At Solitaire Fittings, we are a trusted Stainless Steel 446 Buttweld Fittings Manufacturer & Supplier in Mumbai, India, offering precision-engineered products designed to meet global industrial standards. Our Stainless Steel 446 Buttweld Fittings are known for their exceptional resistance to oxidation, corrosion, and high-temperature scaling. These fittings are widely used in heat exchangers, furnace components, and exhaust systems — where performance and reliability matter the most.
We specialize in manufacturing a complete range of ASTM A403 WP446 fittings, including SS 446 Elbows, Tees, Reducers, Caps, Stub Ends, and Cross Fittings, available in various shapes and sizes to meet your exact specifications.
What is Stainless Steel 446?
Stainless Steel 446 is a high-chromium ferritic stainless steel with excellent resistance to oxidation and sulfidation, especially at elevated temperatures up to 1100°C. This grade is part of the 400-series stainless steels and is magnetic in nature. It offers outstanding corrosion resistance in environments containing sulfur gases and high-temperature oxidizing conditions.
The material is designated as UNS S44600 and WERKSTOFF NR. 1.4762, and it conforms to ASTM A403 / ASME SA403 standards for buttweld fittings.
Because of its high chromium content (around 26%), SS 446 pipe fittings are ideal for high-temperature applications such as furnaces, power generation, petrochemical plants, and heat treatment industries.
Types of Stainless Steel 446 Buttweld Fittings We Offer
We manufacture and supply all types of ASTM A403 WP446 fittings, each designed to perform under specific temperature and pressure conditions.
➤ ASTM A403 446 SS Pipe Elbow / SS 1.4762 Buttweld Elbow
Our SS 446 elbows are used to change the direction of flow in piping systems. Available as long radius (LR), short radius (SR), and 5D elbows, they ensure smooth flow with minimal pressure drop.
- Variants: 45°, 90°, and 180° elbows
- Grades: SS UNS S44600, SS WERKSTOFF NR. 1.4762, SUS 446
- Applications: Heat exchangers, power plants, exhaust ducts
➤ 446 Stainless Steel Reducer / Stainless Steel S44600 Buttweld Pipe Reducer
We offer concentric and eccentric reducers in 446 stainless steel to connect pipes of different diameters. These 446 SS reducers ensure smooth fluid transition and reduce turbulence within pipelines.
- Used in industries requiring high temperature and pressure control.
➤ SS 446 Equal Tee / ASME SA403 Stainless Steel Tees
Our SS 446 equal tees distribute flow evenly from one pipe into two branches. These fittings are precisely manufactured to maintain accurate dimensions and wall thickness.
- Standards: ANSI B16.9, ASTM A403
- Applications: Power generation, chemical industries, and furnace systems
➤ Stainless Steel 446 Pipe Cap / SS 446 Pipe Cap Stockist
We supply SS 446 pipe caps to seal the end of a pipe, protecting it from contamination and damage. These caps also help maintain internal pressure and prevent leakage during system shutdowns.
➤ Stainless Steel 446 Stub End / Stainless Steel 446 Stub End Exporter in India
Our stub ends are manufactured as per ASME SA403 standards and are used with lap joint flanges. They allow easy inspection and replacement without disturbing the pipe alignment.
➤ SS 446 Cross / ASME SA 403 SS 446 Pipe Bend
We produce SS 446 cross fittings for multi-branch connections and pipe bends for smooth directional flow changes. These fittings ensure durability, dimensional accuracy, and corrosion resistance even under high temperature and pressure.
Features & Advantages of Stainless Steel 446 Buttweld Fittings
Choosing ferritic stainless steel 446 fittings provides several unique benefits, making them a popular choice among engineers and project designers:
- High Oxidation Resistance – Performs exceptionally well in oxidizing atmospheres up to 1100°C.
- Superior Sulfidation Resistance – Excellent resistance in environments containing sulfur compounds.
- Magnetic Nature – Allows easy detection and testing in various industrial processes.
- Low Thermal Expansion – Offers dimensional stability at high operating temperatures.
- Good Thermal Conductivity – Helps in efficient heat transfer applications.
- Excellent Fabrication – Suitable for welding, forming, and bending operations.
- Cost-Effective Option – Provides high temperature performance at an economical cost compared to nickel alloys.
These qualities make Stainless Steel 446 Buttweld Fittings a reliable solution for high-heat and corrosive environments.
Manufacturing Standards and Specifications
Our ANSI B16.9 Stainless Steel 446 Butt weld Fittings are manufactured in compliance with the following standards:
- Standards: ASTM A403 / ASME SA403
- Dimensions: ASME B16.9, B16.28, MSS SP-43
- Sizes: ½” NB to 48” NB
- Schedules: SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS
- Forms: Elbow, Tee, Reducer, Cap, Stub End, Cross, Pipe Bend
We use cutting-edge manufacturing equipment and a rigorous quality control process to ensure each SS UNS S44600 pipe fitting meets international quality standards.
Applications of Stainless Steel 446 Buttweld Fittings
Because of their excellent resistance to heat and corrosion, Stainless Steel 446 Buttweld Fittings are extensively used in industries that operate under extreme temperature and oxidation conditions.
- Heat exchangers and furnaces
- Gas turbines and exhaust systems
- Power generation plants
- Chemical processing equipment
- Petrochemical refineries
- Boiler and heater tubes
- Thermal oxidizers
- Industrial incinerators
Their long service life, mechanical strength, and resistance to scaling make them a cost-effective and dependable choice.
Equivalent Grades of Stainless Steel 446
| STANDARD | GRADE |
|---|---|
| UNS | S44600 |
| WERKSTOFF NR. | 1.4762 |
| ASTM / ASME | A403 / SA403 WP446 |
| JIS | SUS 446 |
| EN | X10CrAl24 |
Mechanical Properties of Stainless Steel 446 Buttweld Fittings
| Property | Value |
|---|---|
| Tensile Strength | 485 MPa (min) |
| Yield Strength | 275 MPa (min) |
| Elongation | 20% min |
| Hardness | 217 (max) |
Chemical Composition of Stainless Steel 446
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 23.0 – 27.0 |
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | ≤ 1.50 |
| Silicon (Si) | ≤ 1.00 |
| Nickel (Ni) | ≤ 0.50 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Why Choose Us for Stainless Steel 446 Buttweld Fittings?
As a reputed Stainless Steel 446 Buttweld Fittings Manufacturer & Supplier, we take pride in offering products that combine quality, precision, and reliability. Here’s why customers across India and abroad trust us:
- Extensive Stock Availability – Large inventory of fittings in different sizes and pressure ratings.
- Strict Quality Control – Each product undergoes visual inspection, PMI testing, and dimensional checks.
- Global Export Standards – We export to Middle East, Africa, and European markets with full certification.
- Customized Solutions – Fabrication available as per client drawings and special material requirements.
- On-Time Delivery – Efficient logistics ensure timely dispatch to every project site.
Let’s Find Your Fitting Solution
Stainless Steel 446 Buttweld Fittings are a perfect combination of durability, strength, and corrosion resistance. Designed for demanding high-temperature operations, these fittings provide long-lasting performance in industrial environments where ordinary steels fail.
As one of the leading Stainless Steel 446 Pipe Fittings Suppliers in Mumbai, India, we offer quality that you can trust and performance you can rely on. Whether you need ASTM A403 446 SS Pipe Elbows, SS 446 Equal Tees, Stainless Steel 446 Stub Ends, or 446 SS Reducers, we ensure top-grade materials, competitive pricing, and timely delivery — every time.
Request Your Stainless Steel 446 Buttweld Fittings Quote Today!
