SS14:1770 | SS | Sweden | Carbide for cutting tools |
SS14:1770 | SS | Sweden | Carbide for cutting tools |
SS14:— | SS | Sweden | Carbide for cutting tools |
SS14:— | SS | Sweden | Carbide for cutting tools |
SS14:2700 | SS | Sweden | Carbide for cutting tools |
SS14:2700 | SS | Sweden | Carbide for cutting tools |
S14:2705 | SS | Sweden | Carbide for cutting tools |
C70U | ISO | ISO | Carbide for cutting tools |
C70U | ISO | ISO | Carbide for cutting tools |
UNS S15700 | UNS | USA | precipitation hardening |
UNS S15700 | UNS | USA | precipitation hardening |
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