| 牌号 | NiFe25Cr20NbTi |
| 2.4955 | |
| 对应标准 | NF EN 10090-1998
阀门用钢和合金 Valve steels and alloys for internal combustion engines |
| 归类 | 镍及镍合金 |
| 密度 | 8.1 g/cm3 |
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高温抗拉强度
Designation Reference heat
treatment
conditionTensile strength at:
N/mm2 ①Name Number 500°C 550°C 600°C 650°C 700°C 750°C 800°C NiFe25Cr20NbTi 2.4955 +AT+P 800 800 790 740 640 500 340 ① The values given here are situated near the lower limit of the scatter range. -
高温屈服强度
Designation Reference heat
treatment
condition0.2% proof strength at:
N/mm2 ①Name Number 500°C 550°C 600°C 650°C 700°C 750°C 800°C NiFe25Cr20NbTi 2.4955 +AT+P 450 450 450 450 430 380 250 ① The values given here are situated near the lower limit of the scatter range. -
蠕变强度
Designation Creep strength after 1000 h at:
N/mm2 ①Name Number 500°C 650°C 725°C 800°C NiFe25Cr20NbTi 2.4955 - 400 180 60 ① Mean values of scatter range determined until now. -
热处理指南
Designation Hot forming
℃Soft
annealing
℃Quenching or
solution heat
treatment
℃Quenching
agentTempering or
artificial ageing
℃Name Number NiFe25Cr20NbTi 2.4955 1150 to 1050 - 1000 to 1080 a or w 690 to 710/
16h a◎ a=air; o=oil; w=water -
物理性能
静态弹性模量 20°C与各温度间热膨胀系数 热导率 比热容 磁性 20°C 100°C 300°C 500°C 700°C 20°C 20°C 无 KN/mm2 10-6 K-1 W/m.K J/kg.K 215 14.1 15.5 15.9 16.8 13 460
注：数据仅供参考！如有疑问，请填写"我要纠错"！