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QCr0.5-0.2-0.1 chromium bronze characteristics and scope of application: with a small amount of magnesium, chromium, chromium bronze, compared with QCr0.5, not only to further improve the heat resistance and corrosion resistance, and can improve the gap perceptual, performance and other similar QCr0.5. QCr0.5-0.2-0.2 chemical composition: chromium copper aluminum Al: 0.1-0.25 - Cu: residual impurities: chromium Cr 0.5:0.4 to 1.0 Mg Mg: 0.1-0.25 mechanical properties, hardness (HB) 110 or higher heat treatment process: hot working temperature of 900 ~ 950 ℃. Quenching temperature of 950 ~ 1000 ℃ water; L tempering temperature 400 ~ 450 ℃
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