What does HY mean in Governmental & Military

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All HY meanings

What does HY stand for?

HY stands for "High Yield steel"

How to abbreviate "High Yield steel"?

"High Yield steel" can be abbreviated as HY

What is the meaning of HY abbreviation?

The meaning of HY abbreviation is "High Yield steel"

What does HY mean?

HY as abbreviation means "High Yield steel"