AWS E8015-G High-Quality Low-Alloy Steel Welding Electrode
1. Product Overview
AWS E8015-G is a premium low-alloy steel welding electrode engineered exclusively for medium carbon steel and low-alloy steel structure welding. As a low-hydrogen iron powder electrode (Type LH), it integrates advanced alloying technology to not only minimize hydrogen-induced cracking-one of the most critical defects in high-strength steel welding-but also enhance the post-weld fatigue resistance of joints. Its weld metal exhibits a tensile strength of ≥550MPa and an impact toughness of ≥47J at -30℃, perfectly matching the mechanical performance requirements of Q345, Q460, and other common low-alloy steels. This makes it a preferred choice in key industries such as wind power tower manufacturing, heavy-duty truck frame welding, and offshore platform construction, where long-term structural reliability is non-negotiable.
2. Core Specifications & Parameters
| Parameter Category | Specific Details |
|---|---|
| Model Number | AWS E8015-G (Equivalent to GB/T 5117 E5015-G in Chinese Standards) |
| Material | Low-Alloy Steel (With Micro-Alloying Elements for Grain Refinement) |
| Diameter Specifications | 2.5mm (Recommended for thin-plate root welding), 3.2mm (General structural welding), 4.0mm (Thick-plate fill-pass welding) |
| Length Range | 300mm (2.5mm diameter), 350mm (3.2mm diameter), 400mm (4.0mm diameter) |
| Operating Current | 60-90A (2.5mm), 90-120A (3.2mm), 120-160A (4.0mm) - All compliant with AWS A5.5 |
| Welding Current Type | AC/DC Reverse Polarity (DCEN recommended for optimal arc stability) |
| Operating Temperature | Preheating: 80-150℃ (For steels with carbon equivalent ≥0.45%); Interpass Temp: ≤250℃ |
| Application Scenarios | Medium carbon steel (C≤0.45%) welding, low-alloy high-strength steel welding, post-weld heat treatment (PWHT) compatible structures |
3. Deposited Metal Chemical Composition (Mass Fraction)
| Element Symbol | Content Requirement | Function Description |
|---|---|---|
| C (Carbon) | ≤0.12% | Limits the formation of hard martensite in the heat-affected zone (HAZ), reducing cold crack risk |
| Mn (Manganese) | 1.0%-1.6% | Acts as a deoxidizer, improves weld metal strength, and suppresses sulfur-induced hot cracking |
| Si (Silicon) | 0.3%-0.7% | Enhances molten pool fluidity to prevent undercut defects, while controlling weld spatter |
| S (Sulfur) | ≤0.035% | Strictly restricted to avoid the formation of low-melting-point sulfide inclusions that weaken weld ductility |
| P (Phosphorus) | ≤0.035% | Minimizes the brittleness of weld metal, especially at low temperatures |
| Cr (Chromium) | ≤0.20% | Trace addition to improve high-temperature oxidation resistance of welds |
| Ni (Nickel) | ≤0.30% | Micro-alloying to enhance low-temperature impact toughness of weld metal |
| Mo (Molybdenum) | - | No relevant addition |
| V (Vanadium) | - | No relevant addition |
4. Packaging & Delivery
1. Packaging Specifications
Small-batch packaging: 5kg/box (Vacuum-sealed aluminum foil bag inside, moisture-proof) - Ideal for maintenance workshops or small-batch trial use; 20kg/box (Corrugated carton with moisture-absorbing desiccant) - Suitable for medium-sized projects.
Large-batch packaging: 1 ton/pallet (Stackable galvanized steel pallet, wrapped with stretch film + waterproof cover) - Optimized for container shipping, reducing moisture absorption during long-distance transportation.
Storage Requirement: Keep in a dry warehouse (Relative Humidity ≤60%, Temperature ≥5℃); Unsealed electrodes must be re-baked at 350-400℃ for 1 hour before use.
2. Delivery Cycle & Logistics
Standard Delivery: 25 days after order confirmation and payment (Applicable to regular models with stock).
Rush Order Service: 15-day delivery available for orders over 5 tons (Subject to production schedule confirmation).
Logistics Support: Partner with well-known freight forwarders to provide door-to-door delivery for overseas customers, with customs clearance documents (Commercial Invoice, Packing List, Certificate of Quality) included.
5. Full Range of Brand Products & Application Matching
Beyond AWS E8015-G, Ocean Welding offers a comprehensive low-alloy steel electrode portfolio tailored to diverse industry needs:
AWS E7015-C2L(2): For low-temperature (-40℃) resistant structures (e.g., cryogenic storage tanks), with impact toughness ≥60J at -40℃.
AWS E9015-G / E9016-C1(3): Designed for high-strength steel (690MPa grade) welding, suitable for hydraulic support frames in coal mines.
AWS E10015-D2 / E10015-G(2): Used in offshore oil platforms, with excellent corrosion resistance in marine environments.
AWS E12015-G / E12015-G(2): For ultra-high-strength steel (830MPa grade) welding, ideal for heavy machinery boom structures.
6. Technical Support & After-Sales Service
Pre-Sales Consulting: Our metallurgical engineers provide free material matching advice-simply share your base metal grade and application environment for customized solutions.
On-Site Support: For large-scale projects, we offer on-site welding parameter debugging and operator training to ensure consistent weld quality.
After-Sales Guarantee: If weld defects occur due to product quality issues, we provide free replacement of electrodes and technical guidance to resolve problems.
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