ASTM A276 Stainless Steel 317L Round Bars
The 317L stainless steel round bar is a low-carbon, molybdenum-bearing austenitic stainless steel that provides superior resistance to corrosion, especially in acidic and chloride-rich environments. Thanks to its excellent strength, weldability, and high-temperature performance, it is widely used in chemical processing, marine, and power generation industries.
Stainless steel grade 317L is a low carbon version of grade 317 stainless steel. It has the same high strength and corrosion resistance as 317 steel but can produce stronger welds due to the low carbon content
Character of 317L Stainless steel
- Superior corrosion resistance over 316/316L stainless steel.
- Increased molybdenum content aids in pitting and chemical corrosion resistance.
- The 317L variant’s reduced carbon content ensures better weldability and formability.
- Non-magnetic in the annealed state and not hardenable by heat treatment.
- Ideal for demanding environmental conditions.
317/317L Stainless Steel Physical Properties
| Material Type | Condition | Tensile Strength (PSI) |
Yield Strength (PSI) |
Elongation (% in 2in.) |
|
|---|---|---|---|---|---|
| 317/317L | Annealed | 75,000 minimum | 30,000 minimum | 30-45% minimum |
317L Stainless Steel Round Bar Specifications
- Standard Specifications: ASTM A276, ASTM A479, ASME SA276, ASME SA479
- Material Grade: 317L (UNS S31703)
- Diameter Range: 6mm – 500mm (or as per customer requirements)
- Length: 1 meter – 6 meters (custom lengths available)
- Finish Options: Black, Bright, Polished, Peeled, Turned, Ground
- Tolerances: As per ASTM A484 or customer specifications
Chemical Composition of 317L Stainless Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 11.0 – 15.0 |
| Molybdenum (Mo) | 3.0 – 4.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties of 317L Stainless Steel
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa (75,000 psi) |
| Yield Strength (0.2% Offset) | ≥ 205 MPa (30,000 psi) |
| Elongation | ≥ 35% |
| Hardness | ≤ 95 HRB |
Applications of SS317L round bar.
- Applications: Heat exchangers, pressure vessels, chemical tanks, offshore platforms, pulp & paper processing, and food processing equipment.
Difference Between 316L and 317L Stainless Steel
Both 316L and 317L are austenitic stainless steels with low carbon content, commonly used in corrosion-resistant applications. However, 317L contains more molybdenum, giving it superior corrosion resistance, especially in highly acidic and chloride-rich environments.
Key Differences Between 316L and 317L
| Property | 316L Stainless Steel | 317L Stainless Steel |
|---|---|---|
| UNS Number | S31603 | S31703 |
| Molybdenum (Mo) Content | 2.0 – 3.0% | 3.0 – 4.0% |
| Chromium (Cr) Content | 16.0 – 18.0% | 18.0 – 20.0% |
| Nickel (Ni) Content | 10.0 – 14.0% | 11.0 – 15.0% |
| Corrosion Resistance | Good resistance to corrosion and oxidation | Superior corrosion resistance, especially against pitting and crevice corrosion |
| Strength & Durability | High strength and toughness | Slightly higher strength and better performance in extreme conditions |
| Applications | Marine, food processing, medical devices, chemical processing | Chemical plants, marine structures, pulp & paper industry, acidic environments |
| Cost | More affordable | Slightly more expensive due to higher molybdenum content |
Are you looking for high-quality 317L stainless steel round bars? Contact us today for the best prices and delivery.
