合金结构钢40CrNiMoA圆钢#供货热处理状态
【合结钢】基本说明
40 crnimoa 40 crnimoa round steel, steel guitar, 40 crnimoa steel, referred to as "combination of steel, alloy structural steel 40 crnimoa is one of the combination of steel, also known as alloy steel, it is on the basis of high quality carbon structural steel, appropriately add one or several kinds of alloy elements (total content less than 5%), made of steel. Bearing parts after heat treatment of the common quality defects are: quenching microstructure overheating, less heat, quenching crack, hardness is not enough, heat treatment deformation, surface decarburization, soft point etc.
【合结钢】产品特点
40CrNiMoA用途:用作要求高强度、高韧性、截面尺寸较大的和较重要的调质零件,如卧式锻造机的传动偏心轴、锻压机曲轴等。经调质后使用,用于制作要求塑性好,强度高及大尺寸的重要零件。如果重型机械中高载荷的轴类、直径大于250mm的汽轮机轴、叶片、高载荷的传动件、紧固件、曲轴、齿轮等。此外,还可以进行氮化处理后用来制作特殊性能要求的重要零件。
【合结钢】参数规格
化学成份:
碳 C :0.37~0.44
硅 Si:0.17~0.37
锰 Mn:0.50~0.80
硫 S :允许残余含量≤0.025
磷 P :允许残余含量≤0.025
铬 Cr:0.60~0.90
镍 Ni:1.25~1.65
铜 Cu:允许残余含量≤0.025
钼 Mo:0.15~0.25
力学性能:
抗拉强度 σb (MPa):≥980(100)
屈服强度 σs (MPa):≥835(85)
伸长率 δ5 (%):≥12
断面收缩率 ψ (%):≥55
冲击功 Akv (J):≥78
冲击韧性值 αkv (J/cm2):≥98(10)
硬度:≤269HB
试样尺寸:试样毛坯尺寸为25mm