①以下厚度適用的最小延伸率:
0.5mm < t ≤ 0.7mm ,最小延伸率比表中值減少2%杠园;
0.35mm < t ≤ 0.5mm 顾瞪,最小延伸率比表中值減少4%;
t ≤ 0.35mm 抛蚁,最小延伸率比表中值減少7%
②最小塑性應(yīng)變比r90≥1.2③④⑤陈醒;應(yīng)變硬化指數(shù)n90≥0.15⑤;烘烤硬度指標(biāo)BH2≥30MPa
③對于鍍層AS瞧甩,AZ钉跷,ZF和ZM,最小延伸率減少2%湖弱,最小塑性應(yīng)變比r90減少0.2
④最小塑性應(yīng)變比r90適用的產(chǎn)品厚度如下:
1.5mm < t ≤ 2mm册榔,r90減少0.2
t ≥ 2mm,r90減少0.4
⑤
以下產(chǎn)品厚度適用的塑性應(yīng)變值r90
0.5mm < t ≤ 0.7mm祖修,r90減少0.2瘤薪;
0.35mm < t ≤ 0.5mm,r90減少0.4炊健;
t ≤ 0.35mm揽仔,r90減少0.6
以下產(chǎn)品厚度適用的應(yīng)變硬化指數(shù)n90
0.5mm < t ≤ 0.7mm,n90減少0.01凰茫;
0.35mm < t ≤ 0.5mm琅戏,n90減少0.03;
t ≤ 0.35mm必工,n90減少0.04