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Alloy Steel Bar factory Designation by Standards Steel No.DIN 1.274645NiCrMoV16-6 聽 Chemical composition(mass fraction)(wt.%) of the cool slowly in furnace. This will produce a maximum Brinell hardness of 295. Stress Relieving Stress relieving to remove machining stresses should be carried out by heating to approx. 650鈩? holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment. Hardening Harden from a temperature of 880-910鈩?followed by air or oil quenching or warm bath quenching 180-220鈩? Hardness after quenching is 56 HRC. Tempering Tempering temperature: See the data bellow. Tempering Temperature (鈩? vs. Hardness (HRC) 100鈩?/p>200鈩?/p>300鈩?/p>400鈩?/p>500鈩?/p>550鈩?/p> 565452504948 Forging Hot forming temperature: 1100-900鈩?聽Alloy Steel Bar factory website:http://www.htspecialmetals.com/alloy-steel/alloy-steel-bar/