Cr12MoV hot rolled steel round bars
Cr12MoV hot rolled steel round bars
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- Commodity name: Cr12MoV hot rolled steel round bars
The hardenability, hardness, strength and toughness of Cr12MoV die steel after quenching and tempering are higher than CR12. The work with a diameter of 300~400mm can be completely hardened, and the quenching deformation is small, but the high temperature plasticity is poor. Cr12MoV is mostly used to manufacture composite molds and tools with large cross-sections, complex shapes, and heavy workloads.
Cr12MoV hot rolled steel round bars information
Cr12MoV steel has high hardenability, and those with a cross-section of 300 to 400 mm or less can be completely quenched
It can maintain good hardness and wear resistance at 300 ～ 400℃, its toughness is higher than Cr12 steel, and its volume change is minimal during quenching. It can be used to manufacture various molds and tools with large cross-sections, complex shapes, and withstand large impact loads. For example, punching dies with complex shapes, inserts on complex dies, steel deep drawing dies, wire drawing dies, threaded wire plate, cold extrusion dies, cold cutting scissors, circular saws, standard tools, measuring tools, etc.
Cr12MoV steel is a high-carbon, high-molybdenum lysic steel. Its carbon content is much lower than that of Crl2 steel, and it is added with molybdenum and vanadium elements, which significantly improves the steel's thermal processing properties, impact toughness and carbide distribution . The steel has high wear resistance, hardenability, hardenability, toughness, thermal stability, compressive strength, as well as micro deformation, excellent comprehensive performance and extensive adaptability. The heat softening temperature is 520℃. The cut-off size is below 4mm and can be completely hardened. The wear resistance of this steel is 3~4 times higher than that of a low-strength tool steel, and the quenching volume is small. Hardening depth: oil quenching 200~300mm.
During the crystallization process, a large number of eutectic white carbides are formed (the carbonized substance fraction is about 20%, and the eutectic temperature is about 1150°C). These carbides are very hard and brittle. Although the carbides are broken to a certain degree after billet rolling, the carbides are distributed in bands, slabs, blocks, and piles along the rolling direction, and the degree of segregation increases with the diameter of the steel.Chemical and Mechanical
Chemical composition% of Cr12MoV steel
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) Cu(%) 1.45～1.70 ≤0.40 ≤0.40 ≤0.030 ≤0.030 11.00～12.50 ≤0.20 0.40～0.60 0.15～0.30 ≤0.30
Mechanical properties of grade Cr12MoVProof strength
Rp0.2(MPa)Tensile strength
Rm(MPa)Impact energy
KV(J)Elongation at fracture
A(%)Reduction in cross sectionon fracture
Z(%)As-Heat-Treated Condition Brinell hardness(HBW) 485(≥) 154(≥) 43 42 44 Solution and Aging,Annealing,Ausaging,Q+T,etc 112 Cr12MoV equivalents alloy steel
Steel Country Code C(%) V(%) Si(%) Mn(%) P(%) S(%) Cr(%) SKD11 CNS 1.4-1.6 0.2-0.5 ≦0.4 ≦0.6 ≦0.03 ≦0.03 11.0-13.0 Cr12MoV GB 1.45-1.70 0.15-0.30 ≦0.4 ≦0.4 ≦0.03 ≦0.03 11.0-12.5 SKD11 JIS 1.4-1.6 0.2-0.5 ≦0.4 ≦0.6 ≦0.03 ≦0.03 11.0-13.0 X165Cr-MoV12 DIN 1.55-1.75 0.1-0.5 0.25-0.40 0.2-0.4 ≦0.03 ≦0.03 11.0-12.0 Cr12MoV steel Range of products
Product type Products Dimension Processes Deliver Status Plates/Sheets Plates/Sheets 0.08-200mm(T)*W*L Forging, hot rolling, and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting, Coil/Strip Steel Coil/Steel Strip 0.03-16.0x1200mm Cold-Rolled&Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting Pipes/Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED Heat treatment of Cr12MoV Alloy Steel
spheroidizing annealing:860℃ X 2h furnace cooling to 750℃ and then furnace cooling to 500-550℃, remove out and air cooling
Quenched + tempered:1100℃ X 20min step quenching + 700℃ X 1h tempering,remove out and air cooling
Quenching:1030℃ X 40min oil quenching(800℃ preheating,vacuum 2.5 pa) Tempering: 250℃ X 1h
Application
Cold work dies steel, steel hardenability, quenching, and tempering hardness, wear resistance, strength is higher than Cr12. Used in the manufacture of various cold stamping dies and tools with large cross- sections, complex shapes and heavy working conditions, such as punching die, trimming die, piping dies, deep drawing dies, circular saw, standard tools, and gauges Thread rolling die, etc.
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