ISO10113:2006 指定一個測定平坦金屬材料典型薄板和帶的塑性應變比的方法，通常被稱為 r 值，塑性應變比是受單軸拉伸應力試片的真實寬度應變對真實厚度應變的比值。
ISO 10113 測試通常與 ISO 10275 同時進行拉伸應變硬化指數。
*Bluehill 或 Bluehill 3
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