按照ASTM B545 標準鍍錫，C 類，鍍層厚度是多少？

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請教：按照ASTM   B545  標準鍍錫，C 類，鍍層厚度是多少？

sjhuangjoanna

Spec. Thickness Comment
ASTM-B-
2 O0 G' K7 y8 ?+ j/ O6 l545-97e1   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 E$ u0 K( r, W7 V: A& uClass A .0001" min   
3 o5 s+ d1 `% r& Y# p% i: wClass B .0002" min   
Class C .00032" min .0004" min. for steel.
Class D .0006" min .0008" min. for steel.
# T. c" e5 n7 X$ h! r$ `4 GClass 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".
Type Matte   
Type Bright   
2 ~: B& v9 Y$ p, u. Y- v9 dType Flow-
brightened  ----------- Flow brightening available
最少0.00032 英寸，就是 8微米