18Cr2Ni4WA, 18Cr2Ni4WA material, 18Cr2Ni4WA round, 18Cr2Ni4WA ..

18Cr2Ni4WA, 18Cr2Ni4WA material, 18Cr2Ni4WA round, 18Cr2Ni4WA price Material Name: Alloy structural steel grades: 18Cr2Ni4WA Standard: GB / T 3077-1988 18Cr2Ni4WA is a high strength alloy case-hardened steel. For C compounds and austenite content is not exceeded after carburizing may be tempering 900 ~ 920 ℃ carburizing, tempering 600 ~ 650, cryogenic treatment, the hardness after quenching oil is 48 or so, I want to achieve HRC58- 63, must be carried out carburizing. [1] 18Cr2Ni4WA alloy steel used carburizing steel, strength, high toughness, good hardenability, but also in non-carburizing and quenching of the case, generally used as a large cross-section, high loads and good toughness, notch Low sensitivity of the important parts. ● Chemical Composition: Carbon C: 0.13 ~ 0.19 Si Si: 0.17 ~ 0.37 Manganese Mn: 0.30 ~ 0.60 Sulfur S: to allow the residual phosphorus content ≤0.025 P: allow the residual content ≤0.025 chromium Cr: 1.35 ~ 1.65 Ni-Ni: 4.00 ~ 4.50 Copper Cu: to allow the residual content ≤0.025 Tungsten W: 0.80 ~ 1.20 ● Mechanical Properties: Tensile strength σb (MPa): ≥1175 (120) yield strength σs (MPa): ≥1029 (105) Elongation δ5 (%) : ≥10 section shrinkage ψ (%): ≥45 impact energy Akv (J): ≥78 impact toughness αkv (J / cm2): ≥98 (10) Hardness: ≤269HB sample size: Sample size is rough 15mm