牌號 | X40CrSiMo10-2 |
1.4731 | |
對應(yīng)標準 | NF EN 10090-1998
閥門用鋼和合金 Valve steels and alloys for internal combustion engines |
歸類 | 馬氏體不銹鋼 |
密度 | 7.7 g/cm3 |
Designation | Reference heat treatment condition | Tensile strength at: N/mm2 ① | |||||||
Name | Number | 500°C | 550°C | 600°C | 650°C | 700°C | 750°C | 800°C | |
X40CrSiMo10-2 | 1.4731 | +QT | 550 | 420 | 300 | 220 | 130 ② | - | - |
① The values given here are situated near the lower limit of the scatter range. ② This grade should not be used at 700°C and above. |
Designation | Reference heat treatment condition | 0.2% proof strength at: N/mm2 ① | |||||||
Name | Number | 500°C | 550°C | 600°C | 650°C | 700°C | 750°C | 800°C | |
X40CrSiMo10-2 | 1.4731 | +QT | 450 | 350 | 260 | 180 | 100 ② | - | - |
① The values given here are situated near the lower limit of the scatter range. ② This grade should not be used at 700°C and above. |
Designation | Creep strength after 1000 h at: N/mm2 ① | ||||
Name | Number | 500°C | 650°C | 725°C | 800°C |
X40CrSiMo10-2 | 1.4731 | 210 | 40 | - | - |
① Mean values of scatter range determined until now. |
Designation | Hot forming ℃ | Soft annealing ℃ | Quenching or solution heat treatment ℃ | Quenching agent | Tempering or artificial ageing ℃ | |
Name | Number | |||||
X40CrSiMo10-2 | 1.4731 | 1100 to 900 | 780 to 820 a or w | 1000 to 1050 | o | 720 to 820/ a or w |
◎ a=air; o=oil; w=water |
靜態(tài)彈性模量 | 20°C與各溫度間熱膨脹系數(shù) | 熱導(dǎo)率 | 比熱容 | 磁性 | |||
20°C | 100°C | 300°C | 500°C | 700°C | 20°C | 20°C | 有 |
KN/mm2 | 10-6 K-1 | W/m.K | J/kg.K | ||||
210 | 10.9 | 11.2 | 11.5 | 11.8 | 21 | 500 |