31 CrMo 12 (欧盟 / EN) 材料性能
其他名称:
材料组别:
黑色金属 / 结构钢
国家与地区/标准:
欧盟 / EN
数据更新
最新更新: 2021-10
更新总数: 3
更新历史:
2019-07
2016-04
机械性能
温度
物理性能
化学成分
化学元素
数值
单位
CAS 编号
化学元素
C
数值
0.28 – 0.35
单位
%
CAS 编号
7440-44-0
化学元素
Cr
数值
2.80 – 3.30
单位
%
CAS 编号
7440-47-3
化学元素
Mn
数值
0.40 – 0.70
单位
%
CAS 编号
7439-96-5
EN 10085: 2001 / 氮化钢 - 交货技术条件
热处理
- Soft annealing: 650-700°C; Hardening: 870-930°C (0,5 h minimum), oil or water cooling; Tempering: 580-700°C (1 h minimum); Nitriding: 480-570°C.
- The base composition and the heat treatment (quenching and tempering) prior to nitriding both have an influence on the results of nitriding treatment. The tempering temperature should not be less than 50°C higher than the nitriding temperature. A difference of less than 50°C should be the subject of a special agreement. <br /> Soft annealing at 650-700°C; <br /> Hardening at 870-930°C (time for austenitizing as a guide: 0.5h minimum) and quenching in oil or water; <br /> Tempering at 580-700°C (time for tempering as a guide: 1h minimum; With very large sizes, the tempering temperature may be agreed at the time of enquiry and order).;<br /> Nitriding at 490-570°C (time for nitriding depends on the desired depth of the nitrided case).