All Products
-
Raian IonescuMaterial quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
GB Standard 38CrMoAlA Steel Round Bar / Steel Shaft 80mm 100mm 120mm Diameter
| 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 |
Contact me for free samples and coupons.
Whatsapp:0086 18588475571
Wechat: 0086 18588475571
Skype: sales10@aixton.com
If you have any concern, we provide 24-hour online help.
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 | 100mm Steel Round Bar,80mm Steel Round Bar,120mm Steel Round Bar |
||
Product Description
GB Standard 38CrMoAlA Steel Round Bar / Steel Shaft 80mm 100mm 120mm Diameter
Products Specification
|
Products Name |
38CrMoAlA/1.8509 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 |
Standard Size of our Steel Round Bar In Stock
| 10mm | 12mm | 15mm | 16mm | 18mm | 20mm |
| 25mm | 30mm | 35mm | 38mm | 40mm | 42mm |
| 45mm | 48mm | 50mm | 55mm | 60mm | 65mm |
| 70mm | 75mm | 80mm | 85mm | 90mm | 95mm |
| 105mm | 110mm | 115mm | 120mm | 130mm | 140mm |
| 150mm | 160mm | 170mm | 180mm | 190mm | 200mm |
| 210mm | 220mm | 230mm | 240mm | 250mm | 260mm |
| 270mm | 280mm | 290mm | 300mm | 310mm | 320mm |
1. Overview
38CrMoAlA is a high-performance nitriding steel widely used in precision engineering due to its exceptional surface hardness, wear resistance, and fatigue strength. This round bar is optimized for applications requiring a combination of a ultra-hard nitride layer and a tough core, making it ideal for high-stress environments.
2. Key Features
-
Ultra-Hard Surface: Achieves 1000–1250 HV after gas nitriding, suitable for abrasive conditions.
-
Deep Nitride Layer: Adjustable depth (0.2–0.7 mm) based on nitriding duration and temperature.
-
High-Temperature Stability: Retains mechanical properties up to 500°C.
-
Machinability: Pre-nitriding machinability rating of 70% (compared to free-cutting steels).
3. Technical Specifications
Chemical Composition
| Element | C | Cr | Mo | Al | Mn | Si | S/P (max) |
|---|---|---|---|---|---|---|---|
| Content | 0.35–0.42 | 1.35–1.65 | 0.15–0.25 | 0.70–1.10 | 0.30–0.60 | 0.20–0.45 | ≤0.035 |
Dimensions & Tolerances
-
Diameter Range: 15–250 mm (hot-rolled), 10–120 mm (cold-drawn).
-
Length: Standard 3–6 m, custom lengths up to 12 m.
-
Straightness Tolerance: ≤1.5 mm/m (cold-drawn), ≤3 mm/m (hot-rolled).
4. Performance Data
Core Mechanical Properties (Post-Quenching & Tempering)
-
Tensile Strength: 950–1100 MPa
-
Yield Strength: ≥800 MPa
-
Elongation (δ5): ≥12%
-
Impact Energy (Charpy, 20°C): ≥55 J
Nitrided Layer Properties
-
Surface Hardness: 1000–1250 HV
-
Case Depth: 0.3–0.6 mm (standard 50-hour nitriding).
-
White Layer Control: ≤25 μm (adjustable via process parameters).
5. Processing Guidelines
Recommended Workflow
-
Soft Annealing: 850–880°C, furnace cooling to ≤220 HBW for machining.
-
Rough Machining: Pre-shape components with allowances for nitriding distortion.
-
Stress Relieving: 550–600°C post-machining to minimize dimensional changes.
-
Final Nitriding: Gas nitriding at 500–530°C for 20–100 hours.
Post-Nitriding Finishing
-
Grinding or polishing to achieve surface roughness Ra ≤0.4 μm.
-
Optional TiN or DLC coatings for enhanced tribological performance.
6. Industry Applications
-
Power Transmission: High-load gears, spline shafts, and turbine components.
-
Hydraulics: Precision piston rods, valve spools, and pump housings.
-
Tooling: Extrusion dies, injection mold cores, and wear plates.
-
Aerospace: Landing gear components, actuator systems.
7. Customization Options
-
Surface Finish: Black oxide, shot-peened, or precision-ground.
-
Certifications: EN 10204 3.1/3.2, RoHS compliance.
-
Testing Services: Inclusion rating (ASTM E45), hydrogen embrittlement testing.
8. Packaging & Delivery
-
Standard Packaging: Waterproof wrapping, steel strapping, and end protectors.
-
Export Compliance: Packed in ISO-compliant bundles for sea/air freight.
-
Lead Time: 15–30 days (stock items), 60–90 days (custom sizes).
9. Why Choose Our 38CrMoAlA Round Bars?
-
Consistent Quality: Melted in electric arc furnaces with vacuum degassing for low inclusion levels.
-
Technical Support: Free nitriding process optimization consulting.
-
Global Supply: Warehouses in EU, Asia, and North America for fast delivery.
Contact us for tailored solutions to meet your high-performance alloy steel needs!
Recommended Products