TP347H Seamless Stainless Steel Pipe are high-performance austenitic stainless steel tubes stabilised with niobium, specifically designed for elevated temperature applications and enhanced creep resistance. ① STANDARD: ASTM A312/ ASTM A249/ ASTM A269/ EN10216-5/GOST 9940 /GOST 9941...② OD RANGE : 6-1016 MM③ THICKNESS RANGE: 1-65 MM
|
Grade |
C |
Cr |
Ni |
Mn |
P |
S |
Si |
Other |
|
347 |
≤0.08 |
17.00-19.00 |
9.00-13.00 |
≤2.00 |
≤0.035 |
≤0.030 |
≤1.00 |
Nb≥10*C% |
|
347H |
0.04-0.10 |
17.00-19.00 |
9.00-13.00 |
≤2.00 |
≤0.035 |
≤0.030 |
≤1.00 |
Nb≥8*C% |
|
Grade |
Yield strength ksi(MPa) |
Tensile Strength ksi(MPa) |
Elongation % |
Hardness Brinell/Vickers |
Hardness Rockwell |
|
347 |
≥30(205) |
≥75(515) |
≥35 |
≤192 HBW/200HV |
≤90HRB |
|
347H |
≥30(205) |
≥75(515) |
≥35 |
≤192 HBW/200HV |
≤90HRB |
Type 347H is a high carbon austenitic chromium stainless steel. Found in applications that demand high temperature resistance, other major design features include:
1. Similar resistance and corrosion protection as 304
2. Used for heavy welded equipment when annealing is not possible.
3. Good oxidation resistance, on par with most other austenitic stainless steels
4. Higher carbon allows for better high temperature creep properties.
The “H” in 347H stands for “high carbon” content. This variety of stainless steel has higher amounts of carbon than standard 347 stainless steel, with increased tensile strength and creep resistance at elevated temperatures. Due to its higher carbon content, this type of stainless steel provides better stress rupture properties than the standard version. It also offers excellent resistance to oxidation in intermittent service up to 1600F and continuous service up to 1700 degrees F.
Both steels are non-magnetic and can be used in applications where magnetism is a concern.
347h is more expensive than 347 due to its higher carbon content.
Applications for both steels include aerospace, chemical processing, oil and gas, and power generation.
TP316Ti Seamless Stainless Steel Pipe is a high-performance tubing solutions known for their excellent resistance to corrosion, heat, and mechanical stress. These tubes are specially alloyed with titanium to enhance strength and stability at elevated temperatures, making them suitable for demanding environments. ① STANDARD: EN10216-5/ASTM A312/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-1016 MM③ THICKNESS RANGE: 1-65 MM
With a strong focus on precision and industry-leading standards, we ensure each stainless steel 314 seamless tube meets the highest performance. We utilize advanced manufacturing processes, including strict quality checks and annealing techniques, to guarantee durability and reliability. We have the largest inventory of providing quick access to a range of sizes and specifications for diverse industrial applications. With a commitment to excellence, our tubes are manufactured in accordance with international certifications, ensuring compliance with global standards. These seamless tubes are commonly used in heat exchangers, high-temperature furnaces, and other critical applications where corrosion resistance and high strength are essential. Our UNS S31400 tubes are also equivalent to global standards, ensuring compatibility across various markets.① STANDARD: ASTM A213/ EN10216-5/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
TP317L Seamless Stainless Steel Pipe is a premium-grade, low-carbon, molybdenum-alloyed austenitic tube designed for superior corrosion resistance in aggressive environments. ① STANDARD: ASTM A312/ ASTM A249/ ASTM A269/ EN10216-5/GOST 9940 /GOST 9941...② OD RANGE : 6-1016 MM③ THICKNESS RANGE: 1-65 MM
254SMO Seamless Stainless Steel Tube is a high-performance tubing solution designed for extreme environments, offering exceptional resistance to corrosion, pitting, and acidic conditions—ideal for marine, chemical, and offshore applications. ① STANDARD: ASTM A213/ ASTM A249/ ASTM A269/ ASTMA270/EN10216-5/GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
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