JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity |
| Packaging Details | standard packing for export |
| 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 |
| Brand Name | DELTA |
| Model Number | 31CrMoV9（1.8509）/ 38CrMoAlA |
| Certification | ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity | Packaging Details | standard packing for export |
| 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 |
| Brand Name | DELTA | Model Number | 31CrMoV9（1.8509）/ 38CrMoAlA |
| Certification | ISO | Place of Origin | China |
| High Light | 38CrMoAlA Alloy Steel Round Bar ，1.8509 Steel Rod ，CNC Machining Alloy Steel Round Bar | ||
CNC Machining Grade 38CrMoAlA Alloy Steel Round Bar Alloy 31CrMoV9 / 1.8509 Steel Rod
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 is a high-performance nitriding steel widely used in precision engineering applications due to its exceptional surface hardness and core toughness. It is ideal for components requiring wear resistance, high fatigue strength, and dimensional stability after nitriding.
✔ Superior Nitriding Performance – Forms a hard nitride layer (≥850 HV) with excellent wear resistance.
✔ High Strength & Toughness – Maintains good mechanical properties even after heat treatment.
✔ Machinability & Weldability – Can be machined in annealed condition; pre-/post-weld heat treatment recommended.
✔ Thermal Stability – Resists softening at elevated temperatures.
| Element | C | Cr | Mo | Al | Mn | Si | P ≤ | S ≤ |
|---|---|---|---|---|---|---|---|---|
| % Range | 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 |
| Property | Tensile Strength | Yield Strength | Elongation | Impact Toughness | Hardness (HB) |
|---|---|---|---|---|---|
| Value | ≥980 MPa | ≥835 MPa | ≥14% | ≥63 J | 269–302 |
Surface Hardness: 900–1100 HV
Nitride Layer Depth: 0.3–0.6 mm (adjustable via nitriding process)
Distortion Control: Low deformation due to controlled heat treatment.
Annealing (Optional for Machining): 840–860°C, slow cooling.
Quenching: 930–950°C (oil cooling).
Tempering: 600–650°C (air cooling).
Nitriding (Gas/Ion/Plasma): 500–540°C (time varies based on required case depth).
| Country | Standard | Equivalent Grade |
|---|---|---|
| USA | AMS | AMS 6470 (Nitraloy 135M) |
| Germany | DIN | 31CrMoV9 (1.8509) |
| Japan | JIS | SACM645 |
| Europe | EN | 34CrAlNi7 (1.8550) |
Precision Gears & Transmission Parts
Hydraulic/Pneumatic Cylinder Rods
Plastic Injection Molding Screws & Barrels
Aerospace & Automotive High-Stress Components
Tooling & Fixtures Requiring Wear Resistance
Round Bars: Ø10mm – Ø300mm (standard), custom diameters available.
Surface Finish: Black, polished, or precision ground.
Certification: EN 10204 3.1, ISO 683-3, or customer-specific requirements.
Special Processing: Ultrasonic testing (UT), straightening, pre-cut lengths.
✅ Strict Quality Control – Fully traceable material batches.
✅ Competitive Lead Time – Stock availability for common sizes.
✅ Technical Support – Heat treatment & machining recommendations provided.
Contact us for a quote or additional technical data!
More structured, application-focused (emphasizes machining, welding, and nitriding performance).
Expanded heat treatment details (includes annealing for machinability).
Clearer global equivalents table (improves cross-standard reference).
Stronger commercial appeal (highlights quality control and support).
Let me know if you'd like further adjustments (e.g., more ASTM-focused or additional testing details).
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
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