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Product Advantage:
317L (UNS S31703) is a low-carbon, high-molybdenum austenitic stainless steel designed for enhanced corrosion resistance, particularly pitting and crevice corrosion.
Key Features
Upgraded Chemical Composition
1. High Molybdenum Content (3-4%): Significantly Improves Chloride Ion Corrosion Resistance (Superior to 316L)
2. Low Carbon (≤0.03%): Prevents carbide precipitation in weld zones and resists intergranular corrosion
3. Chromium (~18-20%) + Nickel (~11-15%): Basic Corrosion Resistance and Stable Austenitic Structure
Corrosion Resistance Highlights
1. Strong Resistance to Pitting and Crevice Corrosion (PREN Value ≈ 30-33)
2. Resistant to Sulfuric Acid, Phosphoric Acid, Organic Acids, and Chlorine-Containing Environments
317L/S31703 is an ideal choice for harsh corrosive environments, particularly those containing chloride. Its high molybdenum content fills the performance gap between 316L and super stainless steels such as 904L.
The Chemical Composition
Mo | C | Si | Mn | P | S | Cr | Ni |
3.00-4.00 | ≤0.035 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.0-20.0 | 11.0-15.0 |
Mechanical Properties
Tensile strength(Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) |
≥515 | ≥205 | ≥35 |
Density: 7.98 g/cm³
Product Advantage:
317L (UNS S31703) is a low-carbon, high-molybdenum austenitic stainless steel designed for enhanced corrosion resistance, particularly pitting and crevice corrosion.
Key Features
Upgraded Chemical Composition
1. High Molybdenum Content (3-4%): Significantly Improves Chloride Ion Corrosion Resistance (Superior to 316L)
2. Low Carbon (≤0.03%): Prevents carbide precipitation in weld zones and resists intergranular corrosion
3. Chromium (~18-20%) + Nickel (~11-15%): Basic Corrosion Resistance and Stable Austenitic Structure
Corrosion Resistance Highlights
1. Strong Resistance to Pitting and Crevice Corrosion (PREN Value ≈ 30-33)
2. Resistant to Sulfuric Acid, Phosphoric Acid, Organic Acids, and Chlorine-Containing Environments
317L/S31703 is an ideal choice for harsh corrosive environments, particularly those containing chloride. Its high molybdenum content fills the performance gap between 316L and super stainless steels such as 904L.
The Chemical Composition
Mo | C | Si | Mn | P | S | Cr | Ni |
3.00-4.00 | ≤0.035 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.0-20.0 | 11.0-15.0 |
Mechanical Properties
Tensile strength(Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) |
≥515 | ≥205 | ≥35 |
Density: 7.98 g/cm³
