what's mean "surface hardening group 5"?

wqz198 · 发表于 2009-8-10 17:58:33

	product specfication PDQB 2102
	material 40Cr class BB
	alternative material M800L class -
	surface hardening group 5

How to understand surface hardening group 5? It is included a product specification.See above(part)
thanks very much!

wqz198 · 发表于 2009-8-10 18:08:28

PRODUCT SPECIFICATION PDQB 2102

MATERIAL 40Cr CLASS BB

ALTERNATIVE MATERIAL M800L CLASS -

SURFACE HARDENING GROUP 5

hlqhlq · 发表于 2009-8-11 08:27:03

I guess there are some surface hardening groups in other specification and you may find group 5.

wty728 · 发表于 2009-8-11 10:29:33

maybe it means the place 5 need to surface hardening，like partial harden

slfly · 发表于 2009-8-11 11:27:45

I think,if you want to know the meaning "surface hardening group 5",you need to read the original text of "PDQB 2102".

tom2005 · 发表于 2009-8-22 09:23:05

I consider it is only state situation of surface hardness, but you can find it from specification.

wangzhaoyan · 发表于 2009-9-5 14:13:41

I think 5# is right."sureface harding group 5 "in the specification of PDQB 2102.

fendou · 发表于 2009-9-7 09:02:49

we don't have any specification.so we all don't know.Please check up your specification.

liangdeyu · 发表于 2009-9-7 10:16:43

maybe can find in the specification

		自动登录	找回密码
密码			免费注册

[Help] what's mean "surface hardening group 5"?