请各位大侠谈谈ar上下机匣的材质对可靠性的影响

PekingDeagle

NorSunShine33 发表于 2015-1-1 16:28
据说7075偏脆，6060比较抗冲击一些，这种说法有根据吗？

没有。厂家选6061的唯一目的是加工方便，成本低。

PekingDeagle

X-PGH 发表于 2015-1-1 17:21
6061 vs 7075 Aluminum: What’s the Difference

http://www.ar-15lowerreceivers.com/6061-vs-7075-alumi ...

that link got the machinability wrong. for indepth analysis you need to look up a more reliable source.

http://cdn.intechopen.com/pdfs-wm/13408.pdf