宝山钢铁股份有限公司（简称“宝钢股份”）是中国最大、最现代化的钢铁联合企业。宝钢股份以其诚信、人才、创新、管理、技术诸方面综合...
| 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 |
| 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 | |
| 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. |
| 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 | |
| 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. |
| Designation | Creep strength after 1000 h at: N/mm2 ① | ||||
| Name | Number | 500°C | 650°C | 725°C | 800°C |
| NiFe25Cr20NbTi | 2.4955 | - | 400 | 180 | 60 |
| 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 | |||||
| NiFe25Cr20NbTi | 2.4955 | 1150 to 1050 | - | 1000 to 1080 | a or w | 690 to 710/ 16h a |
| ◎ a=air; o=oil; w=water |
| 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 | |
宝山钢铁股份有限公司（简称“宝钢股份”）是中国最大、最现代化的钢铁联合企业。宝钢股份以其诚信、人才、创新、管理、技术诸方面综合...
