牌號(hào) | NiFe25Cr20NbTi |
2.4955 | |
對(duì)應(yīng)標(biāo)準(zhǔn) | NF EN 10090-1998
閥門用鋼和合金 Valve steels and alloys for internal combustion engines |
歸類 | 鎳及鎳合金 |
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 |
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 | 無(wú) |
KN/mm2 | 10-6 K-1 | W/m.K | J/kg.K | ||||
215 | 14.1 | 15.5 | 15.9 | 16.8 | 13 | 460 |