ASTM A312 TP316L Austenitic Seamless Stainless Industrial Steel Pipe
Core Chemical Composition (wt%)
Strictly in line with ASTM A312 & TP316L standard, ultra-low carbon formulation for enhanced corrosion resistance, no welding sensitization risk:
| Element |
Chemical Symbol |
Content Range (wt%) |
| Chromium |
Cr |
16.00 - 18.00 |
| Nickel |
Ni |
10.00 - 14.00 |
| Molybdenum |
Mo |
2.00 - 3.00 |
| Carbon |
C |
≤ 0.03 |
| Manganese |
Mn |
≤ 2.00 |
| Silicon |
Si |
≤ 1.00 |
| Phosphorus |
P |
≤ 0.045 |
| Sulfur |
S |
≤ 0.030 |
| Iron |
Fe |
Remainder |
Mechanical Properties Details (Compliant with ASTM A312)
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Yield Strength (0.2% Offset)
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HB |
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Impact Toughness (at 20°C)
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J |
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Superior Performance Characteristics
- Superior All-Round Corrosion Resistance: Molybdenum-enhanced alloy system outperforms 304/304L; highly resistant to pitting, crevice corrosion, intergranular corrosion and general corrosion in chloride-rich, acidic, alkaline, saltwater and harsh chemical media.
- Low-Carbon Welding Advantage: ≤0.03% carbon content eliminates sensitization during welding/thermal processing; no post-weld heat treatment (PWHT) required for most industrial applications, reducing fabrication costs and time.
- Excellent High Pressure & Temperature Performance: Designed for high-pressure piping systems; maintains stable mechanical properties at continuous high temperatures up to 815°C and intermittent use up to 870°C, suitable for high-pressure steam and thermal fluid transfer.
- Outstanding Mechanical Strength: Tensile strength ≥485 MPa, yield strength ≥170 MPa, elongation ≥40%; 100% seamless structure avoids weld seam weaknesses, with higher pressure-bearing capacity and anti-fatigue performance.
- Precise Dimensional Tolerance: Cold drawn/hot finished seamless process, uniform wall thickness, smooth inner/outer surface; low flow resistance, suitable for precision fluid and gas transfer in industrial piping systems.
- Excellent Weldability & Formability: Easy to weld via TIG/MIG/MMA processes; good cold/hot formability for bending, flanging, expanding and threading, adaptable to various on-site fabrication needs.
- Durable & Oxidation Resistant: Resists high-temperature oxidation and chemical aging in harsh industrial environments; no rust or material degradation, significantly reducing maintenance and replacement costs.
- Sanitary Optional Surface: Food-grade polished finish (2B/No.4/8K) available, no heavy metal leaching, meets GMP/3A sanitary standards for food, beverage and pharmaceutical applications.
Additional Product Advantages
- 100% Seamless Structure: No weld seam defects, higher pressure-bearing capacity, anti-fatigue and anti-cracking performance for extreme working conditions.
- Customizable Specifications: Outer Diameter 10mm - 610mm, Wall Thickness 1.0mm - 40mm; cut-to-length, threading, beveling and coating services available as customer requirements.
- Multiple Surface Finishes: Annealed & Pickled (A/P), Bright Annealed (BA), 2B, No.4, 8K Mirror Polished, epoxy coating - match different industrial application scenarios.
- Full Strict Quality Inspection: 100% hydrostatic pressure test, ultrasonic flaw detection (UT), PMI positive material identification, dimensional precision inspection, surface quality test.
