標(biāo)題: 按照ASTM B545 標(biāo)準(zhǔn)鍍錫,，C 類，鍍層厚度是多少,？ [打印本頁] 作者: 105633469 時間: 2010-4-21 13:17 標(biāo)題: 按照ASTM B545 標(biāo)準(zhǔn)鍍錫,，C 類，鍍層厚度是多少,？ 請教：按照ASTM B545 標(biāo)準(zhǔn)鍍錫,，C 類，鍍層厚度是多少,？作者: sjhuangjoanna 時間: 2010-5-12 15:07
Spec. Thickness Comment ' H5 x. ~- U) Y1 h* Y0 v9 W7 Q, w
ASTM-B- - Y, ?$ o' Q j* k$ b6 f+ Y545-97e1 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". * ]4 `# ~/ v- d( H0 q: W) ^
Class A .0001" min 6 \( H4 I+ S" c; B( w) e
Class B .0002" min 9 q0 S1 D" f* z4 k: b7 l5 C9 j
Class C .00032" min .0004" min. for steel. 6 B: }; q! e: B# |2 XClass D .0006" min .0008" min. for steel. : f" ?* U! I, \2 zClass 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". 9 q* X# L* U& Z& z% UType Matte 9 k! i- I' n% g L9 f& ]
Type Bright 2 `' r# c# K- j; j0 N6 O& f) \5 y
Type Flow- ; K( r! p* T, h. a7 o tbrightened ----------- Flow brightening available & `! s7 u. y# h: N3 ?) l# |1 {
最少0.00032 英寸,，就是 8微米