AM355 (米国 / MIL) 材料特性
材料グループ:
鉄合金 / ステンレス鋼
国 / 規格:
米国 / MIL
データ更新
最新情報: 2014-10
更新の総数: 1
更新履歴:
機械的特性
物理的特性
成分
基準
値
単位
CAS 番号
基準
C
値
0.1000 – 0.1500
単位
%
CAS 番号
7440-44-0
基準
Cr
値
15.0000 – 16.0000
単位
%
CAS 番号
7440-47-3
基準
Mn
値
0.5000 – 1.2500
単位
%
CAS 番号
7439-96-5
MIL-S-8840B: 1965 / Steel sheet and strip, corrosion-resistant, precipitation hardening (AM350 and AM355), premium quality
熱処理
- Cold rolled and tempered condition obtained by tempering at 454°C to 510°C subsequent to final cold rolling; Heat treated: Heating to 932°+/-4°C, held at heat for not less than 45 min. per 25.4 mm of thickness, quenched in water or otherwise quenched very rapidly to room temperature, cooled to -73°C or lower, held at this temperature for not less than 3 hours, warmed to room temperature, heated to either 538°C or 454°+/-12°C, held at temperature for not less than 3 hours nor more than 4 hours, and air cooled to room temperature.
- Solution treatment at 1900°F. Hold 90 minutes minimum for forgings, bars, plates. Quench in water, oil or polymer; Austenitized (T): at 1710°F and hold 15 minutes per inch of thickness and quench in air. Transformation treatment at 1400°F, min. hold 180 min. (cool to below 60°F); Austenitized (SCT): at 1800°F, hold 120 min. and quench in air. Transformation treatment at -100°F, min. hold 180 min. (for castings only); For wrought products only: Austenitized (SCT) at 1710°F, hold 10 minutes plus 1 minute for each 0.01 inch thickness and quench in water or oil. Transformation treatment at -100°F, min. immediately after water quenching, after austenite conditioning. Minimum hold 180 min.