A312 TP316L Stainless Steel Seamless Pipe For Petrochemical Industry
A312 TP316L Stainless Steel Seamless Pipe For Petrochemical Industry
The A312 TP316L stainless steel seamless pipe is a high-performance, corrosion-resistant alloy designed for use in demanding applications. Manufactured to ASTM A312 specifications, it offers excellent mechanical properties, superior corrosion resistance, and a smooth, seamless finish. The "316L" designation indicates that it has a low carbon content, which enhances its weldability and resistance to intergranular corrosion.
Key Features:
- Material Grade: TP316L (Low carbon variant of 316-grade stainless steel).
- Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and chloride-induced stress-corrosion cracking. Suitable for marine, chemical, and industrial environments.
- Seamless Construction: Ensures a smooth internal surface, higher pressure tolerance, and uniform strength.
- Temperature Resistance: Performs well in high-temperature environments.
- Weldability: The low carbon content minimizes carbide precipitation, making it ideal for welding applications without compromising corrosion resistance.
Applications:
- Chemical Processing: Pipes used in handling chemicals, acids, and harsh fluids.
- Petrochemical Industry: Ideal for transportation of petroleum products and gases.
- Food and Beverage: Suitable for food-grade processing and transportation.
- Marine Applications: Due to its excellent resistance to saltwater corrosion.
Mechanical Properties of A312 TP316L Pipes
| Property | Value |
|---|---|
| Tensile Strength (UTS) | Minimum 485 MPa (70,000 psi) |
| Yield Strength (0.2% Offset) | Minimum 170 MPa (25,000 psi) |
| Elongation | Minimum 35% (in 2 inches or 50 mm, depending on the size of the pipe) |
| Hardness | Maximum HRB 95 (Rockwell B) |
Additional Characteristics:
- Density: ~7.99 g/cm³ (Typical for 316L stainless steel).
- Elastic Modulus: ~193 GPa.
- Poisson’s Ratio: ~0.27 - 0.30.
- Thermal Expansion Coefficient: ~16.0 x 10⁻⁶ /K (at 20-100°C).
- Thermal Conductivity: ~16.2 W/m·K (at 100°C).
Chemical Composition of A312 TP316L Stainless Steel
| Element | Composition (% by weight) |
|---|---|
| Carbon (C) | Max 0.03% |
| Chromium (Cr) | 16.0 - 18.0% |
| Nickel (Ni) | 10.0 - 14.0% |
| Molybdenum (Mo) | 2.0 - 3.0% |
| Manganese (Mn) | Max 2.0% |
| Silicon (Si) | Max 0.75% |
| Phosphorus (P) | Max 0.045% |
| Sulfur (S) | Max 0.03% |
| Iron (Fe) | Balance |
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