WebTempering temperature, °C. GB/T 1222. 65Mn. 830 ± 20. Oil. 540 ± 20. Annealing process: Annealing temperature (860 ± 10) °C, heat preservation for 45-60min, furnace cooling to (750 ± 10) °C, heat preservation for 3 … WebD3 Steel Having 12 % ledeburitic chromium tool steel with great wears resistance . D3 Steel having properties of High Carbon 2% and High chromium 12 % tool steel with high wear resistance. Its supply condition is normally annealed to easy machining which recommended hardness is 57-58 HRC after making the dies & tools.
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