Electroless Nickel Spec Table

Electroless Nickel KS Specifications — 3 sizes
ASTM B733

ASTMElectroless Nickel

3 sizes
GradeThickness (μm)Hardness (HV)Corrosion (SST h)ColorNote
(Low-P 1~4%)5~25700200
(Mid-P 5~9%)10~25550500General Most
(High-P 10~12%)15~505001000MaxExcellent,

Electroless nickel deposits a nickel-phosphorus alloy through chemical reduction without electric current. Phosphorus content classifies it as low-P (1–4%, hardness-focused), mid-P (5–9%, general purpose), or high-P (10–12%, best corrosion resistance). Its key advantage is uniform thickness even on complex geometries. The high-P variant offers 1000+ hours SST resistance and non-magnetic properties, making it standard for semiconductor and medical equipment.

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