UNS N08904 (904L) Super-Austenitic Stainless Steel Products

UNS N08904 Manufacturer • UNS N08904 Exporter • UNS N08904 Supplier • UNS N08904 Dealer • UNS N08904 Distributor • UNS N08904 Stockist • UNS N08904 Wholesaler

Company Overview – Dipti Metal Industries

Founded in 2009, Dipti Metal Industries in Mumbai, India, is a global leader in manufacturing and exporting UNS N08904 (904L) stainless steel products. We cater to over 65 countries, ensuring top-quality production with ISO-certified systems, precision CNC machining, AI-enhanced logistics, and full EN 10204 3.1 / 3.2 traceable documentation.

About UNS N08904 (904L)

UNS N08904, commonly referred to as 904L, is a super-austenitic stainless steel alloy known for its exceptional corrosion resistance in harsh acidic and chloride-rich environments. Its unique blend of high nickel, molybdenum, and copper content makes it far superior to standard austenitic grades.

Standards & Global Equivalents

UNS N08904 Product Range

Steel Butt Weld Pipe Fittings

• UNS N08904 Elbows (45°, 90°, 180° — Long & Short Radius)

• UNS N08904 Tees (Equal & Reducing)

• UNS N08904 Reducers (Concentric & Eccentric)

• UNS N08904 End Caps, Stub Ends, Crosses

Steel Socket Weld & Threaded Fittings

• UNS N08904 Couplings (Full & Half)

• UNS N08904 Plugs, Unions, Olets, Swage Nipples, Hex Nipples, Hex Bushings

Steel Flanges

• UNS N08904 Weld Neck, Slip-On, Blind, Threaded, Socket-Weld Flanges

• UNS N08904 Long Weld Neck, Spectacle Blind, Spade, Spacer Flanges

Steel Fasteners

• UNS N08904 Stud Bolts

• UNS N08904 Hex Bolts

• UNS N08904 Nuts & Heavy Hex Nuts

• UNS N08904 Flat Washers

Key Advantages

• Outstanding resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking

• Excellent performance in sulfuric and phosphoric acid environments

• Fully austenitic, with low carbon content to avoid sensitization post-weld

• Superior mechanical integrity across wide temperature ranges, making it ideal for harsh industrial conditions

Chemical Composition (Typical)

• Chromium: 19–23%

• Nickel: 23–28%

• Molybdenum: 4–5%

• Copper: 1–2%

• Carbon: ≤0.02%

Applications

• Chemical processing and handling equipment

• Oil and gas refining and scrubber systems

• Marine hardware and desalination plants

• Pharmaceutical and food-grade process systems

• Power generation flue gas scrubbers and condensers

Global Export Footprint

• North America: USA, Canada, Mexico

• Europe: Germany, UK, France, Italy, Spain, Poland

• Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait

• Asia-Pacific: Japan, Singapore, South Korea, Australia, New Zealand

• Africa: South Africa, Egypt, Nigeria, Kenya

• South America: Brazil, Argentina, Chile

Quality & Packaging

• Delivered with EN 10204 3.1 / 3.2 Test Certificates

• Third-party inspections available (e.g. TUV, DNV, SGS)

• Secure, sea-worthy wooden crate packaging with thread-end protection

• Custom marking, labeling, and documentation available on request