Amardeep Steel Center is a premier manufacturer, supplier, and exporter of Stainless Steel 316H Butt weld Fittings, the definitive solution for high-temperature structural and pressure-containing applications. Engineered for superior strength and creep resistance at elevated temperatures, our fittings provide unmatched reliability in power generation, chemical processing, and petroleum refining. We stock a complete range of ASTM A403 WP316H Fittings, including elbows, tees, and reducers, all manufactured to exceed the most demanding international quality standards. Our expertise in high-performance alloys ensures we deliver components that guarantee the long-term integrity of your critical high-temperature piping systems.
What Are Stainless Steel 316H Butt Weld Fittings?
Stainless Steel 316H Butt weld Fittings are specialized pipe connectors designed explicitly for high-temperature service. They are joined to pipes using a butt-welding process, creating a robust, full-penetration weld that ensures the joint is as strong and reliable as the pipe itself.
The "H" in Grade 316H (UNS S31609) stands for "High Carbon." This grade is a modification of the standard molybdenum-bearing 316 stainless steel, but with a controlled carbon content in the range of 0.04% to 0.10%. This higher carbon content is the key to its superior performance at temperatures generally above 550°C (1022°F). The key benefits include:
- Enhanced High-Temperature Strength: The increased carbon content provides greater tensile and yield strength at elevated temperatures compared to standard 316 or 316L grades.
- Superior Creep Resistance: Creep is the tendency of a material to deform slowly over time under constant stress at high temperatures. The microstructure of 316H Stainless Steel Pipe Fittings makes them highly resistant to creep, ensuring long-term dimensional stability in applications like pressure vessels and boilers.
- Maintained Corrosion Resistance: While optimized for heat, Grade 316H Buttweld Fittings still retain the excellent corrosion resistance of the 316 series, including resistance to chlorides and a wide range of industrial chemicals.
As a specialist manufacturer, Amardeep Steel ensures every SS 316H Butt Weld Pipe Fitting delivers the mechanical integrity and long service life required for safe and efficient operation in severe thermal environments.
Table of Contents
- Stainless Steel 316H Butt weld Fittings Specifications
- Chemical Composition & Mechanical Properties of Stainless Steel 316H Butt weld Fittings
- Mechanical Properties of Stainless Steel 316H Butt weld Fittings
- Heat Treatment & Tolerances of Stainless Steel 316H Butt weld Fittings
- Dimensional Tolerances
- Types & Forms of Stainless Steel 316H Butt weld Fittings
- Applications & Industries Served of Stainless Steel 316H Butt weld Fittings
- Why Choose Amardeep Steel for Stainless Steel 316H Butt weld Fittings?
- Related Products
- Get a Competitive Price
Stainless Steel 316H Butt weld Fittings Specifications
Our ASTM A403 WP316H Fittings are manufactured in strict compliance with industry specifications to guarantee performance, safety, and system compatibility.
|
Specification |
Details |
|---|---|
|
Specification |
ASTM A403 / ASME SA403 |
|
Grade |
Stainless Steel 316H / UNS S31609 / WNR 1.4919 |
|
Dimensions |
ASME B16.9 316H Butt Weld Fittings, 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 316H Butt weld Fittings
The exceptional high-temperature performance of our SS 316H Buttweld Fittings is rooted in their precisely controlled chemistry and robust mechanical properties.
Chemical Composition (wt %)
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
|---|---|---|---|---|---|---|---|---|
|
SS 316H (UNS S31609) |
0.04-0.10 |
2.0 max |
0.75 max |
0.045 max |
0.030 max |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
Mechanical Properties of Stainless Steel 316H 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 |
95 HRB max |
|
Hardness, Brinell |
217 HBW max |
Heat Treatment & Tolerances of Stainless Steel 316H Butt weld Fittings
Our manufacturing protocol incorporates critical heat treatment and meticulous dimensional controls to ensure every fitting meets the highest standards of quality and performance.
Heat Treatment Requirements
All ASTM A403 WP316H Fittings are supplied in the solution-annealed condition. This involves heating the material to a temperature range of 1040-1120°C (1900-2050°F) and then rapidly cooling it. This heat treatment ensures a homogenous austenitic structure, dissolves any potentially harmful precipitates, and optimizes the material for maximum strength and corrosion resistance in its intended high-temperature service.
Dimensional Tolerances
We manufacture ASME B16.9 316H Butt Weld Fittings to the exact dimensional tolerances specified in the standard. Our commitment to precision ensures:
- Accurate center-to-face and end-to-end dimensions for predictable layouts.
- Correct angularity of elbows and tees for perfect alignment.
- Consistent wall thickness for uniform pressure handling.
- Properly formed end bevels for efficient and high-quality welding.
This precision minimizes field adjustments and ensures a smooth, cost-effective installation process.
Types & Forms of Stainless Steel 316H Butt weld Fittings
Amardeep Steel Center provides a complete selection of Stainless Steel 316H Butt weld Fittings to meet every project need.
