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31CrMoV9
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| Country of Origin︰ | China |
| Minimum Order︰ | 15 pc |
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- 31CRMOV9 is an alloyed structural steel. Chinese name 31CRMOV9 Density (kg/dm3) 7.73 Elastic modulus (MPa) 210 Forging temperature 1100℃-850℃. EN 10085 1.8519 DIN 17211 1.8519 Chemical composition Carbon :0.27~0.34 Silicon :≤0.40 Manganese :0.40~0.70 Sulfur :≤0.035 Phosphorus :≤0.025 Chromium :2.30~2.70 Molybdenum :0.15~0.25 Vanadium :0.10~0.20 Material parameter Delivery hardness: 245~255 HB. Forging temperature: 1100℃-850℃. Physical parameter Density (kg/dm3) : 7.73 Elastic modulus (MPa): 210 Resistance (Ω mm2/m) at 20 ° C :0.19 Thermal conductivity at 20℃ (W/ K) :43.0 20℃ heat capacity (J/kg K) :441 Coefficient of thermal expansion under annealing conditions :(1/1000000) 20-100 ° C 11.5 20-200 ° C 12.5 20-300 ° C 13.3 20-400 ° C 13.9 Mechanical property Diameter (mm) ≥ 16 ≤ 40 > 40 ≤ 100 > 100 ≤ 160 > 160 ≤ 250 Yield strength (MPa) 900 800 seven hundred 650 Tensile strength (MPa) 1100-1300. 1000-1200.
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