牌号 | X8Ni9 |
1.5662 | |
对应标准 | NF EN 10269-1999
用于高温或低温条件下的紧固件用钢及镍合金 |
归类 | 合金钢 |
标签 | 淬火回火钢 |
Material designation | Heat treatment condition | Diameter d mm | Minimum fracture energy in shock bending (in J) (ISO-V specimens) at a temperature (in ℃) of: | ||||||||||||||||
Name | Number | -270 | -196 | -160 | -140 | -120 | -110 | -100 | -90 | -80 | -70 | -60 | -50 | -40 | -20 | 0 | +20 | ||
X18Ni9 | 1.5662 | +N+NT (or +QT) | d≤75 | - | 40 | 45 | 50 | 50 | - | 60 | - | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
+QT | d≤75 | - | 70 | - | - | 100 | - | 110 | - | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 |
Material designation | Heat treatment condition | Normalizing,quenching or solution annealing temperature °C | Type of cooling① | Tempering or precipitation treatment (and time) °C | |
Name | Number | ||||
X8Ni9 | 1.5662 | +N+NT | 880 to 930 + 770 to 830 | a | 540 to 600 |
+QT | 770 to 830 | w,o | 540 to 600 |
◎ 根据原件相关规定,如果允许矫直后消除应力,应选择消除应力的温度,以获得规定的性能。 | |||||
① a=air; o=oil; w=water |