Amardeep Steel Center stands as a distinguished manufacturer, supplier, and exporter of high-performance Stainless Steel 304H Butt weld Fittings. Specifically engineered for superior strength and creep resistance at elevated temperatures, our fittings are the definitive choice for demanding applications in power generation, petroleum refining, and chemical processing. We offer a complete portfolio of ASTM A403 WP304H Fittings, including elbows, tees, and reducers, all manufactured to exceed the strictest international quality standards. With a legacy of precision engineering and a commitment to customer success, we deliver robust solutions that guarantee the integrity and longevity of high-temperature piping systems.
What Are Stainless Steel 304H Butt Weld Fittings?
Stainless Steel 304H Butt weld Fittings are a specialized grade of pipe connectors designed for high-temperature service. Like standard fittings, they are used to change direction, branch, or join piping sections via a butt-welding process, which creates a strong, contiguous metal structure.
The "H" in 304H designates "High Carbon." This grade is a modification of the standard "18/8" austenitic stainless steel, but with a controlled carbon content in the range of 0.04% to 0.10%. This higher carbon level is the key to its enhanced performance at temperatures above 525°C (975°F). Here's why it matters:
- Superior High-Temperature Strength: The increased carbon content allows for the formation of stable chromium carbides within the steel's matrix at elevated temperatures. These precipitates strengthen the material and significantly improve its tensile and yield strength in high-heat environments.
- Excellent Creep Resistance: Creep is the tendency of a solid material to deform permanently under the influence of persistent mechanical stresses, especially at high temperatures. The robust microstructure of 304H Stainless Steel Pipe Fittings makes them highly resistant to creep, ensuring dimensional stability and long-term reliability in applications like boilers and pressure vessels.
- Controlled Grain Size: In addition to the carbon content, UNS S30409 material is often produced with a coarser grain size (ASTM No. 7 or coarser), which further enhances its high-temperature creep strength.
As a premier manufacturer, Amardeep Steel ensures that every SS 304H Butt Weld Pipe Fitting provides the mechanical integrity needed for safe and efficient operation in the most severe thermal conditions.
Table of Contents
- Stainless Steel 304H Butt Weld Fittings Specifications
- Chemical Composition & Mechanical Properties of Stainless Steel 304H Butt weld Fittings
- Mechanical Properties of Stainless Steel 304H Butt weld Fittings
- Heat Treatment & Tolerances of Stainless Steel 304H Butt weld Fittings
- Dimensional Tolerances
- Types & Forms of Stainless Steel 304H Butt weld Fittings
- Applications & Industries Served of Stainless Steel 304H Butt weld Fittings
- Why Choose Amardeep Steel for Stainless Steel 304H Butt weld Fittings?
- Related Products
- Get a Competitive Price
Stainless Steel 304H Butt Weld Fittings Specifications
Our ASTM A403 WP304H Fittings are produced in strict adherence to industry specifications, guaranteeing performance, safety, and system compatibility.
|
Specification |
Details |
|---|---|
|
Specification |
ASTM A403 / ASME SA403 |
|
Grade |
Stainless Steel 304H / UNS S30409 / WNR 1.4948 |
|
Dimensions |
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
|
Size Range |
1/2" NB to 48" NB (Seamless, Welded, and Fabricated) |
|
Type |
Seamless / Welded / Fabricated |
|
Wall Thickness |
Sch 5s, Sch 10s, Sch 40s, STD, Sch 80s, XS, Sch 160s, Sch XXS |
|
Bending Radius |
R=1D, 2D, 3D, 5D, 6D, 8D, 10D, or Custom |
|
Forms |
Elbows, Tees, Reducers, Caps, Stub Ends, Bends, Crosses, Nipples |
Chemical Composition & Mechanical Properties of Stainless Steel 304H Butt weld Fittings
The exceptional performance of our Stainless Steel 304H Butt weld Fittings is a direct result of their precise chemical balance and robust mechanical properties.
Chemical Composition (wt %)
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
|---|---|---|---|---|---|---|---|
|
SS 304H (UNS S30409) |
0.04-0.10 |
2.0 max |
0.75 max |
0.045 max |
0.030 max |
18.0-20.0 |
8.0-10.5 |
Mechanical Properties of Stainless Steel 304H Butt weld Fittings
|
Property |
Minimum Value |
|---|---|
|
Tensile Strength |
515 MPa (75,000 psi) |
|
Yield Strength (0.2% Offset) |
205 MPa (30,000 psi) |
|
Elongation (in 50mm) |
40% |
|
Hardness, Rockwell B |
92 HRB max |
|
Hardness, Brinell |
201 HBW max |
Heat Treatment & Tolerances of Stainless Steel 304H Butt weld Fittings
We employ rigorous manufacturing controls, including precise heat treatment and dimensional checks, to ensure every fitting meets your project's exact requirements.
Heat Treatment Requirements
All ASTM A403 WP304H Fittings undergo a solution annealing treatment. This process involves heating the fittings to a minimum temperature of 1040°C (1900°F), holding them long enough to ensure a fully austenitic structure, and then cooling them rapidly. This heat treatment dissolves any potentially detrimental secondary phases and optimizes the material for maximum strength and corrosion resistance in its intended high-temperature service environment.
Dimensional Tolerances
Dimensional accuracy is critical for a successful installation. Our ASME B16.9 304H Butt Weld Fittings are manufactured to the strict tolerances defined in the standard. This ensures precise control over:
- Center-to-face dimensions for elbows and tees
- Angular alignment for perfect fit-up
- Wall thickness consistency
- End bevels for high-quality weld preparation
This dedication to precision minimizes on-site adjustments and ensures a seamless integration into your piping system.
