20MnB5 (欧州連合 / EN) 材料特性
その他の呼称:
材料グループ:
鉄合金 / 構造・建築鋼
国 / 規格:
欧州連合 / EN
データ更新
最新情報: 2021-12
更新の総数: 2
更新履歴:
2018-09
機械的特性
温度
物理的特性
成分
基準
値
単位
CAS 番号
基準
B
値
0.0008 – 0.0050
単位
%
CAS 番号
7440-42-8
基準
C
値
0.17 – 0.23
単位
%
CAS 番号
7440-44-0
基準
Mn
値
1.10 – 1.40
単位
%
CAS 番号
7439-96-5
EN 10083-3: 2006 / 焼入れ焼戻し用鋼－第3部：合金鋼用技術的受渡条件
熱処理
- Austenitizing (quenching in water): 880-920°C, (at least 30 min). NOTE: The temperatures at the lower end of the range are generally applicable to hardening in water and those at the upper end for hardening in oil. Synthetic quenchants may also be used; Tempering: 400-600°C, (at least 60 min); End quench test: 900±5°C.
- Hardening: 880-920°C (Temperatures at the lower end of the range are generally used for water, and those at the upper end for oil quenching; Time for austenitizing as a guide: at least 30 min.); <br> Quenching agent: Water (When choosing the quenching agent, the influence of other parameters, such as shape, dimensions and quenching temperature, on properties and crack susceptibility, should be taken into account. Other quenching agents such as synthetic quenchants may also be used.); <br> Tempering: 400-600°C (Time for tempering as a guide: at least 60 min.);<br> End quench test austenitizing: 900 ± 5°C (Time for austenitizing as a guide: 30-35 min.). The given conditions are for guidance. However, the temperatures specified for the end quench test are mandatory.