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I have a customer asking for a Chrome Moly Steel casting, and I need to figure out what the chemistry is so we can quote it or an equivalent. The only reference they could give me was to another part they get for a similar application and it is a Nordberg part, material is listed as 60 C Chrome...

I need a source for some 5" to 11" diameter 281°F Tin-Bismuth alloy castings for scroll impellers. Need about 5,000 per year Any thoughts? Bob Dzugan www.buyCASTINGS.com

an investment casting could be competitive at the 20,000 to 100,000 pieces per year and could possibly get a part to cost $1 to $3 depending on several things, mostly size and weight. 316L is very common and most cast it, but for your needs they should use certified ingot stock for cleanliness...

Does anyone know of any ductile iron specification that's called 93-3 or ES-PM-0093-03. May be some automotive spec. Thanks in advance Bob Dzugan www.buyCASTINGS.com

Hip'ing of castings is common and may increase you chance of making a casting vacuum tight. We just completed a project for Princeton Univ on casting some vacuum vessels, since these were thin walls HIP'ing was not vey useful. You must have a sound skin on the casting for HIP to work. Large...

The lower the pouring temp the better chance you have for a finer grain structure and hence better properties. If in a real bind, HIP the castings, will increase yield and ductility and close any porosity. Bob Dzugan www.buyCASTINGS.com

any thoughts if you have to quench and temper WCC to achieve a charpy of 20 ft/lb at -22F, or is as cast ok? Thanks

We work with alot of aluminum casting guys of all types. Sounds like sand would be best, there are precision sand guys, a356 is probably the best. Let me know if you need some names of good foundries. we could even get you several quotes. Send me a drawing