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发表于 2010-5-12 15:07:19
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Spec. Thickness Comment
6 O8 j- o' n* |# G* ]ASTM-B-
* O, V5 k& ^! I# N9 W, L. Y, G5 q545-97e1 ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
6 o @6 u$ f: s2 ]- pClass A .0001" min 4 s% c+ \" x& p6 @ } Q, t" w- K! C8 @
Class B .0002" min 8 n2 e* S6 u4 h+ z: B+ }5 n
Class C .00032" min .0004" min. for steel.
& v" l+ n0 p' Y) j+ }3 S& BClass D .0006" min .0008" min. for steel. * F" [; \8 n- _' s
Class E .0012" min ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
3 r' q! f4 x; q: x- DType Matte
! B" S0 q# x. e' e; `Type Bright
+ P& N8 E% |/ t: W3 m) tType Flow-$ G3 F# E: _+ |; A8 \1 T/ k
brightened ----------- Flow brightening available 0 B Q# b$ `2 G& f# S1 [
最少0.00032 英寸，就是 8微米 |
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