TP347H Seamless Stainless Steel Tube are high-performance austenitic stainless steel tubes stabilised with niobium, specifically designed for elevated temperature applications and enhanced creep resistance. ① STANDARD: ASTM A213/EN10216-5/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 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.
TP316LN/S31653/1.4429 Seamless Stainless Steel Pipe is a high-performance tubing product known for its excellent corrosion resistance, superior strength, and durability under extreme conditions. 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
654SMO Seamless Super Stainless Steel Pipe is a high-performance, super austenitic stainless steel product known for its exceptional corrosion resistance and high strength. It is an advanced alloy often used in extremely demanding corrosive environments.① STANDARD: ASTM A312/EN10216-5/GBT14976.② OD RANGE : 6-706MM③ THICKNESS RANGE: 1-48MM
TP321 Seamless Stainless Steel Pipe is a titanium-stabilized austenitic tube known for their excellent resistance to intergranular corrosion and superior high-temperature strength. These tubes are ideal for applications requiring stability at elevated temperatures, such as in heat exchangers, aerospace systems, and petrochemical industries. ① STANDARD: ASTM A312/ EN10216-5/ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-1016 MM③ THICKNESS RANGE: 1-65 MM
TP310MOLN/S31050 Seamless Stainless Steel Tube ，310MoLN stainless steel, also known as UNS S31050, is a fully austenitic stainless steel with optimized properties for specific applications. Let’s explore its characteristics and where it finds use in various industries:Urea Plants:310MoLN is specifically designed for applications in urea plants.It provides improved corrosion resistance in urea carbamate environments, such as high-pressure strippers.The nitrogen content in its chemical composition helps stabilize and strengthen the austenitic phase.Chemical Processing:Due to its excellent corrosion resistance, 310MoLN is used in chemical processing equipment.It performs well in aggressive chemical environments, including acids and chlorides.High-Temperature Applications:310MoLN is suitable for high-temperature environments.It finds use in furnace components, such as burners, retorts, and conveyor belts.Petrochemical Industry:In petrochemical plants, 310MoLN is employed for tube hangers.Its resistance to oxidation and high-temperature strength are advantageous.Mineral Equipment and Cement Production:Used in mineral processing equipment and cement production due to its high strength at elevated temperatures.Remember that 310MoLN stainless steel offers a unique combination of properties, making it valuable in critical applications.① STANDARD: ASTM A213/ ASTM A249/ ASTM A269/EN10216-5/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
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