Common surface treatments

Ni/Cu/Ni

Phosphating

Blue White Zn

Black epoxy resin

镀层类型
 Type

镀层厚度 Thickness

颜色
 Color

使用温度
Temperature

老化时间PCT

耐盐雾时间
SST

特征
 Characteristic

蓝白锌
 Zn

5~7μm

蓝白色
 Blue Silver

≤160℃

>24Hr

一般防护
 Regular Protection

彩锌
 Color Zinc

5~7μm

蓝白色
 Blue Silver

≤160℃

>48Hr

一般防护
 Regular Protection

镍铜镍
NiCuNi

>12μm

银色
 Silver

≤200℃

>48Hr

>48Hr

耐盐雾、耐湿热
 Excellent humidity & salt spray resistance

环氧
 Epoxy

>10μm

黑色
 Black

≤120℃

>48Hr

>168Hr

耐盐雾、耐湿热
 Excellent humidity & salt spray resistance

磷化
 phosphorization

蓝紫色或黑色
 bluish violet

<2Hr
 Emerge in 3% NaCl liquor

临时性保护
 Temporary Protection

Notes: For different products, the Salt Spray Test and PCT time varies with the shape of the products.

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