ASTM A312 TP347H Stainless Steel Seamless Pipe 6" SCH40 with Columbium Stabilization for High Temperature Applications
Price:
800 - 9000 USD / ton
MOQ:
5T
Delivery Time:
60-75days
Brand:
HDT
Product Description
Product Overview
ASTM A312 TP347H Stainless Steel Seamless Pipe with pickled and annealed finish, available in 6" SCH40 dimensions. This stabilized austenitic stainless steel offers superior performance in high-temperature applications.
Material Properties
347 Stainless Steel is an enhanced variant of 18/8 Grade 304 with added columbium for stabilization. This eliminates carbide precipitation and prevents intergranular corrosion, making it ideal for demanding industrial environments.
Key Benefits
- Higher creep stress and rupture properties compared to 304 stainless steel
- Ideal for high temperature service up to 1500°F (816°C)
- Eliminates sensitization and intergranular corrosion concerns
- Certified for ASME Boiler and Pressure Vessel Code applications
- Superior overall corrosion resistance compared to 304/304L
- Excellent mechanical properties and cryogenic toughness
- Available in high carbon version (347H) for enhanced strength
Applications
- Heat exchangers and condensers
- High temperature steam service systems
- Chemical processing equipment at elevated temperatures
Product Specifications
Standards & Certifications
ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V, ASTM A789/A790
Size Range
Seamless: 1/2" NB - 24" NB
ERW: 1/2" NB - 24" NB
EFW: 6" NB - 100" NB
Wall Thickness
Schedule 5S - Schedule XXS (custom heavier walls available)
Additional Testing
NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE
Chemical Composition
| Element | 347 Composition |
|---|---|
| Carbon* | 0.08 |
| Manganese | 2.00 |
| Phosphorus | 0.045 |
| Sulfur | 0.03 |
| Silicon | 0.75 |
| Chromium | 17.00-19.00 |
| Nickel | 9.00-13.00 |
| Columbium + Tantalum** | 10xC min to 1.00 max |
Technical Features
Corrosion Resistance
Excellent resistance to general corrosion and intergranular attack. Alloy 347 provides superior performance in strongly oxidizing environments and maintains integrity after prolonged high-temperature exposure.
Heat Treatment
Annealing temperature range: 1800 to 2000°F (928 to 1093°C). Stress relief annealing within 800 to 1500°F (427 to 816°C) range does not cause susceptibility to intergranular attack.
Certifications
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Location
Rm. 1202, Buildiing A, Wanda Plaza, Zhangjiagang, Jiangsu, China
Contact Person
Yolanda Zou