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31CrMoV9 Nitriding Alloy Steel Rod Diameter 10 - 320mm Custom Cutting For Industrial
| 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 | 320mm Nitriding Alloy Steel Rod,Industrial Nitriding Alloy Steel Rod,10mm Nitriding Alloy Steel Rod |
||
Product Description
31CrMoV9 Nitriding Alloy Steel Rod Diameter 10 - 320mm Custom Cutting for Industrial Applications
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 |
38CrMoAlA Nitriding Alloy Steel - Technical Product Specification
Material Classification:
- Premium Nitriding Steel Grade (Aluminum-Containing Alloy Steel)
- Manufacturing Standard:
- GB/T 3077-2015 (Equivalent to ISO 683-3:2016)
Key Material Advantages:
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Exceptional nitride layer formation capability (Al-enhanced)
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Superior fatigue resistance and load-bearing capacity
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Optimized for precision machining in pre-treated condition
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Excellent dimensional stability post-nitriding
Enhanced Metallurgical Properties:
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Controlled grain structure for improved fracture toughness
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Reduced residual stresses through specialized heat treatment
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Uniform hardness penetration characteristics
Chemical Composition (Optimized Analysis):
| Element | C | Cr | Mo | Al | V* | Mn | Si | Trace Elements |
|---|---|---|---|---|---|---|---|---|
| Content | 0.37-0.40 | 1.40-1.60 | 0.18-0.22 | 1.10-1.25 | ≤0.05 | 0.40-0.55 | 0.30-0.40 | P,S ≤0.020 |
*Note: Vanadium content controlled for enhanced grain refinement
Advanced Mechanical Characteristics:
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Core Properties (QT Condition):
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Tensile Strength: 1000-1150 MPa
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Yield Strength (0.2% offset): 850-950 MPa
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Reduction of Area: ≥45%
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Charpy Impact (20°C): 70-90 J
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Surface Properties (After Nitriding):
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White Layer Control: ≤25μm
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Effective Case Depth (550HV): 0.4-0.7mm
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Surface Hardness Range: 950-1200HV
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Residual Stress Profile: Compressive (-800 to -1200MPa)
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Special Processing Capabilities:
-
Precision Machining Grade:
-
Annealed hardness: 207-241 HB
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Superior chip-breaking characteristics
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Recommended cutting speeds: 80-120 m/min (carbide tools)
-
-
Controlled Distortion Heat Treatment:
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Stress-relieving protocols available
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Cryogenic treatment options (-196°C)
-
-
Surface Engineering Options:
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Plasma nitriding
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Low-temperature ion nitriding (≤480°C)
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Composite coatings (TiN/DLC over nitride layer)
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Quality Assurance Protocols:
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100% ultrasonic testing (ASTM A388 Class B)
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Hydrogen content control (<2ppm)
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Microcleanliness: ASTM E45 Method A, ≤2.0 total inclusions
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Straightness tolerance: 0.5mm/m
Global Technical Equivalents:
| Region | Standard | Comparable Grade | Key Differences |
|---|---|---|---|
| North America | AMS 6470M | Nitraloy 135M | Higher Al content in 38CrMoAlA |
| EU | EN 10085 | 31CrMoV9 | Better nitride stability |
| Japan | JIS G4202 | SACM645 | Tighter S/P control |
Premium Applications:
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High-speed spindle components (CNC machining centers)
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Fuel injection systems (marine/aviation)
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Precision gear trains (robotics/space mechanisms)
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Semiconductor processing equipment
Supply Specifications:
-
Diameter range: 12mm to 400mm
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Lengths: 3-6m standard, custom cuts available
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Surface: Peeled/Turned/Precision Ground (+/-0.05mm)
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Packaging: VCI-coated, wooden crates
Technical Support Services:
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Material selection consultation
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Failure analysis available
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Custom heat treatment development
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Application engineering support
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