MMA Stainless Steel Electrodes GYS Inox 312 R 2.5mm Pack of 54
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- Semi-basic coated electrode for ferritic-austenitic and difficult-to-weld steels
- Excellent mechanical properties with high resistance to high temperature cracks
- Soft arc with easy slag removal, ideal for repairs and maintenance applications

The INOX 312 R is a semi-basic coated MMA electrode designed for welding and reinforcing ferritic-austenitic steels and steels with difficult weldability. It delivers excellent mechanical properties and high resistance to high temperature cracks, making it suitable for repairs and maintenance across multiple steel types.
Features
- Semi-basic coating for versatile application
- Soft arc characteristic
- Easy slag removal
- High resistance to cracks
- Suitable for universal use on repairs and maintenance
- Can be used on carbon steel, galvanised steel, tool steel, manganese steel and dissimilar steels
| Specification | Value |
|---|---|
| Classification EN 1600 / ISO 3581-A | E 29 9 R 2 |
| Classification AWS A 5.4 | E 312-16 |
| Diameter | 2.5 mm |
| Length | 300 mm |
| Quantity per case | 54 electrodes |
| Polarity | Direct current, electrode positive (+) |
| Minimum ignition voltage | 50 V |
| Carbon content | 0.10% |
| Manganese content | 1.20% |
| Silicon content | 0.20% |
| Nickel content | 10.00% |
| Chromium content | 30.00% |
| Yield strength (Rs) | 450 MPa |
| Tensile strength (Rm) | 680 MPa |
| Elongation (A 5 d) | 25% |
| Impact strength at 0 °C (KV) | 60 J |
| Recommended welding current | 40-80 A |
| Suitable thickness range | 3-6 mm |
| Brand | GYS |
Technical Data Sheet
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