铜及铜合金带弯曲试验标准对比研究

Comparative Study on Bend Test Standards for Copper and Copper Alloy Strip

为了提高电子元件材料可靠性和我国铜合金带行业的国际竞争力,对比分析了美国标准(ASTM)和中国国家标准(GB)关于铜及铜合金带弯曲试验的主要差异。在铜及铜合金带弯曲试验标准体系上,美国标准(ASTM)优于中国国家标准(GB)。目前,我国铜及铜合金带标准GB/T2059-2008和YS/T 1041-2015都引用了适用于所有金属材料、所有厚度的GB/T232《金属材料弯曲试验方法》作为弯曲试验标准,没有引用GB/T 15825.5《金属薄板成形性能与试验方法 -第5部分:弯曲试验》。在铜及铜合金带弯曲性能测试严苛性和适用性上,GB/T15825.5-2008比GB/T232-2010严格及适用,ASTM B820-14a比GB/T15825.5-2008更严格、更适用。为了提升我国铜合金带标准水平,中国国家标准(GB)组织应该尽快制定专用铜及铜合金带弯曲试验标准,或尽快更新铜及铜合金带弯曲试验标准体系。

In order to improve reliability of electronic components and material ＆ increase competitiveness of Chinese copper alloy strip industry in the world, the main difference between ASTM and GB about bend test for copper ＆ copper alloy strip were compared and analyzed. On standard system for bend test for copper ＆ copper alloy strip, ASTM is better than GB. At present, Chinese standards of copper ＆ copper alloy strip GB/T＇2059-2008 ＆ YS/T 1041-2015 adopted GB/T232 （Metallic materials-Bend test） for whole thickness ＆ whole metallic materials, did not adopt GB/T 15825.5 （Sheet metal formability and test methods-Part5 ： Bending test） . On stringency ＆ applicability of bend test for copper ＆ copper alloy strip, GB/T15825.5-2008 is better than GB/T232-2010, and ASTM B820-14a is better than GB/T15825.5-2008. In order to improve the standard level of copper and copper alloy strip, Chinese GB group should make a special standard for bend test for copper ＆ copper alloy strip or update standard system for bend test for copper ＆ copper alloy strip as soon as possible.