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420级别确实是好材料,但是加工需要的工艺和工具美国不少枪匠没有,所以他们不喜欢这个牌子的管子
随便搜了一下差距,420的硬度和rm都超过了退火416:
-The 416, supplied in annealed condition, is about:
C= 0,12%
Cr= 12%
Brinell Hardness : 170-175
Rm: 630-650MPa
Modulus of Elasticity: 200Gpa
-While the 420 used by Lothar Walther is:
C= 0,20%
Cr= 13%
Brinell Hardness 205
Rm: 725Mpa
Modulus of Elasticity: 200GPa.
The Walther 420 is supplied by Boehler-Udderlohn from Austira under Walther’s specifications.
Noveske那个就是是挤压多边形膛线,但是Lothar Walther能做420规格不锈钢的挤压渐进多边形膛线,这个美国我没听说过有人能做。 |
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