38CrMoAl Steel Round Bar Hot Rolled Alloy Bar 38Crmoal Alloy Structural Steel Heat Treatment
Name: 38CrMoAl alloy steel
Standard: GB / T 3077-1988
38CrMoAl alloy steel chemical composition:
| C | Si | Mn | S | P | Cr | Al | Ni | Cu | Mo |
| 0.35～0.42 | 0.20～0.45 | 0.30～0.60 | ≤0.035 | ≤0.035 | 1.35～1.65 | 0.70～1.10 | ≤0.030 | ≤0.030 | 0.15～0.25 |
38CrMoAl alloy steel mechanical properties:
Tensile strength σb (MPa): ≥ 980 (100) Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 14 Reduction of ψ (%): ≥ 50
Impact energy Akv (J): ≥ 71 Impact toughness αkv (J/cm2): ≥ 88 (9)
Hardness : ≤ 229HB Sample size: Sample size is 30mm rough
Heat treatment and microstructure specifications :
Heat treatment specifications: quenching 940 ℃, water, oil cooling ; tempering 640 ℃, water, oil cooling .
Delivery status : to heat treatment ( normalizing, annealing or tempering ) or without heat treatment delivery , the delivery status should be specified in the contract.
Range 38CrMoAl alloy structural steel characteristics and applicable : 38CrMoAl has high surface hardness , wear resistance and fatigue strength , and has good heat resistance and corrosion resistance , hardenability is not high. For the production of high wear resistance , high fatigue strength and considerable strength , high dimensional accuracy after treatment nitride parts, such as imitation mold, cylinder liner , gear, high pressure valves, boring bar , worm , grinding spindles . But part of a larger size is not appropriate .
38crmoal senior nitrided steel , mainly used for high wear resistance high fatigue strength and considerable strength after heat treatment dimensionally accurate parts nitride or nitride under shock loading of various small and high wear resistance parts , such as the boring bar . grinder spindle automatic lathe spindle. worm . precision screw . precision gears. pressure valves . stem. gauge . template . roller . imitation mode . cylinder block . compressor rod , adjusting the turbine on accelerator . rotating sets. variety of wearable pieces , such as fixed sets , rubber and plastic extrusion machines.
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