Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Ni sulfamate vs. E-Ni for fasteners

Request for Help. Between electroplating nickel sulfamate and nickel phosphorous electroless plating, which would provide a better plating for fastener product

YC CHANG
- Malaysia
2003

It depends on what you define as better. If you need to closely control geometry and uniformity, electroless is almost totally uniform whereas sulphamate will vary up to ten times from valley to crest. If you need toughness and fatigue resistance, sulphamate elongates up to 20% against 1% for most EN's. If you need corrosion resistance EN will be probably twice as good for the same thickness. If you need cost, EN is more expensive(?).

Guillermo Marrufo
Monterrey, NL, Mexico
2003

---

2003

Guillermo, I like your answers. Your know your plating stuff.

Me, I've been hanging around the vapor degreaser too much.
Just kidding
Jon

Jon Quirt
- Minneapolis, Minnesota

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

---

---