Summary for stainless steel 430 rust Discussion
stainless steel 430 rust after boiling water is the central concern here: CT Chew asked whether rust appearing on a rice cooker cover made from SS430 after only 10 minutes of boiling water is normal, whether 430 can be used for boiling water, and whether salt spray testing is appropriate. Tom Gallant replied that standard 430, if hardened and properly passivated, should be fairly resistant to boiling water for quite a while, though it could eventually fail. Lee Kremer added that 430 stainless can be run in ASTM B117 salt spray testing, but it is only somewhat resistant when properly passivated and will eventually fail. The thread therefore suggests that early rust is not ideal and may point to material condition, passivation, or service environment issues rather than guaranteed performance of 430 in hot water.
I have tested boiling water using a rice cooker where the rice cooker cover was made form stainless steel 430 and found rust on the cover after 10 minutes of boiling.
1) I would like to know if this is a normal condition.
2) Will the stainless steel 430 become rust if use for boiling water.
3) Can I apply salt spray test on the SS430.
Looking forward to your reply.
CT Chew
– Kuala Lumpur, Wilayah Persekutuan, Malaysia
2004
See question #32960 on this website.
Tom Gallant
– Long Beach, California, USA
2004
If it is standard 430 and is hardened and properly passivated it should be fairly resistant to boiling water for quite awhile, but it could eventually fail.
You can run salt spray (ASTM
ASTM B117 ) on 430 ss. It is somewhat resistant when properly passivated, but will eventually fail.
Lee Kremer
Stellar Solutions, Inc.
McHenry, Illinois
2004
January 18, 2009
Hi,
Can you letme know what chemical is suitable used to passivate SUS
430 to prevent rusty happening? And cconcentration 40-55% of sodium hydroxide will make rust on SUS 430? high concentration for 45-50% of nitric acid also will make rust on SUS 430?
Thanks and regards,
chyeheng tey
metal finishing – woodlands,singapore
Q. Can SS430 sustain -86 °C temperature?
Is it a corrosion resistant in this low operating temperature?
How can we join two SS430 components?
ASHU RAINA
– Hyderabad, Andhra Pradesh, INDIA
January 3, 2013
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