牌號 | X53CrMnNiN21-9 |
1.4871 | |
對應標準 | NF EN 10090-1998
閥門用鋼和合金 Valve steels and alloys for internal combustion engines |
歸類 | 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 | |
X53CrMnNiN21-9 | 1.4871 | +AT+P | 650 | 600 | 550 | 500 | 450 | 370 | 300 |
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 | |
X53CrMnNiN21-9 | 1.4871 | +AT+P | 350 | 330 | 300 | 270 | 250 | 230 | 200 |
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 |
X53CrMnNiN21-9 | 1.4871 | - | 200 | 110 | 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 | |||||
X53CrMnNiN21-9 | 1.4871 | 1150 to 950 | - | 1140 to 1180 | w | 760 to 815/ 4h to 8h 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) | 熱導率 | 比熱容 | 磁性 | |||
20°C | 100°C | 300°C | 500°C | 700°C | 20°C | 20°C | 無 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 奧氏體鋼在時效條件下可能會有輕微的磁化。它們的磁化率可以隨著冷成形時間的延長而提高运准。 |