Stainless Steel Welding Electrode E312-16
Place of Origin: Zhejiang Province, China
Product Model: AWS E312-16 (Complies with AWS A5.4 standard, corresponding to national standard GB E312-16)
Core Certifications: ISO 9001-2008, CE, SGS
1. Product Overview
AWS E312-16 is a duplex stainless steel electrode with lime-titania type coating. The deposited metal contains approximately 40% ferrite, which endows it with excellent crack resistance and welding process performance. During welding, it produces little spatter, resulting in neat weld formation and excellent subsequent machinability. It is an ideal choice for welding high-carbon steel, dissimilar steel, duplex stainless steel and other materials, and is widely used in the manufacturing of heavy equipment, high-temperature working condition equipment and mining machinery (such as ball mill iron parts).
2. Core Specification Parameters
| Category | Specific Parameters |
|---|---|
| Material | High-purity stainless steel |
| Diameter Specifications | 2.0mm, 2.5mm, 3.2mm, 4.0mm |
| Length | 300mm-500mm |
| Welding Current Adaptation (AC/DC+) | φ2.5mm: 50-80A; φ3.2mm: 80-110A; φ4.0mm: 110-160A; φ5.0mm: 160-220A |
| Operating Temperature | In line with international standards |
| Appearance Color | Grey-white light blue |
3. Deposited Metal Properties
3.1 Chemical Composition (%)
| Composition | C | Mn | Si | S | P | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|---|
| Guaranteed Value | ≤0.15 | 0.5-2.5 | ≤0.9 | ≤0.03 | ≤0.04 | 28-32 | ≤0.75 | 8.0-10.5 | ≤0.75 |
3.2 Mechanical Properties
| Test Item | Tensile Strength (Rm) | Elongation (A) |
|---|---|---|
| Guaranteed Value | ≥660MPa | ≥22% |
4. Welding Operation Guide
Electrode Pre-treatment: Bake the electrode at 250°C for 1 hour before use to remove moisture from the coating and avoid pores in the weld.
Current Selection: DC electrode positive (DC+) power supply is preferred. The current must be strictly matched to the electrode diameter (refer to the "Core Specification Parameters" table) and should not be too high, so as to prevent coating peeling and coarse weld grains.
Welding Positions: Supports multi-position welding such as flat welding (H), horizontal welding (OH), overhead welding (HF), vertical welding (F) and vertical down welding (VU).
5. Packaging and Delivery
5.1 Packaging Specifications
Basic Packaging: 5kg/plastic bag + inner box, 4 inner boxes (20kg)/carton, 1 ton/pallet;
Customization Service: Supports adjusting the packaging method according to customer needs to adapt to different storage and transportation conditions.
5.2 Delivery Cycle
Regular Cycle: Delivery within 25 days after order confirmation;
Express Delivery: Some regular specification products can be delivered within 8-25 days.
6. Service and Support
Free Samples: Provides free samples to facilitate customers to conduct welding tests before bulk purchase and verify product adaptability;
OEM Service: Supports OEM customization, and can adjust product logos and parameters according to customers' brand and technical requirements;
After-sales Guarantee: Relies on the ISO 9001 quality management system to ensure stable product quality and provide technical consultation and problem-solving solutions.
7. Application Scenarios
Welding of high-carbon steel, tool steel, high-temperature steel and armor steel;
Welding of dissimilar steel, duplex stainless steel and Cr29Ni9 cast steel;
Welding of "problematic steel" (easily cracked and difficult-to-weld materials) such as mining machinery (ball mill iron parts), heavy equipment and high-temperature working condition equipment.
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