55CrNiMoV5 Hardware Tool Steel Sheet

55CrNiMoV6 steel has good toughness, strength and high wear resistance. It is at room temperature and 500 ~ 600 ℃ when the mechanical properties are almost the same. In the heating to 500 ℃, 55CrNiMoV6 steel still able to maintain the hardness of about HB300. As the steel contains molybdenum, which is not sensitive to temper brittleness. After slowly cooling down from 600 ° C, the impact toughness is only slightly reduced.

55CrNiMoV6 steel has good hardenability. 300mm × 400mm × 300mm large pieces of steel, from 820 ℃ oil quenching and 560 ℃ tempering, the hardness of the various parts of the section is almost the same. The kind of steel used to manufacture all kinds of large and medium forging die.

Chemical Composition:

• Carbon C: 0.50～0.60

• Silicon Si: ≤0.40

• Manganese Mn: 0.50～0.80

• Sulfur S: ≤0.030

• Phosphorus P: ≤0.030

• Chromium Cr: 0.50～0.80

• Nickel Ni: 1.40～1.80

• Copper Cu: allowable residual content ≤0.30

• Vanadium V: allowable residual content <0.2

• Mo: 0.15～0.30

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