AISI 321H Stainless Steel Supplier & Exporter in India

Dipti Metal Industries, established in 2009 by Mr. Kumpsingh Rajput, is a trusted manufacturer, stockist, and exporter of AISI 321H stainless steel products. With certifications such as ISO 9001:2015, PED, CE, IBR, TUV, SGS, Lloyd’s, and DNV, we deliver premium stainless steel solutions to industries across 56+ countries worldwide.

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What is AISI 321H Stainless Steel?

AISI 321H is a titanium-stabilized, high-carbon variant of AISI 321 stainless steel, specifically designed for high-temperature service.

• It offers excellent resistance to intergranular corrosion and oxidation at elevated temperatures.

• The higher carbon content improves creep strength and long-term durability in continuous service conditions above 537°C (1000°F).

• AISI 321H is widely used in industries where thermal stability and corrosion resistance are critical.

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AISI 321H Stainless Steel Product Range

Pipes & Tubes

• AISI 321H Seamless Pipes & Tubes

• AISI 321H Welded Pipes & Tubes

• AISI 321H ERW Pipes

• AISI 321H EFW Pipes

Buttweld Fittings (ASTM A403 WP321H)

• AISI 321H Elbows (90°, 45°, LR, SR)

• AISI 321H Equal & Reducing Tees

• AISI 321H Concentric & Eccentric Reducers

• AISI 321H End Caps

Forged Fittings (ASTM A182 F321H)

• AISI 321H Socket Weld Fittings

• AISI 321H Threaded Fittings

• AISI 321H Couplings, Unions & Nipples

Flanges (ASTM A182 F321H)

• AISI 321H Weld Neck Flanges

• AISI 321H Slip-On Flanges

• AISI 321H Blind Flanges

• AISI 321H Lap Joint Flanges

• AISI 321H RTJ Flanges

Sheets, Plates & Coils (ASTM A240)

• AISI 321H Hot Rolled Plates

• AISI 321H Cold Rolled Sheets

• AISI 321H Strips & Coils

Bars & Rods

• AISI 321H Round Bars

• AISI 321H Bright Bars

• AISI 321H Square Bars

• AISI 321H Hex Bars

Wires

• AISI 321H Wire Rods

• AISI 321H Spring Wires

• AISI 321H Welding Wires

Fasteners (ASTM A193 / A194)

• AISI 321H Bolts

• AISI 321H Nuts

• AISI 321H Screws

• AISI 321H Washers

• AISI 321H Stud Bolts & Threaded Rods

Valves

• AISI 321H Gate Valves

• AISI 321H Globe Valves

• AISI 321H Ball Valves

• AISI 321H Check Valves

Custom Forgings

• AISI 321H Forged Rings, Discs, Blocks, Components

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Specifications & Standards

• Grade: AISI 321H / UNS S32109

• Standards:

  • ASTM: A312, A213, A240, A182, A403, A193, A194

  • ASME: SA312, SA213, SA240, SA182, SA403, SA193, SA194

  • EN/DIN: 1.4878 (X8CrNiTi18-10)

  • JIS: SUS 321H

  • BS: 321S51

  • ISO: X8CrNiTi18-10

  • GOST: 08Ch18N10T

• Sizes Available:

  • Pipes & Tubes: ½” to 24”

  • Plates: 1 mm to 100 mm thickness

  • Bars: 6 mm to 500 mm diameter

  • Wires & Coils: Custom sizes

• Finish Options: Bright, Annealed, Pickled, Polished

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International Equivalent Grades

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Applications of AISI 321H Stainless Steel

• AISI 321H Aircraft Exhaust Systems & Aerospace Components

• AISI 321H Steam Lines, Superheater Tubes, Boiler Equipment

• AISI 321H Gas Turbine Exhausts & High-Temperature Piping

• AISI 321H Petrochemical & Refinery Equipment

• AISI 321H Heat Exchangers & Thermal Processing Units

• AISI 321H Expansion Joints & Furnace Parts

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Global Export Network 🌍

We supply AISI 321H stainless steel products to over 56 countries, including:

• Middle East: Dubai, Abu Dhabi, Riyadh, Dammam, Muscat, Doha, Kuwait City

• Europe: London, Berlin, Milan, Paris, Madrid, Warsaw

• North America: Houston, New York, Los Angeles, Toronto, Vancouver, Monterrey

• Asia-Pacific: Singapore, Tokyo, Seoul, Shanghai, Bangkok, Kuala Lumpur

• Africa: Johannesburg, Cape Town, Cairo, Lagos, Nairobi

• Latin America: São Paulo, Rio de Janeiro, Buenos Aires, Santiago

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Why Choose Dipti Metal Industries?

• Founded in 2009 by Mr. Kumpsingh Rajput

• Certified by ISO, CE, PED, IBR, TUV, SGS, Lloyd’s, DNV

• Exporting to 56+ countries worldwide

• Wide portfolio of AISI 321H stainless steel products

• Custom manufacturing, forging, machining, and export-ready packaging

• Proven reliability, competitive pricing, and on-time delivery

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Frequently Asked Questions (FAQs)

Q1: What is the difference between AISI 321 and AISI 321H?
AISI 321H contains higher carbon content than 321, giving it improved creep strength and long-term performance at elevated temperatures.

Q2: Where is AISI 321H commonly used?
It is used in aircraft exhausts, boilers, turbines, petrochemicals, and high-temperature structural applications.

Q3: Is AISI 321H weldable?
Yes, AISI 321H is titanium-stabilized, which prevents carbide precipitation and ensures good weldability.

Q4: Do you supply AISI 321H fasteners and valves?
Yes, we supply a complete range of AISI 321H fasteners and valves for industrial use.

Q5: Do you provide certifications and inspections?
Yes, complete Material Test Certificates (EN 10204 3.1/3.2) and third-party inspections from agencies like TUV, SGS, BV, Lloyd’s, and ABS are available.

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Get a Quote Today

Looking for a reliable AISI 321H stainless steel supplier and exporter in India?
Since 2009, Dipti Metal Industries has delivered quality, precision, and global compliance to industries worldwide.

Contact us today for a competitive quotation for your AISI 321H stainless steel requirements.