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31CrMoV9 1.8509 / 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10-300mm
| Place of Origin | China |
|---|---|
| Brand Name | DELTA |
| Certification | ISO |
| Model Number | 31CrMoV9（1.8509）/ 38CrMoAlA |
| Minimum Order Quantity | 1 Ton |
| Price | 600-850 USD/Ton |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
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xProduct Details
| Products Name | Alloy Steel Round Bar | Diameter | 10 - 300mm |
|---|---|---|---|
| Length | 6m | Tech | Hot Rolled |
| Service | Cutting | MOQ | 1 Ton |
| Loading Port | Shanghai Port | Standard | ASTM EN GB |
| Highlight | 38CrMoAlA Steel Round Bar,31CrMoV9 Steel Round Bar,Precision Machining Steel Round Bar |
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Product Description
31CrMoV9(1.8509)/ 38CrMoAlA Nitriding Alloy Steel Round Bar for Precision Machining
Products Specification
|
Products Name |
38CrMoAlA Nitriding Steel Round Bar |
|
Diameter |
10 - 300 mm |
|
Length |
6m or custom cutting any length as request |
|
Type |
Hot Rolled |
|
Brand |
BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc |
|
MOQ |
1 Ton |
|
Loading Port |
Shanghai Port |
|
Packing |
packing by steel wire rope |
|
Deliver time |
5 - 7 days for stock materials |
|
Other Grade |
Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo,304,3 16,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn, 50Cr,3Cr2W8V,20CrMnTi,5CrMnMo ,38CrMoAl, 31CrMoV9 |
|
Standard |
ASTM GB EN DIN |
|
Application |
Structure and Industrial |
Product Name: 38CrMoAlA Alloy Steel Round Bar (Nitriding Steel)
- Standard: GB/T 3077 (China)
- Material Type: High-Strength Nitriding Alloy Steel
- Shape: Round Bar (Diameter Range: Φ10mm–Φ300mm, customizable)
Chemical Composition (wt%):
| Element | C | Cr | Mo | Al | Mn | Si | P (≤) | S (≤) |
|---|---|---|---|---|---|---|---|---|
| Content | 0.35~0.42 | 1.35~1.65 | 0.15~0.25 | 1.00~1.30 | 0.30~0.60 | 0.20~0.45 | 0.025 | 0.025 |
Mechanical Properties (After Heat Treatment):
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Tensile Strength (σ₃): ≥980 MPa
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Yield Strength (σ₅): ≥835 MPa
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Elongation (δ): ≥14%
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Impact Toughness (AKU): ≥63 J
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Surface Hardness (After Nitriding): ≥850 HV
Key Features:
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Excellent Nitridability: High aluminum (Al) content ensures a hard, wear-resistant nitride layer (0.3–0.5mm depth).
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High Core Strength: Suitable for heavy-load components requiring both surface hardness and core toughness.
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Stability: Good resistance to tempering and fatigue.
Heat Treatment Recommendations:
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Quenching: 930–950°C (Oil cooling)
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Tempering: 600–650°C (Air cooling)
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Nitriding: 500–530°C (Ion/Gas nitriding for optimal surface hardness)
Typical Applications:
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Precision gears, shafts, and spindles
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Injection molding machine screws
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Aerospace and automotive high-wear components
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Hydraulic/pneumatic cylinders
Equivalent Grades (International Standards):
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USA (ASTM/AMS): AMS 6470 (Nitraloy 135M)
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Europe (EN/DIN): 31CrMoV9 (1.8509)
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Japan (JIS): SACM645
Packaging & Delivery:
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Packaging: Bundles with steel straps, waterproof paper, or as per customer request.
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Surface Protection: Oiled or phosphated to prevent rust.
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Lead Time: 15–30 days (Subject to quantity).
Certifications:
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Mill Test Certificate (MTC) per EN 10204 3.1
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Compliance with GB, ISO, or customer-specified standards.
Note: Custom sizes, heat treatment, and testing (e.g., UT, hardness mapping) are available upon request.
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