Stainless Steel 321 Flanges Manufacturer in India

What are Stainless Steel 321 Flanges?

Stainless Steel 321 Flanges are titanium-stabilized stainless steel pipe flanges designed for high-temperature service and improved resistance to carbide precipitation. Manufactured under ASTM A182 F321 standards, these flanges provide excellent oxidation resistance, superior weldability, and reliable mechanical strength. Common types include SS 321 Slip On Flanges (SORF), 321 Stainless Steel Blind Flanges (BLRF), SS 321 Weld Neck Flanges (WNRF), Socket Weld, and Orifice Flanges.

EN 1092-1 1.4541 Flange Manufacturer in India

Stainless Steel 321 Flanges are high-temperature resistant pipe connection components manufactured using titanium-stabilized austenitic stainless steel. These flanges are widely selected for piping systems operating under elevated temperatures where resistance to intergranular corrosion, oxidation, and thermal cycling is required.

As a trusted Stainless Steel 321 Flanges Manufacturer in India, we supply precision-engineered flange solutions suitable for demanding industries including petrochemical processing, power generation, heat exchangers, refineries, chemical plants, and industrial fluid transportation systems.

Our product range includes SS 321 Flanges manufactured according to international standards including ASTM A182 F321 Flanges, ANSI B16.5 SS 321 Flanges, ASME SA182 F321 Pipe Flanges, and EN 1092-1 1.4541 Flange specifications.

What Makes Stainless Steel 321 Flanges Different?

Grade 321 stainless steel contains titanium additions that stabilize the material against chromium carbide formation during welding and prolonged exposure to elevated temperatures.

Compared to conventional 304 grades, Stainless Steel 321 Flanges perform better in applications where operating temperatures continuously range between 427°C and 816°C.

These flanges offer:

Excellent resistance to intergranular corrosion
Superior oxidation resistance at elevated temperatures
Strong mechanical performance under thermal stress
Improved weldability without post-weld annealing
Long service life in aggressive environments
Reduced maintenance and replacement costs

Common material designations include:

ASTM A182 F321 Flanges
ASME SA182 F321 Pipe Flanges
UNS S32100 Flange
Werkstoff Nr. 1.4541 Flanges
EN 1092-1 1.4541 Flange

Types of Stainless Steel 321 Flanges We Supply

SS 321 Slip On Flanges (SORF)

SS 321 Slip On Flanges are designed to slide over the pipe before welding. These flanges are commonly selected for moderate-pressure systems due to easy installation and cost efficiency.

321 Stainless Steel Blind Flanges (BLRF)

Blind flanges are used to close piping systems and isolate flow. 321 Stainless Steel Blind Flanges provide excellent sealing performance and easy future expansion.

SS 321 Weld Neck Flanges (WNRF)

SS 321 Weld Neck Flanges feature a long tapered hub that distributes stress effectively and is suitable for high-pressure and high-temperature applications.

ASTM A182 F321 Socket Weld Flanges

Socket weld flanges are commonly installed in smaller pipe diameters and provide strong leak-resistant connections.

SS 321 Orifice Flanges

SS 321 Orifice Flanges are engineered for flow measurement applications and accommodate pressure tapping systems.

Other available options:

Threaded Flanges
Lap Joint Flanges
Ring Type Joint Flanges
Spectacle Blind Flanges
Plate Flanges
Custom Machined Flanges

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ASTM A182 F321 Flanges Specifications

Our ASTM A182 F321 Flanges are manufactured according to international quality standards to ensure dimensional accuracy, durability, and long service life.

Specification	Details
Material Grade	Stainless Steel 321
ASTM Standard	ASTM A182 F321 Flanges
ASME Standard	ASME SA182 F321 Pipe Flanges
UNS Number	UNS S32100 Flange
Werkstoff Number	Werkstoff Nr. 1.4541 Flanges
Flange Standards	ANSI B16.5, ASME B16.47, EN 1092-1
Pressure Ratings	Class 150, 300, 600, 900, 1500, 2500
Size Range	½” NB to 48″ NB
Manufacturing Method	Forged, Machined
Face Types	RF, FF, RTJ
Origin	Stainless Steel 321 Flanges Manufacturer in India

Stainless Steel 321 Flanges Chemical Composition

Element	Composition (%)
Chromium	17.0–19.0
Nickel	9.0–12.0
Titanium	5×C min – 0.70 max
Carbon	0.08 max
Manganese	2.00 max
Silicon	1.00 max
Phosphorus	0.045 max
Sulfur	0.030 max

Mechanical Properties of ASTM A182 F321 Flanges

Property	Value
Tensile Strength	515 MPa Min
Yield Strength	205 MPa Min
Elongation	40%
Hardness	95 HRB Max
Density	8.0 g/cm³

These mechanical characteristics make Alloy 321 Flanges suitable for continuous service under demanding process conditions.

SS 321 Flange Dimensions Chart / Weight Chart

We supply Stainless Steel 321 Flanges in multiple dimensional standards to meet project specifications.

Dimensions

Size Range: ½” NB to 48” NB
Pressure Ratings: Class 150 to Class 2500
Standards: ANSI, ASME, DIN, EN, JIS
Face Types: RF, FF, RTJ

Approximate Weight Range

Size	Approx Weight
1 Inch	1–2 kg
2 Inch	3–5 kg
4 Inch	8–12 kg
8 Inch	20–35 kg
12 Inch	40–70 kg

Manufacturing Process of Stainless Steel 321 Flanges

Applications of ASTM A182 F321 Flanges

ASTM A182 F321 Flanges are widely used in industries where elevated temperature resistance and corrosion performance are critical.

Industries served include:

Petrochemical plants
Oil and gas processing
Chemical manufacturing
Heat exchangers
Fertilizer plants
Pharmaceutical facilities
Thermal power generation
Food processing industries
Industrial piping systems

Related SS Flanges Grades

Why Customers Choose Us as Their ASTM A182 F321 Flange Exporter?

We focus on supplying industrial flange solutions that meet international quality expectations.

Reasons customers work with us:

Consistent material traceability
Global export capability
Wide inventory availability
Fast production schedules
Third-party inspection support
Custom machining options
Technical assistance for selection

Our team supports both standard and project-based requirements across domestic and international markets.

Looking for high-performance Stainless Steel 321 Flanges for industrial applications? Contact our team to discuss dimensions, specifications, pricing, and delivery timelines. We help businesses source reliable ASTM A182 F321 Flanges with complete documentation and technical support.

Global Reach

ASC LLP 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 321 Flanges. 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.

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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.