Fastener Guide / Plating, Coatings & Finishes

Zinc-Nickel

Zinc-nickel is an electroplated alloy of zinc with roughly 12 - 16% nickel. It gives several times the corrosion life of plain zinc at the same thickness and is common on automotive parts.

Last reviewed 2026-09-10 · Governing standard: ASTM B841; ISO 19598; ISO 4042:2022 · reference FG-840A13 · Report an error on this sheet

Zinc-nickel at a glance

Nickel contentAbout 12 - 16%
SpecificationASTM B841; ISO 19598
CorrosionMuch higher than plain zinc; good at elevated temperature
PassivatesClear, iridescent or black, usually trivalent
Hydrogen riskStill an electroplate: relief bake rules apply

These tables carry the same figures as the printed sheet below.

The printed sheet

Zinc-Nickel

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Text version of this sheet

Zinc-nickel alloy electroplate

FIELD IDENTIFICATION

What it is

Zinc-nickel is an electroplated alloy of zinc with roughly 12 - 16% nickel. It gives several times the

corrosion life of plain zinc at the same thickness and is common on automotive parts.

ZINC-NICKEL

Zinc-nickel alloy plate

Zinc-nickel at a glance

Nickel content

About 12 - 16%

Specification

ASTM B841; ISO 19598

Corrosion

Much higher than plain zinc; good at elevated temperature

Passivates

Clear, iridescent or black, usually trivalent

Hydrogen risk

Still an electroplate: relief bake rules apply

Key points

Electroplating can load high-hardness steel with hydrogen. Parts at roughly HRC 39 and above (Grade 8, 10.9, 12.9, A574) need a qualified process and a

prompt embrittlement-relief bake, or a non-electrolytic coating instead.

Governing standards: ASTM B841; ISO 19598; ISO 4042:2022. Editions shown are the latest confirmed as of September 2026. The drawing and the governing standard always take

precedence over this sheet.

torquing any fastener. Verify the current governing standard, project documents, OEM requirements, size, thread, coating and lot certification. To the fullest extent permitted by law, The Fastener App disclaims liability

arising from reliance on this reference.

Fastener Guide reference FG-840A13 · thefastenerapp.com/fastener-guide/plating-coatings-finishes/zinc-nickel · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

Related sheets

← Trivalent vs Hexavalent ChromateZinc-Iron and Zinc-Cobalt →

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