Types & Forms of Stainless Steel 304H Butt weld Fittings
Amardeep Steel Center offers a comprehensive range of Stainless Steel 304H Butt weld Fittings to accommodate any piping layout.
- SS 304H Elbows (45°, 90°, 180°): To facilitate changes in flow direction, available in both Long Radius (LR) for smooth flow and Short Radius (SR) for installations with space constraints.
- SS 304H Tees (Equal & Reducing): To create 90-degree branches from a main line. Equal tees have three same-sized outlets, while reducing tees have a smaller branch outlet.
- SS 304H Reducers (Concentric & Eccentric): To connect pipes of different diameters. Concentric reducers are used for vertical lines, while eccentric reducers are ideal for horizontal lines to maintain the top or bottom level.
- SS 304H Pipe Caps: To provide a secure, permanent seal at the end of a pipeline.
- SS 304H Stub Ends: Used in conjunction with lap joint flanges to create a rotatable flanged connection, simplifying bolt alignment during assembly.
- SS 304H Bends (3D, 5D, 10D): Provide a more gradual change in direction than elbows, minimizing pressure drop in high-velocity or solids-bearing fluid systems.
- 304H Welded Pipe Fittings: In addition to seamless, we provide high-quality fabricated and welded fittings for larger diameters, all meeting stringent quality and testing standards.
Applications & Industries Served of Stainless Steel 304H Butt weld Fittings
The unique high-temperature properties of SS 304H Butt Weld Pipe Fittings make them essential components in the following industries:
- Power Generation: Used extensively in coal, gas, and nuclear power plants for superheater and reheater tubes, boiler components, and high-pressure steam lines.
- Petroleum Refining: For furnace tubes, catalytic cracking units, and other equipment in refining processes that operate at high temperatures.
- Petrochemical & Chemical Industry: In reactors, heat exchangers, and process piping for producing chemicals, polymers, and fertilizers.
- Industrial Furnaces & Kilns: For structural components, burners, and exhaust systems that are exposed to extreme heat.
- Waste Incineration: In incinerators and waste-to-energy plants where high temperatures and corrosive flue gases are present.
- Aerospace: For engine components and exhaust systems that require high strength at elevated temperatures.
Why Choose Amardeep Steel for Stainless Steel 304H Butt weld Fittings?
Partnering with Amardeep Steel Center ensures you receive not just a product, but a complete quality and service guarantee.
- Manufacturing Excellence: Our advanced production facilities are dedicated to producing SS 304H Butt Weld Fittings with superior dimensional accuracy, consistent mechanical properties, and a flawless finish.
- Global Exports: We are a trusted exporter with a robust supply chain, delivering our products on time to clients across the USA, Canada, UAE, Saudi Arabia, Europe, and Southeast Asia.
- Rapid Turnaround: We maintain a comprehensive inventory of standard Stainless Steel 304H Butt weld Fittings, allowing us to fulfill orders quickly and keep your projects on schedule.
- Certified Quality: Our commitment to quality is validated by our ISO 9001:2015 certification. All fittings come with Mill Test Certificates (MTC) as per EN 10204 3.1. We also arrange for third-party inspections from world-renowned agencies like TUV, DNV, and Bureau Veritas.
- Expert Technical Support: Our team of metallurgists and engineers is always ready to provide expert advice, helping you select the optimal materials and designs for your specific high-temperature applications.
Related Products
- Stainless Steel 304 Butt Weld Fittings
- Stainless Steel 304L Butt Weld Fittings
- Stainless Steel 316H Butt Weld Fittings
- Stainless Steel 304H Seamless Pipes
- Stainless Steel 304H Flanges
- Stainless Steel 304H Round Bars
Get Your Stainless Steel 304H Butt weld Fittings Price
Ready to place an order for your high-temperature project? Contact us today for a prompt and competitive price quote on our Stainless Steel 304H Butt weld Fittings. Our sales experts are on standby to assist with your requirements.
Frequently Asked Questions (FAQ's)
1. What is the key difference between SS 304, 304L, and 304H fittings?
The primary difference is carbon content and its effect on performance.
- 304: The standard, all-purpose grade.
- 304L: Low carbon (≤0.03%), for superior weldability and avoiding sensitization.
- 304H: High carbon (0.04%-0.10%), for superior strength and creep resistance at high temperatures (above 525°C / 975°F).
2. What is the maximum service temperature for Stainless Steel 304H Butt weld Fittings?
Grade 304H is designed for continuous service in temperatures up to about 870°C (1600°F). It retains a significant portion of its strength and offers excellent oxidation resistance within this range.
3. Is post-weld heat treatment necessary for 304H fittings?
Generally, no. 304H Welded Pipe Fittings are designed to be used in the as-welded condition. The material's chemistry is optimized for high-temperature service without the need for post-weld annealing, which is a key advantage in field construction.
4. Can I use 304H fittings in place of standard 304 fittings?
Yes, 304H meets all the properties of standard 304. However, it is typically more expensive and specified only when its high-temperature strength is actually required. Using it for ambient temperature applications would not be cost-effective.
5. What information is required to get an accurate quote?
To provide the best price and lead time, please specify the fitting type (e.g., 90° LR elbow), nominal pipe size (e.g., 6-inch), wall thickness or schedule (e.g., Sch 80s), required quantity, and any third-party testing or special certification needs.
