①以下厚度適用的最小延伸率:
0.5mm < t ≤ 0.7mm 瓣赂,最小延伸率比表中值減少2%;
0.35mm < t ≤ 0.5mm 片拍,最小延伸率比表中值減少4%煌集;
t ≤ 0.35mm ,最小延伸率比表中值減少7%
②塑性應(yīng)變比r90≥2.1:
1.5mm < t ≤ 2mm捌省,r90減少0.2
t ≥ 2mm苫纤,r90減少0.4
③應(yīng)變硬化指數(shù)n90≥0.22
④塑性應(yīng)變比r90≥1.9:
1.5mm < t ≤ 2mm,r90減少0.2
t ≥ 2mm纲缓,r90減少0.4
⑤塑性應(yīng)變值r90≥1.9
以下產(chǎn)品厚度適用的塑性應(yīng)變值r90
0.5mm < t ≤ 0.7mm卷拘,r90減少0.2;
0.35mm < t ≤ 0.5mm祝高,r90減少0.4栗弟;
t ≤ 0.35mm,r90減少0.6
應(yīng)變硬化指數(shù)n90≥0.21:
以下產(chǎn)品厚度適用的應(yīng)變硬化指數(shù)n90
0.5mm < t ≤ 0.7mm工闺,n90減少0.01乍赫;
0.35mm < t ≤ 0.5mm,n90減少0.03尾烛;
t ≤ 0.35mm灰深,n90減少0.04