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发表于 2010-5-12 15:07:19
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Spec. Thickness Comment 7 @: D8 ]; O: `" J
ASTM-B-
8 E4 l) P. P+ `' X545-97e1 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".
8 ^0 L; ]0 ? }+ k& kClass A .0001" min & G$ e& c! H5 x# D) T6 f, \
Class B .0002" min
/ |: L3 }% I5 `& _Class C .00032" min .0004" min. for steel. 5 P! q6 ] U6 h" D
Class D .0006" min .0008" min. for steel. ! r, k* B2 g8 L4 q0 w( F' [8 w, g4 O" u
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". * _8 S. `% J' C o: l9 M: o
Type Matte
" d! s1 l" B( [0 ZType Bright ; ~* F1 h* T4 a* j
Type Flow-
j" A! P7 }) F8 Pbrightened ----------- Flow brightening available 8 I2 R, S+ q% [( V1 b d
最少0.00032 英寸，就是 8微米 |
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