Replacement for Nickel Cast Iron
Replacement for Nickel Cast Iron
(OP)
Our company has a component (Bearing Casting) that is currently specified as a Nickel Cast Iron or an ASTM A-48-55 Class 30 Cast Iron. The specification dates back to 1963.
With the rising cost of Nickel we need to find a more economical solution, however standard Gray Iron presents pin hole issues. Can anyone recommend an alternate material that has low porosity and similar mechanical properties without using Nickel as an alloying agent?
Any advice would be helpful. Thanks!
With the rising cost of Nickel we need to find a more economical solution, however standard Gray Iron presents pin hole issues. Can anyone recommend an alternate material that has low porosity and similar mechanical properties without using Nickel as an alloying agent?
Any advice would be helpful. Thanks!





RE: Replacement for Nickel Cast Iron
RE: Replacement for Nickel Cast Iron
RE: Replacement for Nickel Cast Iron
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"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: Replacement for Nickel Cast Iron
RE: Replacement for Nickel Cast Iron
the Ni isn't the magic for making good castings. Your foundry has some serious moisture/hydrogen/oxygen issues that they need to address.
A Ni addition does increase the toughness (esp at low temp) and hot strength of the metal.
So we ask again, why was this alloy specified?
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Plymouth Tube
RE: Replacement for Nickel Cast Iron
RE: Replacement for Nickel Cast Iron
_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: Replacement for Nickel Cast Iron
RE: Replacement for Nickel Cast Iron
The Ni isn't giving better castings, a change in melting/casting practice is giving the bad ones.
These are two separate issues.
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Plymouth Tube