DIPTI METAL INDUSTRIES
Leading ER309Si TIG Rod Stockist, ER309Si Supplier & ER309Si Exporter in Mumbai, India
Dipti Metal Industries (A KMR Group Company) is the globally recognized ER309Si Supplier and the primary ER309Si Stockist of High-Silicon over-alloyed stainless steel welding consumables in Mumbai, India. ER309Si is a technical evolution of the standard 309 grade, containing a higher Silicon content (0.65% to 1.00%). This enhancement improves arc stability and weld pool fluidity, enabling superior "wetting" of the joint edges and resulting in a smoother bead with minimal spatter. As a premier ER309Si Exporter, we supply certified TIG rods to automotive exhaust manufacturers, chemical plant fabricators, and heavy structural engineering firms across 75+ countries.
🏭 Strategic High-Silicon Fluidity for Complex Joints
As a leading ER309Si Supplier in Mumbai, we address the critical need for high-productivity welding consumables. ER309Si is primarily used for joining stainless steels to carbon or low-alloy steels and for the first layer (buffer layer) of stainless cladding. The elevated Silicon level reduces surface tension in the molten weld pool, which allows for faster travel speeds and a much aesthetic bead appearance, making it the definitive choice for robotic and high-precision manual TIG welding.
The ER309Si Technical Edge
- Exceptional arc stability even at low currents
- Superior wetting action for cleaner edge transitions
- Lower spatter levels compared to standard 309L
- High resistance to hot cracking in dissimilar joints
Critical Industry Solutions
- Automotive: Exhaust manifolds and systems.
- Petrochemical: Cladding of mild steel vessels.
- Fabrication: Joining 304/316 components to steel frames.
- Kitchenware: High-finish aesthetic welding.
📘 Technical Profile: ER309Si (AWS A5.9) Filler Metal
Typical Chemical Composition (%)
| Element | Typical Range |
|---|---|
| Carbon (C) | 0.12 Max |
| Chromium (Cr) | 23.0 - 25.0 |
| Nickel (Ni) | 12.0 - 14.0 |
| Silicon (Si) | 0.65 - 1.00 |
| Manganese (Mn) | 1.0 - 2.5 |
| Phosphorus (P) | 0.03 Max |
Mechanical Properties (Typical)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 590 MPa (85 ksi) |
| Yield Strength | ≥ 400 MPa (58 ksi) |
| Elongation (%) | ≥ 30% |
| Impact Strength | Tested at Room Temp |
Certified to AWS A5.9 ER309Si / ASME SFA 5.9. Supplied with full 3.1 Mill Test Certification and Heat Traceability.
Inventory Availability & Export Standards
- 1.20 mm (0.045")
- 1.60 mm (1/16")
- 2.00 mm (5/64")
- 2.40 mm (3/32")
- 3.20 mm (1/8")
- Length: 1000mm (Standard)
Maintaining material purity for international shipments:
- 5kg (11lb) / 10kg (22lb) plastic tubes.
- Individually embossed Heat Number on each rod.
- VCI vapor-barrier protection for anti-rust sea transit.
- ISPM-15 wooden boxes for international air/ocean shipments.
Global Supply Network for ER309Si Consumables
As an established ER309Si Exporter, Dipti Metal Industries maintains a seamless logistics network from Mumbai to global manufacturing hubs.
- Middle East: UAE, Saudi Arabia, Kuwait, Oman, Qatar.
- Americas: USA, Canada, Mexico, Brazil, Argentina.
- Europe: Germany, UK, Netherlands, Norway, Italy, France.
- Asia: Singapore, Australia, Vietnam, Japan, South Korea.
Request a Quote for ER309Si 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