Stainless Steel 446 Pipe Manufacturer, Supplier & Exporter
Leading Stainless Steel 446 Pipe Manufacturer and Global Supplier
We are leading Stainless Steel 446 Pipe Manufacturers providing excellent quality pipes to the customers demanding excellent oxidation resistance and strength at elevated temperature. We supply seamless tubing, fabricated tubes, welded pipes and fabricated pipes of stainless steel 446 in following types, sizes and standards. We offer custom size pipes to our customers depending on their needs in different lengths.
As a responsible ASTM A312 TP446 Pipe Suppliers in USA and UNS S44600 Seamless Pipe Exporter in India, we deal with industries such as oil and gas, petrochemical, power, chemical, cement and thermal engineering. We are known for delivering precise and durable stainless steel 446 pipes made with the help of finest raw materials and strict quality checks.
What is Stainless Steel 446 Pipe?
Stainless Steel 446 Pipe is a ferritic stainless steel pipe with high chromium. It has high performance in oxidation resistance, scaling resistance, corrosion resistance at high temperature environments. With the approximate 23-27% chromium, the Stainless Steel 446 Pipe is a stable steel with working temperature up to 1100 C in furnaces, heat treatment equipment, petrochemical plant, power generation plant and industrial processes equipment. It is available with seamless, welded, ERW and fabricated and shows outstanding service life in conditions which common stainless steel cannot stand.
Stainless Steel 446 pipe Properties
One of the standout features of 446 stainless steel is its remarkable resistance to oxidation at temperatures up to 1100°C (2012°F). Here are some key properties of 446 stainless steel:
- High Chromium Content: With 23-27% chromium, 446 stainless steel offers excellent resistance to oxidation and scaling, even in extreme temperatures.
- Ferritic Structure: The ferritic nature of 446 stainless steel ensures good mechanical properties and moderate corrosion resistance.
- Non-Hardenable: This alloy cannot be hardened by heat treatment, making it suitable for applications that require stability under thermal cycling.
- Good Weldability: 446 stainless steel can be easily welded using conventional methods, although it is advisable to use preheating and post-weld heat treatment to avoid cracking.
ASTM A312 TP446 Seamless Tubing and Pipe Products We Supply
Our inventory includes a complete range of stainless steel 446 products manufactured to meet industrial requirements.
ASTM A312 TP446 Seamless Tubing
ASTM A312 TP446 Seamless Tubing is manufactured without weld joints, providing enhanced pressure-bearing capability and superior structural integrity. These tubes are widely used in high-temperature processing systems and critical industrial applications.
UNS S44600 Seamless and Welded Pipe
UNS S44600 Seamless and Welded Pipe products offer excellent oxidation resistance and mechanical stability under continuous thermal cycling. Both seamless and welded variants are available to suit diverse project requirements.
UNS S44600 ERW Pipe Supplier in India
As a dependable UNS S44600 ERW Pipe Supplier in India, we provide electric resistance welded pipes manufactured with strict dimensional control and quality assurance procedures. ERW pipes are widely preferred for cost-effective industrial piping installations.
ASTM A268 TP446 Pipes and Tubes
We also supply ASTM A268 TP446 Pipes and ASTM A268 TP446 Tubes for heat exchanger systems, furnace applications, thermal processing equipment, and high-temperature fluid transportation.
Types of Stainless Steel 446 Pipes
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SS 446 Seamless Pipes
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UNS S44600 ERW Pipe Supplier in India
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ASTM A358 Stainless Steel 446 EFW Pipe Manufacturer in India
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SS 446 ERW Pipes
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INOX 446 ERW Pipe
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ASME SA 358 SS 446 Welded Pipes
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SS 446 Welded-Diameter Pipes Supplier in India
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Stainless Steel 1.4762 Welded Pipes
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SS DIN 1.4762 Rectangular Welded Pipes Exporters
Our welded and seamless pipes are manufactured using advanced technology and tested under stringent quality control processes to ensure durability, strength, and dimensional accuracy.
