ASTM A312 Grade TP304L pipe is a low-carbon austenitic stainless steel pipe widely used for its excellent corrosion resistance, weldability, and versatility. The “L” grade indicates reduced carbon content, which helps prevent intergranular corrosion after welding, making it especially suitable for fabricated piping systems.
TP304L pipes are available in both seamless and welded forms, and are commonly used in industries requiring reliable performance in corrosive and hygienic environments. Its balanced combination of strength and corrosion resistance makes it one of the most popular stainless steel grades worldwide.
Key Features:
1) Excellent corrosion resistance in mild to moderate corrosive environments
2) Low carbon content minimizes carbide precipitation during welding
3) Superior weldability and formability
4) Durable and cost-effective solution for general-purpose use
ASTM A312 Gr. TP304L Chemical Composition & Mechanical Property:
Chemical Composition |
Chemical Composition, % | TP304L | TP310S | TP316L | TP321 |
C, max | 0.035 | 0.08 | 0.035 | 0.08 |
Mn, max | 2.00 | 2.00 | 2.00 | 2.00 |
P, max | 0.045 | 0.045 | 0.045 | 0.045 |
S, max | 0.030 | 0.030 | 0.030 | 0.030 |
Si, max | 1.00 | 1.00 | 1.00 | 1.00 |
Cr | 18.0-20.0 | 24.0-26.0 | 16.0-18.0 | 17.0-19.0 |
Ni | 8.0-13.0 | 19.0-22.0 | 10.0-14.0 | 9.0-12.0 |
Mo | / | 0.75 max | 2.00-3.00 | / |
N | / | / | / | 0.10 |
Tensile Requirements | TP304L | TP310S | TP316L | TP321 |
Yield Strength (min)
MPa (psi) | 170 (24,700) | 205 (29,700) | 170 (24,700) | 205 (29,700) |
Tensile Strength (min)
MPa (psi) | 485 (70,300) | 515 (74,700) | 485 (70,300) | 515 (74,700) |
General information:
Standard: ASTM A312
Grade: TP304L
Size: OD: 21.3-813mm; WT: 1.0-60mm; L: SRL / DRL / Cut to length
Ends:
1) Beveled ends
2) Plain ends
Available Finishing: annealed & pickled (AP); annealed (BA); polished
Package: Hexagonal bundled with steel strips for small or medium sizes, loose packing for large diameter pipes, plastic caps on both ends, waterproof material wrapped, wooden cases or crates for small sizes or special requirements.
Shipment: Land transportation by truck or train, sea transportation by container shipment or bulk vessel.
Hebei K-Steel Pipe Industry Our advantage:
Flexible Project Customization
We provide tailored manufacturing solutions to meet diverse project requirements, including customized outer diameter, wall thickness, and length specifications. In addition, we offer precision end preparation and a full range of anti-corrosion coating options to ensure optimal performance in various operating environments. This flexibility enables us to deliver line pipe solutions that align seamlessly with your technical and application needs.
Fast & Reliable Lead Time
With strong mill partnerships and readily available inventory resources, we are able to shorten production cycles and respond quickly to urgent project demands. Our integrated supply network ensures stable material availability, efficient scheduling, and on-time delivery — helping clients keep their projects on track without delay.
Advanced Technical & Quality Assurance
Equipped with our own metallurgical laboratories and supported by trusted third-party inspection agencies, we ensure every line pipe meets international standards and project specifications. Comprehensive testing and verification guarantee consistent mechanical properties, chemical composition, and coating integrity, providing clients with reliable, high-quality pipeline solutions.
Rapid Delivery & Complete Logistics
Leveraging fast supply capabilities and a well-established logistics network, we ensure timely delivery of line pipes to any project location. Our streamlined transportation and warehousing system minimize lead time, helping clients maintain smooth operations and meet critical project schedules.
