Originally Posted by
cummins
I took a load of hms 1 in Friday had a look at the price sheet while I was waiting for my paper work. 160 ton. Asked about striped engine blocks from cat and she said some of the high out put blocks are black cast and they would test them first. News to me. Figured I ask here. Grey and black cast are different . Trying to figure easy way to tell so I don't buy and lose money.
Your yard probably used a hand held XRF to determine the alloy composition of any cast suspect of being high grade.
What they're looking for is Chromium and Nickel or a combination.
This type of cast at the
foundry is worth in the neighbourhood of $800.00 ton and is used in high heat applications requiring abrasion resistance like large pumps used in the mining industry. Some English gasoline and diesel engine blocks had a high chromium content,
Chevy small block with 010 cast into the blocks have a high nickel content.
Some but not all diesel engine cylinder liners could be made from a chromium / cast iron alloy.
There are methods of identifying a metals composition using acids which are considered non destructive.
https://books.google.ca/books?id=jEv...alloys&f=false
,
Abrasion resistant cast irons/
Casting Material: Abrasion-Resistant Cast Iron 12% Cr : Sand Casting, Investment Casting and Die Casting in China
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