Schedule and Size Chart for Stainless Steel 446 pipe
| Schedule | Nominal Pipe Size (NPS) | Outside Diameter (OD) (mm) | Wall Thickness (mm) | Inside Diameter (ID) (mm) |
| 10 | 1/2″ | 21.34 | 1.65 | 18.04 |
| 10 | 3/4″ | 26.67 | 1.65 | 23.37 |
| 40 | 1/2″ | 21.34 | 2.77 | 15.80 |
| 40 | 3/4″ | 26.67 | 2.87 | 20.93 |
| 80 | 1/2″ | 21.34 | 3.73 | 13.84 |
| 80 | 3/4″ | 26.67 | 3.91 | 18.85 |
Mechanical Properties Chart for 446 Stainless Stee Pipe
| Property | Value |
| Tensile Strength | 450 MPa (min) |
| Yield Strength | 275 MPa (min) |
| Elongation | 20% (in 50 mm) |
| Hardness | 217 HB (max) |
| Impact Resistance | High at elevated temperatures |
Stainless Steel 446 Pipe Specifications
| Specification | Details |
| Material Grade | Stainless Steel 446 |
| UNS Number | UNS S44600 |
| ASTM Standards | ASTM A312, ASTM A268 |
| Pipe Type | Seamless, Welded, ERW, Fabricated |
| Size Range | 1/8″ NB to 48″ NB |
| Wall Thickness | SCH 5 to SCH XXS |
| Form | Round, Square, Rectangular |
| Length | Single Random, Double Random, Cut Length |
| End Type | Plain End, Beveled End, Threaded End |
| Surface Finish | Annealed, Pickled, Polished |
Chemical Composition Chart SS 446 pipe
| Element | Composition (%) |
| Chromium | 23.0 – 27.0 |
| Manganese | 1.50 (max) |
| Silicon | 1.00 (max) |
| Carbon | 0.20 (max) |
| Phosphorus | 0.04 (max) |
| Sulfur | 0.03 (max) |
| Nickel | 0.50 (max) |
| Iron | Balance |
Physical Properties Chart 446 SS pipe
| Property | Value |
| Density | 7.75 g/cm³ |
| Melting Point | 1480°C |
| Thermal Conductivity | 19.2 W/m·K at 100°C |
| Specific Heat Capacity | 460 J/kg·K at 20°C |
| Electrical Resistivity | 750 µΩ·cm at 20°C |
Key Features of 446 Stainless Steel Pipe
Exceptional High-Temperature Resistance
One of the biggest advantages of 446 Stainless Steel Pipe is its ability to withstand extremely high temperatures while maintaining structural integrity.
Outstanding Oxidation Resistance
The elevated chromium content forms a stable oxide layer that protects the material from scaling and oxidation.
Superior Corrosion Protection
The alloy demonstrates excellent resistance to sulfur-containing atmospheres, combustion gases, and industrial chemicals.
Long Service Life
Its durability reduces maintenance costs and minimizes downtime in industrial systems.
Cost-Effective Performance
Compared to nickel-based alloys, stainless steel 446 provides excellent high-temperature performance at a more economical cost.
Applications of ASTM A312 TP446 Pipe
Due to its exceptional heat resistance and oxidation performance, ASTM A312 TP446 Pipe is extensively used across various industries.
Power Generation Plants
- Boiler systems
- Superheater tubing
- Flue gas systems
- Heat recovery units
Petrochemical Industry
- Thermal processing units
- High-temperature pipelines
- Reformer systems
Heat Treatment Facilities
- Furnace components
- Annealing equipment
- Kiln systems
Cement Industry
- High-temperature conveying systems
- Exhaust ducts
- Processing equipment
Chemical Processing Plants
- Corrosive fluid transportation
- Reactor systems
- Industrial exhaust lines
Manufacturing Process of Stainless Steel 446 Pipe
The production process begins with premium-grade stainless steel raw material sourced from approved mills. The material undergoes forming, welding (for welded products), sizing, straightening, heat treatment, pickling, and finishing operations.
Each batch is subjected to extensive quality checks including:
- Chemical analysis
- Mechanical testing
- Hydrostatic testing
- Eddy current testing
- PMI testing
- Dimensional inspection
- Visual examination
This ensures every pipe meets ASTM and international quality requirements before shipment.
Frequently Asked Questions (FAQ) What is the UNS number for Stainless Steel 446?
The UNS designation for Stainless Steel 446 is UNS S44600.
What is ASTM A312 TP446 Pipe used for?
ASTM A312 TP446 Pipe is primarily used in high-temperature environments such as furnaces, boilers, heat treatment equipment, and petrochemical processing systems.
Is Stainless Steel 446 suitable for high-temperature applications?
Yes. Stainless Steel 446 offers outstanding oxidation resistance and can operate continuously at temperatures approaching 1100°C.
What is the difference between seamless and welded TP446 pipe?
Seamless pipes are manufactured without weld seams and generally offer higher pressure resistance, while welded pipes provide a cost-effective solution for many industrial applications.
What standards apply to 446 stainless steel pipes?
The most common standards include ASTM A312 TP446 Pipe, ASTM A268 TP446 Pipes, and related international specifications.
Request a Quote for Stainless Steel 446 Pipe
Looking for a reliable Stainless Steel 446 Pipe Manufacturer, ASTM A312 TP446 Pipe Suppliers in USA, or UNS S44600 Seamless Pipe Exporter in India?
Contact our technical team today for pricing, stock availability, custom dimensions, project requirements, and worldwide shipping support. We help industries source high-performance stainless steel piping solutions that meet stringent quality and performance standards.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality stainless steel 446 pipes. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
