SAE AISI 4140 Alloy Steel Round Bar 10-350mm Diameter with 1020-1075 MPa Tensile Strength
Price:
600-850 USD/Ton
MOQ:
1 Ton
Delivery Time:
5 - 12 days based on the quantity
Brand:
DELTA
Product Description
Product Overview
SAE AISI 4140 alloy steel round bars offer exceptional strength and durability for demanding industrial applications. Available in diameters from 10mm to 350mm with standard 6-meter lengths or custom cutting options.
Specifications
| Product Name | SAE 4140 Alloy Steel Round Bar |
|---|---|
| Diameter Range | 10-300mm |
| Length | 6m standard or custom lengths |
| Type | Hot Rolled |
| Brand Options | BAOSTEEL, DELTA, DONGBEI, HUAXI, SHAGANG |
| Minimum Order | 1 Ton |
| Delivery Time | 5-7 days for stock materials |
| Standards | ASTM, GB, EN, DIN |
Available Standard Diameters
10, 12, 15, 18, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 120, 130, 140, 150, 160, 180, 200, 210, 220, 230, 250, 270, 300mm
Material Properties
SAE 4140 is a chromium-molybdenum alloy steel known for its high strength, excellent hardenability, good toughness, and minimal deformation during quenching. It maintains high creep strength and long-lasting performance at elevated temperatures.
Applications
- Aerospace components
- Oil and gas equipment
- Automotive parts
- Thin-walled pressure vessels
- Forged gears and shafts
- Motor shafts, pump shafts, hydraulic shafts
- Lathe spindles, milling spindles
- High-strength bolts, screws, nuts
- Valve bonnets, collars, clamps
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.38-0.43 |
| Silicon (Si) | 0.15-0.35 |
| Manganese (Mn) | 0.75-1.00 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.040 |
| Chromium (Cr) | 0.80-1.10 |
| Molybdenum (Mo) | 0.15-0.25 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 1020-1075 MPa (148-156 ksi) |
| Yield Strength | 414-986 MPa (60-143 ksi) |
| Elongation | 15.5-25.7% |
| Reduction in Area | 46.8-56.9% |
| Hardness (HB) | 197-311 |
International Equivalents
| Region | Standard | Grade |
|---|---|---|
| USA | ASTM A29/A29M | 4140 (G41400) |
| European Union | EN 10083-3 | 42CrMo4 (1.7225) |
| China | GB/T 3077 | 42CrMo |
| Japan | JIS G4105 | SCM440 |
Product Images
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben