Short answer: HMS 1 is generally the cleaner, thicker grade made up of solid steel of a greater minimum thickness, while HMS 2 allows thinner and more mixed material and is priced lower, but the exact thickness, size and contamination limits are set by each buyer or specification, so always check the definition your buyer uses before you prepare a load.
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List Free →Thickness
The top grade requires thicker steel, whereas the lower grade accepts thinner sections.
Cleanliness
The better grade has little or no contamination, whereas the lower grade tolerates more.
Buyers differ
Each buyer’s definition varies in detail, so ask for theirs in writing.
How ScrapTrade Fits In
ScrapTrade buyers state the grade they are quoting on, so you can compare like with like.
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