ASTM A213 TP309S Stainless Steel Seamless Pipe

What is ASTM A213 TP309S?

ASTM A213 TP309S is a high-chromium and nickel austenitic stainless steel seamless pipe, specifically engineered for excellent high-temperature oxidation resistance. It is widely applied in high-temperature industrial equipment such as boiler superheaters, heat exchanger tubes and furnace components.

Equivalent Grades (Horizontal)

UNS: S30908 | JIS: SUS309S | GB: 06Cr23Ni13 | EN: X5CrNi23-12 | W.Nr.: 1.4828

Chemical Composition (wt%, Horizontal)

C: ≤0.08 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 22.00-24.00 | Ni: 12.00-15.00 | Fe: Balance

Key Properties (20°C, Annealed, Horizontal)

Density: 7.98g/cm³ | Melting Point: 1400-1450°C | Tensile Strength: ≥515N/mm² | Yield Strength: ≥205N/mm² | Elongation: ≥40% | Hardness: ≤217HB

Core Characteristics

• Outstanding oxidation resistance at high temperatures (up to 1050°C), suitable for long-term service in high-temperature oxidizing atmospheres • Reliable high-temperature creep strength, not easy to deform under continuous high-temperature stress • Excellent weldability and formability, easy to process into various structural tubes • More cost-effective than TP310S, ideal for medium-high temperature non-severe corrosion scenarios

TP309S vs TP310S (Horizontal)

Cr Content: 309S (22.00-24.00%) | 310S (24.00-26.00%) | High-Temp Service Limit: 309S (≤1050°C) | 310S (≤1150°C) | Oxidation Resistance: 309S (Excellent) | 310S (Superior) | Cost: 309S (Lower) | 310S (Higher)

Element	309	309S	309H
Chromium	22.0 min.-24.0 max.	22.0 min.-24.0 max.	22.0 min.-24.0 max.
Nickel	12.0 min.-15.0 max.	12.0 min.-15.0 max.	12.0 min.-15.0 max.
Carbon	0.20	0.08	0.04 min.-0.10 max.
Manganese	2.00	2.00	2.00
Phosphorus	0.045	0.045	0.045
Sulfer	0.030	0.030	0.030
Silicon	0.75	0.75	0.75
Iron	Balance	Balance	Balance

 

304 Stainless Steel Suppliers

If you have project requirements for 304 stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.