Comprehensive Guide to 7018 Welding Rod: Specifications, Applications, and Selection Tips
Comprehensive Guide to 7018 Welding Rod: Specifications, Applications, and Selection Tips
Blog Article
1. Core Properties and Specifications of 7018 Welding Rod
As a classic low-hydrogen potassium-type electrode, the 7018 welding rod is widely favored for its excellent crack resistance and mechanical properties. Its classification code breaks down as:
Key Specifications:
For a detailed comparison of electrode types, visit our guide on 7018 vs 7014 Electrodes.
2. Amperage Settings and Size Chart
The 7018 rod’s amperage range correlates with diameter. Recommended parameters:
| Diameter (mm) | Amperage Range (A) | Typical Applications |
| 2.6 | 65-90 | Thin sheet repair |
| 3.2 | 90-130 | Structural frames/pipelines |
| 4.0 | 130-170 | Heavy machinery/bridge girders |
| 4.8 | 170-210 | Ship decks/pressure vessels |
Pro Tips:
3. Key Applications and Case Studies
The 7018 electrode excels in high-stress environments:
4. 7018 vs 7014 Electrodes: Critical Differences
| Property | 7018 Electrode | 7014 Electrode |
| Flux Type | Low-hydrogen (anti-crack) | Titania-calcium (easy arc) |
| Welding Positions | All positions | Flat/horizontal dominant |
| Tensile Strength | 482 MPa | 420 MPa |
| Power Supply | DC Reverse Polarity (DCEP) | AC/DC compatible |
| Best For | Dynamic load structures | Aesthetic non-structural work |
Selection Advice:
5. Industry Resources
By mastering the 7018 electrode’s technical nuances, welders can achieve superior structural integrity. Always cross-reference manufacturer datasheets (e.g., Lincoln Electric PDF) for project-specific optimizations.
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