Used for welding high carbon steel, tool steel and dissimilar metals.
E312-16 is a duplex stainless steel electrode with a titanium-calcium coating. The welding process performance is excellent, suitable for both AC and DC. With approximately 40% ferrite content, it provides excellent crack resistance.
- Baking: Electrode shall be baked at 300-350℃ for 1 hour before use.
- Preparation: Remove rust, grease, moisture and other impurities before welding.
- Preheating: For hardenable steel or complex/thick workpieces, preheat at 150℃ when using small current.
Chemical Composition (Wt. %)
| Items | C | Mn | Si | S | P | Ni | Cr | Mo | Cu |
| Requirements | 0.15 | 0.5-2.5 | ≤1.0 | ≤0.03 | ≤0.04 | 8.0-10.5 | 28.0-32.0 | ≤0.75 | ≤0.75 |
| Typical Results | 0.09 | 1.08 | 0.76 | 0.010 | 0.028 | 9.97 | 29.0 | 0.12 | 0.17 |
| Items | Rm / MPa (Tensile Strength) | A / % (Elongation) |
| Requirements | ≥660 | ≥15 |
| Typical Results | 760 | 28 |
Typical Operating Procedures (AC or DC+)
| Diameter (mm) | 2.5 | 3.2 | 4.0 | 5.0 |
| Current (A) | 50-80 | 80-110 | 130-160 | 160-200 |
Packaging Details: 5kg/box, 4boxes/carton, 20kgs/carton, 50cartons/pallet. 21MT - 26MT per 1X20" FCL.
Material Compliance: Raw materials must comply with drawings and technical documents. Materials entering the factory are inspected according to GB/T 5117, GB/T 5118, and GB/T 8110 standards. Welding rods should not be baked more than twice and must be stored in an incubator after drying.
Frequently Asked Questions
What are the primary applications for E312-16 electrodes?
E312-16 is specifically designed for welding high carbon steel, tool steel, and joining dissimilar metals.
Does E312-16 work with AC or DC current?
Yes, it is versatile and provides excellent welding performance on both AC and DC (typically DC+) power sources.
Why does this electrode have high crack resistance?
The weld metal contains approximately 40% ferrite, which gives the duplex structure its superior resistance to cracking.
What is the required pre-welding preparation for the electrodes?
Electrodes must be baked at 300-350℃ for 1 hour before use to ensure moisture-free performance.
Are there specific instructions for welding thick or hardenable steel?
Yes, for hardenable steel or complex, thick workpieces, it is recommended to preheat the material to 150℃, especially when using lower current settings.
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