CR14MO4V characteristics, chemical composition, heat treatment and application range of die steel
CR14MO4V模具钢的特性
(1) Since the CR14MO4V is medium and high carbon steel, the alloying elements V and Mo that can form strong carbides and medium strong carbides must be added to avoid the formation of too much carbide between the CR element and the C element, reduce the content of CR elements in the matrix, and thus reduce the corrosion resistance.
(2) The carbides of V and Mo elements can not only be used as the reinforcement of CR14MO4V steel, but also improve the strength, hardness and wear resistance, and can also play a role in refining the grain and improving the toughness of the steel.
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(3)CR14MO4V钢中,CR和Mo是提高淬透性的元素,添加量大,所以CR 14 Mo 4V钢本身具有较高的淬透性。
(4) Chromium, molybdenum and vanadium elements are dissolved in the matrix structure, which not only strengthens the matrix structure, but also improves the tempering stability of CR14MO4V steel. The addition of molybdenum can reduce the tempering brittleness of steel.
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(5) The Si and Mn elements in CR14MO4V steel can also improve the hardenability, strengthen the matrix structure through solid solution, and improve the tempering stability of the steel.
After high-temperature quenching, most of the elements CR, Mo and V are dissolved in the matrix structure. After high-temperature tempering, most of the CR, Mo and V elements will precipitate in the form of carbides, especially the carbides of Mo and V elements, which will cause the secondary hardness effect of steel.
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CR14MO4V application
CR14MO4V steel is suitable for manufacturing plastic molds with high load and high wear resistance under corrosion-resistant conditions.
CR14MO4V的化学成分
1.00%~1.15% carbon
≤ 0.60% silicon
≤ 0.60% manganese
13.40%～ 15.00%铬
3.75%~ 4.25% molybdenum
0.10%~0.20%V
≤ 0.030% phosphorus
≤0.030%S