牌號(hào) | X53CrMnNiNbN21-9 |
1.4870 | |
對(duì)應(yīng)標(biāo)準(zhǔn) | NF EN 10090-1998
閥門(mén)用鋼和合金 Valve steels and alloys for internal combustion engines |
歸類(lèi) | 奧氏體不銹鋼 |
密度 | 7.8 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 | |
X53CrMnNiNbN21-9 | 1.4870 | +AT+P | 680 | 650 | 600 | 510 | 450 | 380 | 320 |
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 | |
X53CrMnNiNbN21-9 | 1.4870 | +AT+P | 340 | 320 | 310 | 280 | 260 | 235 | 220 |
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 |
X53CrMnNiNbN21-9 | 1.4870 | - | 215 | 115 | 50 |
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 | |||||
X53CrMnNiNbN21-9 | 1.4870 | 1150 to 980 | - | 1160 to 1200 | w | 760 to 850/ 6h 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) ① |
KN/mm2 | 10-6 K-1 | W/m.K | J/kg.K | ||||
205 | 15.5 | 17.5 | 18.5 | 18.8 | 14.5 | 500 |
① 奧氏體鋼在時(shí)效條件下可能會(huì)有輕微的磁化砍鸠。它們的磁化率可以隨著冷成形時(shí)間的延長(zhǎng)而提高。 |