| Customization: | Available |
|---|---|
| After-sales Service: | AISI 9840 Round Steel Alloy 9840 9840 Steel SAE |
| Warranty: | 365days |
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aisi 9840 Round Steel
Alloy 9840
9840 steel
SAE 9840
aisi 9840 Round Steel(commonly quenched steel) high hardenability Main applications: high strength parts such as aero engine shaft, shaft, gear, fastener and so on.
Chemical composition of aisi 9840 Round Steel
Carbon C 0.37~0.44
Si 0.17~0.37
Manganese Mn 0.50 ~ 0.80
Allowable residual content of sulfur S ≤0.025
Allowable residual content of P ≤0.025
Cr 0.60 ~ 0.90
Ni 1.25 ~ 1.65
Allowable residual Cu content ≤0.25
Molybdenum Mo 0.15 ~ 0.25
Mechanical properties of aisi 9840 Round Steel
Tensile strength σb (MPa) : ≥980(100)
Yield strength σs (MPa) : ≥835(85)
Elongation δ5 (%) : ≥12
Reduction rate of cross-section (%) : ≥55
Impact work Aku (J) : ≥78
Impact toughness αkv (J/cm²) : ≥98(10)
Sample size: sample blank size is 25mm
Heat treatment: quenching 850 degrees; Coolant: oil; Tempering temperature 600 degrees; Coolant: water, oil);
Steel annealing or high temperature tempering supply state Brinell hardness GBW≤269;
aisi 9840 Round Steel Applicable scope editorial broadcast
Generally, important parts with high strength and good plasticity are made. Important parts with special performance requirements are made after nitriding, such as shafts, gears, fasteners, etc.
Theoretical weight editor broadcast
Round steel: Weight (kg)=0.00000785 (bonding steel density) * Radius * Radius *3.14* Length (mm)
Flat steel/sheet: Weight (kg)=0.00000785* Thickness * side width * length Pipe: Weight (kg)=0.02466× wall thickness ×(OD -- wall thickness)
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