D2 Tool Die Steel Cold-Work Flat Bar cold rolled steel d2 die steel MOQ: ... 1 ton Stable quality D2 Tool Die Steel Cold-Work Flat Barcold rolled steeld2 die steelMOQ: 1 tonStable quality Chemical ... °c, keep temperature 2-4H, furnace cold below, out and air cold.2.Steel is thermal technology: heat ... 740°c, keep 4H, furnace cold below 550°c, out and air cold, tempering hardness 207-255HBS. Characteristic:1. ...
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