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Cranston
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Cranston
Cranston
401.943.9900 Mon - Fri 08:00 - 4:30 1425 Cranston St Cranston, RI 02920
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ASTM B733 Type V and AMS 2404 Electroless Nickel

Home » Technical Specifications » ASTM B733 Type V and AMS 2404 Electroless Nickel

DiFruscia Industries applies high-phosphorus electroless nickel to ASTM B733 Type V and AMS 2404, under DFI’s AS9100D quality system. Electroless nickel is not a Nadcap special process.

What electroless nickel does

Electroless nickel deposits a nickel-phosphorus alloy through a controlled chemical reaction rather than electric current. Because no current is involved, the coating builds at the same rate on every wetted surface: edges, holes, threads and internal features all get the same thickness. DFI runs the high-phosphorus variant, more than 10% phosphorus, chosen for maximum corrosion resistance. See Electroless Nickel.

The specifications

Callout What it covers
ASTM B733 Type V Autocatalytic nickel-phosphorus coatings. Type V is high phosphorus, more than 10% P
AMS 2404 Electroless nickel plating for aerospace parts

What to expect

  • Uniform thickness on edges, holes, threads and internal features.
  • Corrosion and wear resistance, and hardness, on most metals. Confirm your substrate with DFI.
  • Appearance: bright to semi-bright metallic.
  • Non-magnetic as plated.

How to call it out on the drawing

  • Give the thickness and the service condition. Thicker deposits give more corrosion protection.
  • Note any heat treatment. Baking after plating increases hardness and adhesion.
  • High-strength steels may need hydrogen embrittlement relief baking. Put the part’s hardness on the PO.
  • Plan the dimensions. The deposit is uniform, so allow for the full thickness on every surface.

Where it’s used

Aerospace components, electronics, firearm parts, valves and pumps. For barrier nickel on small parts, see AMS-QQ-N-290 nickel plating.

Get a quote or a data sheet

Send the drawing and the spec callout to rfq@difruscia.com, or use Request a Quote. DFI’s technical data sheet for this process is available on request from Technical Specifications. Questions: 401.943.9900 or support@difruscia.com.

Values shown are typical results for reference only and are not specification limits. Results vary with alloy, part geometry, thickness and process parameters. Contact DFI to confirm the requirements for your application.