20MoCrS4 (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: 2025-02
更新总数: 4
更新历史:
2020-05
2018-10
2018-01
机械性能
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
0.17 – 0.23
单位
%
CAS 编号
7440-44-0
化学元素
Cr
数值
0.30 – 0.60
单位
%
CAS 编号
7440-47-3
化学元素
Mn
数值
0.70 – 1.00
单位
%
CAS 编号
7439-96-5
EN 10084: 2008 / 表面硬化钢 - 交货技术条件
热处理
- End quench test austenitizing at 910 ± 5°C (Time for austenitizing as a guide: 30 min minimum);<br><br>Carburizing at 880-980°C (The carburizing temperature depends on the chemical composition of the steel, the mass of the product and the carburizing medium. If the steels are direct hardened, in general, a temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1020-1050°C) are not unusual);<br><br>Direct and simple hardening at 820-860°C (The kind of quenching agent depends on, for example the shape of the products, the cooling conditions and the amount of furnace filling. If the steels are direct hardened and if there is a danger of distortion, they should be quenched from a temperature between the core-hardening and case-hardening temperatures);<br><br>Double hardening: Core-hardening at 860-900°C and Case-hardening at 780-820°C;<br><br>Tempering at 150-200°C (Time for tempering as a guide: 1h minimum).
- End quench test: Quench from 910°C Carburizing: 880 to 980°C; NOTE: If steels are direct hardened, in general, a carburizing temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1020 to 1050°C) are not unusual. Core hardening: 860 to 900°C; Case hardening: 780 to 820°C; Tempering: 150 to 200°C (as a guide, for 1 hour minimum).