- SS 316H Elbows (45°, 90°, 180°): For changing flow direction. Available in Long Radius (LR) for optimized flow and Short Radius (SR) for compact designs.
- SS 316H Tees (Equal & Reducing): To create 90° branch connections from a main pipeline.
- SS 316H Reducers (Concentric & Eccentric): To connect pipes of different diameters while maintaining flow efficiency.
- SS 316H Pipe Caps: To provide a permanent, robust seal at the end of a pipeline.
- SS 316H Stub Ends: Used with lap joint flanges for an economical flanged connection that allows for easy rotational alignment.
- SS 316H Bends (3D, 5D, 10D): Offer a larger turning radius than standard elbows, ideal for minimizing pressure drop and accommodating thermal expansion.
- 316H Welded Pipe Fittings: For larger diameter requirements, we supply high-quality fabricated and 316H Welded Pipe Fittings that are 100% X-ray tested to ensure weld integrity.
Applications & Industries Served of Stainless Steel 316H Butt weld Fittings
The unique high-temperature strength of UNS S31609 Fittings makes them indispensable in the most demanding industries:
- Power Generation: Used extensively in fossil fuel and nuclear power plants for boiler tubes, superheaters, reheaters, and high-pressure steam piping.
- Petroleum Refining: For furnace components, catalytic cracking units, and piping systems in high-temperature refining processes.
- Chemical & Petrochemical Industry: In pressure vessels, reactors, and process piping that operate at elevated temperatures.
- Industrial Furnaces & Heat Exchangers: For structural components, burners, and tubing that must withstand extreme, continuous heat.
- Waste Incineration & Gasification: In components that are exposed to high temperatures and corrosive flue gases.
Why Choose Amardeep Steel for Stainless Steel 316H Butt weld Fittings?
When you choose Amardeep Steel Center, you are investing in quality, reliability, and unparalleled service.
- Manufacturing Excellence: We use advanced manufacturing techniques and premium-grade raw materials to produce Stainless Steel 316H Butt weld Fittings with superior dimensional accuracy and optimized metallurgical properties for high-temperature service.
- Global Exports: As a trusted global exporter, we have a proven track record of supplying our products to major industrial hubs in the USA, Canada, UAE, Saudi Arabia, Europe, and Southeast Asia.
- Fast Turnaround & Large Stock: We maintain a vast inventory of standard SS 316H Butt Weld Pipe Fittings, ensuring we can meet your urgent requirements and keep your projects on schedule.
- Certified Quality: Our commitment to quality is backed by ISO 9001:2015 certification. All fittings are supplied with Mill Test Certificates (MTC) as per EN 10204 3.1, verifying chemical composition and mechanical properties. We also facilitate third-party inspections (TUV, DNV, Lloyd’s).
- Expert Technical Support: Our experienced team of engineers and metallurgists is available to provide technical guidance, helping you select the best materials and solutions for your high-temperature challenges.
Related Products
- Stainless Steel 316 Butt Weld Fittings
- Stainless Steel 316L Butt Weld Fittings
- Stainless Steel 316H Seamless Pipes
- Stainless Steel 316H Plates
- Stainless Steel 316H Round Bars
Get Your Stainless Steel 316H Butt weld Fittings Price
Ready to equip your high-temperature application with the industry's most reliable fittings? Contact us today for a fast and competitive price quote on our Stainless Steel 316H Butt weld Fittings. Our sales team is ready to assist you with your specific requirements.
Frequently Asked Questions (FAQ's)
1. What is the key difference between 316, 316L, and 316H fittings?
The main difference is the carbon content, which dictates their primary application:
- 316: The standard grade with good corrosion resistance and moderate high-temperature strength.
- 316L (Low Carbon): Best for welded applications where post-weld corrosion resistance is critical, as it avoids sensitization. Its high-temperature strength is lower.
- 316H (High Carbon): Best for applications above 550°C (1022°F) due to its superior high-temperature strength and creep resistance.
2. At what temperature should I choose 316H fittings over 316 or 316L?
Grade 316H is specifically designed for and should be specified for continuous service at temperatures above approximately 550°C (1022°F), where its higher carbon content provides significantly better long-term strength and creep resistance.
3. Is post-weld heat treatment needed for 316H?
Generally, no. Grade 316H Buttweld Fittings are designed to be used in the as-welded condition for high-temperature service. The material chemistry is optimized for strength at these temperatures without needing post-weld annealing.
4. Can I substitute 316H for 316L in my application?
While 316H is stronger at high temperatures, it is susceptible to sensitization if welded and then used in corrosive environments at lower temperatures. For applications below 550°C that require welding, 316L is the superior and safer choice to ensure corrosion resistance. 316H should only be used where its high-temperature strength is the primary requirement.
5. What information is needed for an accurate price quote?
To provide you with the most accurate price and lead time, please include the fitting type (e.g., 90° LR elbow), nominal pipe size, wall thickness or schedule (e.g., Sch 80s), required quantity, and any special testing or certification needs.
