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ASTM A376 TP316H Stainless Steel Seamless Pipe with Molybdenum Alloying and Creep Resistance
| MOQ: | 5Ton |
| Price: | Based on grade, size, surface, processing, quantity and current raw material market price. |
| Standard Packaging: | Standard seaworthy export packing with bundles, waterproof wrapping, pallets or wooden cases. |
| Delivery Period: | 7-15 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| Supply Capacity: | Stock supply, regular production and custom manufacturing available. |
Shaanxi Shangyou Stainless Steel Co., Ltd. supplies ASTM A376 TP316H stainless steel seamless pipe for global distributors, EPC contractors, power plant engineers and project procurement teams. Manufactured to ASTM A376/A376M standards, TP316H seamless pipe delivers enhanced creep resistance, oxidation resistance and long-term structural integrity for power generation, boiler systems, superheaters and heat exchangers.
ASTM A376 was originally developed for piping in central stations of electric-power generating thermal plants. TP316H is a modification of standard TP316 grade with controlled higher carbon content (0.04-0.10% vs 0.08% maximum for TP316), specifically intended for service at temperatures where creep and stress rupture properties are critical. The molybdenum addition (2-3%) provides superior resistance to pitting and crevice corrosion in chloride-containing environments compared to TP304H. At 700°C, TP316H offers approximately 33% higher creep rupture strength than standard TP316. All pipe is furnished in the solution annealed condition with minimum solution treatment temperature of 1900°F [1040°C] and grain size of Grade 7 or coarser.
| Parameter | Available Specification |
|---|---|
| Product Standard | ASTM A376/A376M, ASME SA376 |
| UNS Designation | S31609 |
| Dimensional Standard | ASME B36.10, ASME B36.19 |
| OD Range | NPS 1/4" to NPS 30+ (6 mm to 610+ mm) |
| Wall Thickness | Schedules 5S to XXS |
| Length | Standard 6m or Customized |
| End Types | Plain End, Beveled End |
| Surface Finish | Pickled, Annealed |
| Heat Treatment | Solution Annealed (min 1900°F/1040°C) |
| Grain Size | Grade 7 or coarser |
| Inspection Tests | Hydrostatic, Eddy Current, Tension, Flattening |
| Documents | MTC 3.1, Inspection Reports, Packing List |
| Parameter | TP316H Specification |
|---|---|
| Carbon (C) | 0.04 – 0.10% |
| Chromium (Cr) | 16.0 – 18.0% |
| Nickel (Ni) | 10.0 – 14.0% |
| Molybdenum (Mo) | 2.00 – 3.00% |
| Manganese (Mn) | ≤ 2.00% |
| Silicon (Si) | ≤ 1.00% |
| Tensile Strength (min) | 515 MPa |
| Yield Strength (min) | 205 MPa |
| Elongation (min) | 35% |
ASTM A376 TP316H seamless pipe is specified for high temperature service conditions requiring both creep strength and chloride corrosion resistance.
Typical applications include:
- Electric power generating thermal plants (boiler piping, superheaters, reheaters)
- High temperature heat exchangers and condensers
- Petrochemical and refinery furnace piping
- High temperature process piping
- Power generation components (600-870°C service range)
When selecting TP316H seamless pipe, buyers should consider:
Temperature and Creep Requirements: TP316H is designed for service above approximately 500-550°C where creep strength is critical. At 700°C, 1000h creep rupture strength is ≥80MPa, approximately 33% higher than standard TP316.
Corrosion Environment: The 2-3% molybdenum content provides significantly better resistance to pitting and crevice corrosion in chloride environments compared to non-molybdenum grades. For general corrosive service without high temperature requirements, consider TP316L for as-welded applications.
Post-Weld Heat Treatment: TP316H is more prone to intergranular corrosion after welding than 316L. Post-weld annealing is often required to restore corrosion resistance, and welding should use lower heat input to avoid grain coarsening.
Grain Size: ASTM A376 requires TP316H to have a grain size of Grade 7 or coarser, which contributes to improved high-temperature stability and creep resistance.
ASTM A376 TP316H seamless pipes are packed with export-standard protection including plastic wrapping, edge protection, steel strapping and wooden cases or steel frames. Packaging can be adjusted according to pipe size, weight and shipping requirements.
Quality documents may include MTC 3.1, inspection reports, packing lists and other agreed certificates. PMI/OES (XRF) can identify Cr, Ni, Mo, but cannot independently confirm L/H carbon level differences—refer to MTC for complete verification.
For quality evaluation, customers should provide heat number, package identification, inspection records and product photos. Technical solutions will be provided according to specifications and contract requirements.
Need ASTM A376 TP316H Stainless Steel Seamless Pipe for power generation, boiler systems or high temperature chloride environments?
Send your requirements including grade, OD/wall thickness, schedule, length, temperature conditions and quantity. Shangyou Stainless Steel provides customized processing, third-party inspection and export solutions for global B2B customers.
