ASTM A213 TP317L Stainless Steel Seamless Pipe

What is ASTM A213 TP317L?

ASTM A213 TP317L is an ultra-low carbon molybdenum-containing austenitic stainless steel seamless pipe, with higher molybdenum content than TP316L, providing enhanced chloride corrosion resistance. It is widely used in harsh corrosive pipelines for chemical, petrochemical and desalination industries.

Equivalent Grades (Horizontal)

UNS: S31703 | JIS: SUS317L | GB: 022Cr19Ni13Mo3 | EN: X2CrNiMo18-14-3 | W.Nr.: 1.4438

Chemical Composition (wt%, Horizontal)

C: ≤0.03 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 18.00-20.00 | Ni: 11.00-15.00 | Mo: 3.00-4.00 | Fe: Balance

Key Properties (20°C, Annealed, Horizontal)

Density: 7.98g/cm³ | Melting Point: 1375-1450°C | Tensile Strength: 485-650N/mm² | Yield Strength: ≥170N/mm² | Elongation: ≥40% | Hardness: ≤217HB

Core Characteristics

• Superior pitting and crevice corrosion resistance, ideal for high-chloride media such as seawater and brine • Ultra-low carbon design eliminates post-weld intergranular corrosion, no need for annealing after welding • Good formability and weldability, easy to process into complex pipeline structures • More durable than TP316L in harsh corrosive environments, with longer service life

TP317L vs TP316L (Horizontal)

Mo Content: 317L (3.00-4.00%) | 316L (2.00-3.00%) | Chloride Resistance: 317L (Superior) | 316L (Good) | Corrosion Scope: 317L (Harsh Corrosion) | 316L (General Corrosion) | Cost: 317L (Higher) | 316L (Lower)

Element	Content (%)
Iron, Fe	Balance
Chromium, Cr	18-20
Nickel, Ni	11-15
Molybdenum, Mo	3-4
Manganese, Mn	2
Silicon, Si	1
Phosphorous, P	0.045
Carbon, C	0.03
Sulfur, S	0.03

 

Stainless Steel Suppliers

If you have project requirements for 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.