DIPTI METAL INDUSTRIES
Leading ER33-31 TIG Rod Stockist, ER33-31 Supplier & ER33-31 Exporter in Mumbai, India
Dipti Metal Industries (A KMR Group Company) is the primary ER33-31 Supplier and ER33-31 Stockist of super-austenitic stainless steel welding consumables in Mumbai, India. ER33-31 (matching Alloy 31) is a high-chromium, high-nickel filler metal enhanced with nitrogen and molybdenum. It is specifically engineered to bridge the gap between stainless steels and nickel-base alloys, providing exceptional resistance to localized corrosion (pitting/crevice) and stress corrosion cracking (SCC) in highly aggressive media. As a premier ER33-31 Exporter, we supply certified TIG rods to phosphoric acid plants, offshore desalination projects, and FGD systems across 75+ countries.
🏭 Strategic Resistance for the Most Corrosive Chemical Services
As a leading ER33-31 Supplier in Mumbai, we cater to chemical engineering firms dealing with "boundary" corrosion cases. ER33-31 filler metal contains ~33% Chromium, making it exceptionally resistant to oxidizing media like nitric acid and contaminated phosphoric acid. Its high Nickel and Molybdenum content ensures stability in halide-rich environments where standard duplex or 316L fillers would suffer rapid localized attack. It is the definitive solution for welding matching base metals or for cladding surfaces exposed to seawater and acidic brines.
The ER33-31 Technical Edge
- Highest Chromium content among austenitic SS fillers
- Exceptional resistance to pitting (PREN ≥ 48)
- Immune to stress corrosion cracking in most media
- Nitrogen addition ensures stable fully-austenitic structure
Extreme Environment Solutions
- Phosphoric Acid: Handles impure concentrated acids.
- FGD Systems: Resists acidic condensates in flue gas.
- Desalination: High-pressure brine recirculation.
- Pulp & Paper: Bleaching plant reactors (chlorine dioxide).
📘 Technical Profile: ER33-31 (ISO 14343-A G/W 33 31 6 L N)
Typical Chemical Composition (%)
| Element | Typical Range |
|---|---|
| Carbon (C) | 0.015 Max |
| Chromium (Cr) | 31.0 - 35.0 |
| Nickel (Ni) | 30.0 - 32.0 |
| Molybdenum (Mo) | 6.0 - 7.0 |
| Copper (Cu) | 1.0 - 1.5 |
| Nitrogen (N) | 0.15 - 0.25 |
Mechanical Properties (Typical)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 650 MPa (94 ksi) |
| Yield Strength | ≥ 420 MPa (61 ksi) |
| Elongation (%) | ≥ 35% |
| Pitting Resist. (PREN) | ≥ 48 (Super-Austenitic) |
Certified to ISO 14343-A / AWS equivalents. Supplied with full 3.1 Mill Test Certification and Heat Traceability.
ER33-31 Inventory & Export Standards
- 1.60 mm (1/16")
- 2.00 mm (5/64")
- 2.40 mm (3/32")
- 3.20 mm (1/8")
- Standard Length: 1000mm (39")
- Custom lengths available on request
Ensuring material purity for offshore and chemical audits:
- Sealed moisture-proof plastic tubes (5kg units).
- Heat Number and Grade embossed on each individual rod.
- VCI vapor-barrier protection for anti-rust sea freight.
- ISPM-15 wooden boxes for international air/ocean shipments.
Global Supply Chain for ER33-31 Consumables
As an established ER33-31 Exporter, Dipti Metal Industries ensures that time-critical chemical and energy projects receive premium filler metals worldwide from our Mumbai hub.
- Americas: USA (Gulf Coast), Canada, Brazil, Chile.
- Middle East: UAE, Saudi Arabia (Jubail/Yanbu), Kuwait, Oman.
- Europe: Germany, UK, Netherlands, Norway, Spain.
- Asia/Pacific: Singapore, Australia, Vietnam, Japan, South Korea.
Request a Quote for ER33-31 TIG Welding Rods
📍 Contact Dipti Metal Industries
Headquarters & Global Hub
Dipti Metal Industries (A KMR Group Company)
No.9, Shreepati Castle, D-1, 10–11th Khetwadi Back Road, Mumbai – 400004, India
Phone: +91-22-66381301
WhatsApp: +91-9975266499