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- SS SMLS PIPE 2507 ASTM A790
- SS SMLS PIPE 2205 ASTM A790
- SS SMLS PIPE S31803 ASTM A790
- SS SMLS PIPE 904L ASTM A240
- SS SMLS PIPE TP321 ASTM A312
- SS SMLS PIPE TP310S ASTM A312
- SS SMLS PIPE TP316Ti ASTM A312
- SS SMLS PIPE TP316L ASTM A312
- SS SMLS PIPE TP316 ASTM A312
- SS SMLS PIPE TP304L ASTM A312
- SS SMLS PIPE TP304 ASTM A312
China Suppliers of ASTM A269/A213 TP317 Stainless Steel Seamless Tubes - Factory Stock for Fast Delivery
Introduction
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.
Key Features
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.
Material Specification
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.
Inspection
- 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.
Specification Parameters
CHEMICAL COMPOSITION - TP317 (ASTM A269&A213)
| HEAT NO. | CHEMICAL COMPOSITION (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Ni | Cr | Mo | ||
| STAND. | MIN. | 11.00 | 18.00 | 3.0 | |||||
| MAX. | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 15.00 | 20.00 | 4.0 | |
Mechanical Properties - TP317 (ASTM A269&A213)
| Mechanical Properties | |||||
|---|---|---|---|---|---|
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness MAX | |
| Rockwell (HRB) | Brinell (HBW) | ||||
| ASTM A269 TP317 | 90 | 192 | |||
| ASTM A213 TP317 | 515 | 205 | 34 | 90 | 192 |
Equivalent Grades - (ASTM A269&A213 TP317 Equivalent Grades)
| ASTM A269&A213 TP317 Equivalent Grades | ||||
|---|---|---|---|---|
| USA (ASTM /UNS) | Germany (DIN, WNr) | Euronorms (EN) | China (GB) | International (ISO) |
| TP317 S31700 317 |
X5CrNiMo17-13-3 | X5CrNiMo17-13-3 1.4439 |
0Cr19Ni13Mo3 | S31700 03Ch18N14M3 |
ASTM A269/A269M Standard Cold Machining Size Deviation Permitted
| ASTM A269/A269M Standard cold machining size deviation permitted | ||||||
|---|---|---|---|---|---|---|
| Group | Size, Outside Diameter, in. [mm] | Permissible Variations in Outside Diameter, in. [mm] | Permissible Variations in Wall Thickness, A % | Permissible Variations in Cut Length, in. [mm] B | Thin Walled Tubes C | |
| Over | Under | |||||
| 1 | Up to 1/2 [13] | ±0.005 [0.13] | ±15 | 1/8 [3.2] | 0 | ... |
| 2 | 1/2 to 1 1/2 [13 to 38], excl | ±0.005 [0.13] | ±10 | 1/8 [3.2] | 0 | less than 0.065 in. [1.65 mm] nominal |
| 3 | 1 1/2 to 3 1/2 [38 to 89], excl | ±0.010 [0.25] | ±10 | 3/16 [4.8] | 0 | less than 0.095 in. [2.41 mm] nominal |
| 4 | 3 1/2 to 5 1/2 [89 to 140], excl | ±0.015 [0.38] | ±10 | 3/16 [4.8] | 0 | less than 0.150 in. [3.81 mm] nominal |
| 5 | 5 1/2 to 8 [140 to 203], excl | ±0.030 [0.76] | ±10 | 3/16 [4.8] | 0 | less than 0.150 in. [3.81 mm] nominal |
| 6 | 8 to 12 [203 to 305], excl | ±0.040 [1.01] | ±10 | 3/16 [4.8] | 0 | less than 0.200 in. [5.08 mm] nominal |
| 7 | 12 to 14 [305 to 356], excl | ±0.050 [1.26] | ±10 | 3/16 [4.8] | 0 | less than 0.220 in. [5.59 mm] nominal |
Frequently Asked Questions
What is the difference between TP317 and 316 stainless steel?
TP317 contains a higher molybdenum content (3% to 4%) compared to 316 stainless steel (2% to 3%). This higher molybdenum level provides superior resistance to pitting and crevice corrosion, particularly in aggressive chloride environments and marine settings.
What are the primary applications for ASTM TP317?
Due to its high corrosion resistance, ASTM TP317 is widely utilized in the Chemical & Petrochemical Industries, Marine & Offshore settings, Energy & Power Generation, the Pulp & Paper Industry, and Medical & Pharmaceutical manufacturing.
What are the mechanical properties of ASTM A213 TP317?
ASTM A213 TP317 features a minimum tensile strength of 515 MPa, a minimum 0.2% proof yield strength of 205 MPa, and a minimum elongation of 34%. It has a maximum hardness limit of 90 HRB (Rockwell B) or 192 HBW (Brinell).
Is post-weld heat treatment necessary for TP317?
While TP317 is compatible with standard welding methods such as TIG and MIG, post-weld annealing is recommended for critical applications to restore optimal corrosion resistance in the heat-affected zone.
What equivalent global grades correspond to ASTM TP317?
Equivalent grades to ASTM TP317 include UNS S31700 (USA), X5CrNiMo17-13-3 (Germany / Euronorms), 1.4439 (Euronorms), 0Cr19Ni13Mo3 (China), and 03Ch18N14M3 (International ISO).