Alternatives for corrosion resistant alloys to Hastelloy
Alternatives for corrosion resistant alloys to Hastelloy
(OP)
Hi guys,
Looking for an alternative material to Hastelloy C-273, in a medical device heat exchanger, where it will be exposed to heavy use of bleach (that eliminates stainless steels as possible option), so corrosion resistance is the top priority; but also cost and low density for the medical device weight.
Do you know of an equivalent alloy to C-273, cheaper and resistant to chlorine corrosion?
I appreciate any suggestion you can give me.
Looking for an alternative material to Hastelloy C-273, in a medical device heat exchanger, where it will be exposed to heavy use of bleach (that eliminates stainless steels as possible option), so corrosion resistance is the top priority; but also cost and low density for the medical device weight.
Do you know of an equivalent alloy to C-273, cheaper and resistant to chlorine corrosion?
I appreciate any suggestion you can give me.





RE: Alternatives for corrosion resistant alloys to Hastelloy
Tom
RE: Alternatives for corrosion resistant alloys to Hastelloy
What are the commercially most common Copper-Nickel alloys (70 to 90 % Copper) that you mention?
RE: Alternatives for corrosion resistant alloys to Hastelloy
The "C" type Ni-Cr-Mo alloys (include alloy 59) are great at pitting and cracking resistance.
Ti is a good option if you are not talking about high temperatures.
You might also consider a superferritic stainless, as these also resist stress corroison cracking.
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Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Alternatives for corrosion resistant alloys to Hastelloy
Jim Treglio
Molecular Metallurgy, Inc.
RE: Alternatives for corrosion resistant alloys to Hastelloy
Scott Pyle
High Performance Alloys
444 Wilson St.
P.O. Box 40
Tipton, Indiana 46072
800 472-5569
They supply us and we have been very pleased with them.
Tom
RE: Alternatives for corrosion resistant alloys to Hastelloy
Jim Treglio, do you know of any specific zirconium alloy of low cost and high resistance to chlorine corrosion? I did a search but the variety of zirconium alloys is very big.
Thanks again for your answers.
RE: Alternatives for corrosion resistant alloys to Hastelloy
I can't, but you might want to check with Wah Chang or other zirconium suppliers. They should be able to help you.
Jim Treglio
Molecular Metallurgy, Inc.
RE: Alternatives for corrosion resistant alloys to Hastelloy
Recommend that you consider AL6XN for equipment subjected to the CIP clean-in-place bleach solutions. Pharmaceutical and food processing equipment and piping fabricators have worked with it for upgrade applications. The polished finishes are also important for complying to requirements of zero crevices for cleaning. Check with some vendors:
www.csidesigns.com (Central States Ind'l Eqt & Service)
www.psitanks.com (Precision Stainless)
www.toplineonline.com (TopLine tubing, valves, pumps)
www.alleghenybradford.com (tanks, pumps, tubing, valves)