45CrNiMoVA Structural Alloy Steel Bar
45CrNiMoVA round steel is a kind of low alloy ultra-high strength steel. The steel has high hardenability. The critical hardenable diameter in oil is 60mm (96% martensite). The steel can obtain high strength after quenching and tempering. It is an alloy structural steel that has a certain degree of toughness and can be processed into shapes.
45CrNiMoVA round stock steel chemical composition
| C | Si | Mn | Cr | Ni | Mo | V | S | P |
| 0.42~0.49 | 0.17~0.37 | 0.50~0.80 | 0.80~1.10 | 1.30~1.80 | 0.20~0.30 | 0.10~0.20 | 0MAX0.025 | 0MAX0.025 |
45CrNiMoVA round bar stock mechanical property
| Tensile strength | 603～562 | σb/MPa |
| Yield Strength | 995 | σ 0.2 ≥/MPa |
| Elongation | 87 | δ5≥(％) |
| ψ | - | ψ≥(％) |
| Akv | - | Akv≥/J |
| HBS | 336～543 | - |
| HRC | 30 | - |
45CrNiMoVA round metal bar physical properties
| Thermal expansion | 16-04 | e-6/K |
| Thermal conductivity | 26-59 | W/m.K |
| Specific heat | 450-460 | J/kg.K |
| Melting temperature | 6472-8446 | 째C |
| Density | 8237-9994 | kg/m3 |
| Resistivity | 0.50-0.60 | Ohm.mm2/m |
45CrNiMoVA round stock metal Products Details
45CrNiMoVA round bar is a low-alloy ultra-high-strength steel. Our country has developed D6AC alloy steel with high yield-to-strength ratio, high strength, good toughness, high high-temperature strength, and no temper brittleness. This steel has high surface hardness and wear resistance after penetration quenching, average machinability, medium plasticity during cold deformation, but slight sensitivity and temper brittleness. Generally used after carburizing, secondary quenching and low temperature tempering. After carburizing and low temperature secondary quenching and tempering, it is used to manufacture large carburized parts with high load. It should be used after normalizing or annealing, quenching and tempering.
45CrNiMoVA steel rod is an excellent material for the aerospace industry with high strength, good toughness and crack propagation resistance, as well as good corrosion resistance and good overall processing performance. Due to its high hardenability and wide range of heat treatment processes, satisfactory comprehensive properties can be obtained through heat treatment. Alloy steel is widely used in key aircraft structures, such as landing gear, solid fuel rocket engine casings, shafts, gears, bearings, dies, pads, etc.
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