409L Stainless Steel Round Bar (UNS S40910)
409L Stainless Steel Round Bar (UNS S40910) is a low-carbon, titanium-stabilized ferritic stainless steel developed to offer improved weldability and resistance to intergranular corrosion compared to standard 409. With reduced carbon content, 409L round bars minimize carbide precipitation during welding and provide reliable oxidation and scaling resistance at elevated temperatures. This grade is widely used where cost efficiency, heat resistance, and moderate corrosion resistance are required.
Key Features
- UNS Number: S40910
- Low-carbon ferritic stainless steel for enhanced weldability
- Titanium stabilized to prevent intergranular corrosion
- Good oxidation and scaling resistance at elevated temperatures
- Cost-effective alternative to austenitic stainless steels
- Magnetic in nature
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM / ASME | 409L |
| UNS | S40910 |
| EN | 1.4512 |
| DIN | X2CrTi12 |
| JIS | SUS 409L |
Sizes
- Diameter Range: 5 mm to 300 mm
- Length: 3 m, 6 m, or as per customer requirement
- Custom cut-to-length sizes available
409L Stainless Steel Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 10.5 – 11.75 |
| Nickel (Ni) | ≤ 0.50 |
| Titanium (Ti) | ≥ 6 × C |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
UNS S40910 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 380 MPa |
| Yield Strength (0.2% Offset) | ≥ 170 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 200 HB |
409L Physical Properties
| Property | Value |
|---|---|
| Density | 7.7 g/cm³ |
| Melting Point | 1425 – 1510°C |
| Thermal Conductivity | 24.9 W/m·K |
| Electrical Resistivity | 0.60 µΩ·m |
| Modulus of Elasticity | 200 GPa |
Types of 409L Stainless Steel Round Bar
- Hot Rolled 409L Round Bar
- Cold Drawn 409L Round Bar
- Bright 409L Round Bar
- Turned and Polished Round Bar
Applications
- Automotive exhaust systems and emission control components
- Heat exchangers and mufflers
- Furnace parts and heat-resistant structures
- Structural components requiring oxidation resistance
- Industrial fabrication and welded assemblies
Reviews
There are no reviews yet.