ASTM A269/213 TP317 GRADE SS SMLS TUBE

ASTM TP317 refers to a specification for 317 stainless steel (UNS S31700), a molybdenum-bearing austenitic stainless steel under standards such as ASTM A240/A240M for plates and sheets. It is designed for applications requiring enhanced corrosion resistance, particularly in chloride-rich environments. This grade contains higher molybdenum (3–4%) compared to 316 stainless steel, improving its performance in aggressive chemical and marine settings

Superior Corrosion Resistance:  Excels in environments with chlorides (e.g., seawater, coastal areas) due to its high molybdenum content, which inhibits pitting and crevice corrosion.

Performs well in sulfuric acid (concentrations <15% and >85%) and organic acids, making it suitable for chemical processing equipment.

 Maintains stability at high temperatures (up to 870°C) and resists scaling in oxidizing atmospheres.

Mechanical Properties: ~520 MPa (as-annealed), with elongation up to 40%, ensuring ductility for forming and welding.

 ≤90 HRB (Rockwell B), balancing strength and machinability.

Thermal Stability: ~16.3 W/m·K at 100°C, increasing to 21.58 W/m·K at 500°C, suitable for heat exchangers.

Linear expansion coefficient of 16×10⁻⁶/K (0–100°C), minimizing dimensional changes under thermal stress.

Weldability: Compatible with standard welding techniques (e.g., TIG, MIG). Post-weld annealing is recommended to restore corrosion resistance in critical applications.

Standard: ASTM A269&A213

O.D: 1/8" NB TO 32" NB , (10.29MM-812.80MM) ,(Customization Available)

W.T: SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)

Application: Chemical & Petrochemical Industries

                        Marine & Offshore

                        Energy & Power Generation

                        Pulp & Paper Industry

                        Medical & Pharmaceutical

End: Plain End, Beveled End, Threaded

Processing: Cut-to-length;Polishing.

                      100% PMI TESTED 

                      EN10204.3.1B MILL TEST CERTIFICATE  

                      THIRD PARTY INSPECTION ACCEPTED

Delivery Condition: Cold Drawn, Annealed and Pickled/ Polished /Bright Annealed/ Sand blasting/ Shot Blasting.

Marking: All SS SMLS Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)

Packing: Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests

Specials: Sizes and Specifications other than above can be customized on request.

CHEMICAL  COMPOSITION - TP317 (ASTM A269&A213)

Mechanical Properties - TP317 (ASTM A269&A213)

Equivalent Grades - (ASTM A269&A213 TP317 Equivalent Grades)

ASTM A269/A269M Standard Cold Machining Size Deviation Permitted