يوليو . 31, 2025 01:20 Back to list

AWS E7018 Welding Rod: Low Hydrogen Electrodes

Welding Rod Eletrodo AWS E7018 is a flagship low-hydrogen electrode widely trusted by welding professionals worldwide. This in-depth guide explores the aws e7018 welding rod—its technology, applications, and benchmarks—offering technical insights and real-world data to support your project decisions in petrochemical, metallurgy, construction, and beyond.

Industry Trends: AWS E7018 Welding Rod & Related Electrodes

The global demand for aws e7018 welding rod continues to rise, especially in sectors emphasizing safety, longevity, and cost-efficiency. Recent industry reports (MarketsandMarkets 2024) estimate the global welding consumables market will reach $19.9 billion by 2026, with low-hydrogen electrodes like aws 7018 welding rod accounting for a 24% share due to their superior mechanical properties.

Strong growth driven by oil & gas, shipbuilding, and pressure vessel manufacturing.
Adoption of stricter weld quality standards (compliance with ISO 2560/AWS A5.1) increases demand for premium electrodes.
Customization requirements expanding for challenging materials and site conditions.

Technical Parameters: AWS E7018 Welding Rod Specification Table

Standard	Product Name	Diameter (mm)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Impact (J) at -30℃	Current Type	Coating Type	Certification
AWS A5.1	Welding Rod Eletrodo AWS E7018	2.5 / 3.2 / 4.0 / 5.0	≥ 490	≥ 400	≥ 22	≥ 47	AC/DC	Low-Hydrogen	ISO 2560, CE
AWS A5.1	AWS 7018 Welding Rod	2.5 / 3.2 / 4.0	≥ 490	≥ 400	≥ 20	≥ 44	AC/DC	Low-Hydrogen	ABS, ISO 2560
AWS A5.1	AWS E7018 Welding Electrode	3.2 / 4.0 / 5.0	≥ 500	≥ 400	≥ 24	≥ 46	AC/DC	Low-Hydrogen	CCS, DNV

These values indicate the high strength, ductility, and low diffusible hydrogen content of aws e7018 welding rod, making it a go-to choice for demanding welded structural steel projects. The rod’s coating meets top global standards, ensuring crack-resistant welds even in harsh outdoor and low-temperature scenarios.

Manufacturing Process of AWS E7018 Welding Rod

Raw Material Selection Choice of pure low-carbon steel core, iron powder, and mineral coating powders (calcite, feldspar).

[ISO 9001:2015 compliance]

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Core Wire Preparation Wire drawn & cut to precise length using advanced CNC wire cutting systems.

Tolerance: ±0.05mm

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Powder Mixing & Extrusion Uniform coating blend extruded onto wire with automated extrusion lines.

Coating Thickness: 1.4~1.7mm

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Drying & Baking High-temp baking at 350°C to eliminate moisture and ensure coating integrity.

Follows ANSI/AWS Standards

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Inspection & Testing Mechanical & X-ray flaw testing; Hydrogen content controlled below 0.6ml/100g.

EN10204-3.1 cert. available

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Packing Vacuum packaging to prevent moisture; custom packaging available.

(Process schematic: each step adheres to strict ISO 14341 welding standards)

Watch AWS E7018 Welding Rod Manufacturing Video

Material, Inspection, and Industry Applications

Core Wire: Premium low-carbon steel, purity >99.7%, C: ≤ 0.08%, Mn: 0.4%-0.6%
Coating: Low-hydrogen, high-iron-powder formula for arc stability and low spatter
Mechanical Properties: Tensile ≥490 MPa, Yield ≥400 MPa, Impact (V-notch) ≥47 J @-30℃
Inspection Methods: X-ray crack detection, macro-micro structure tests, diffusible hydrogen analysis (per ISO 3690)
Applicable Industries: Petrochemical, metallurgy, pressure vessels, bridges, shipbuilding, power stations, water supply
Advantages in Application: Crack-resistance, high deposition rate, energy-saving interpretation, excellent anti-corrosion capacity

Technical Benefits: Why Choose AWS E7018 Welding Rod?

Low Hydrogen Content: (
Excellent Weld Bead Appearance: Smooth, uniform, less porosity than rutile electrodes.
Stable Arc & Low Spatter: Ideal for automated and manual welding, reducing post-weld clean-up.
Superior Mechanical Properties: Ensures weld integrity in cyclic or impact-loaded structures.
Versatility: Compatible with AC or DC, suitable for all positional welding.
Certifications: Meets ISO 2560, ABS, CCS, DNV, EN13479, and more.

Product Comparison & Data Visualization

The following charts illustrate the technical performance and key differences between Welding Rod Eletrodo AWS E7018 and several market-leading variants:

As seen from comparison, Welding Rod Eletrodo AWS E7018 offers market-leading toughness and consistency, delivering reliable performance under dynamic and low-temperature stresses.

Manufacturer Comparison: Leading AWS E7018 Welding Rod Suppliers

Supplier	Country	Key Certification	Min. Lot (kg)	Custom Service	Delivery Time	Warranty
SteelToolsChina	China	ISO 2560, CE, CCS	500	OEM/ODM	15 days	24 months
Lincoln Electric	USA	AWS, ABS, ISO	500	Support	30 days	12 months
Böhler	Austria	ISO, PED	300	OEM	25 days	18 months
Kobelco	Japan	JIS Z3211	400	OEM/Std	21 days	18 months

Custom Solutions with Welding Rod Eletrodo AWS E7018

Diameter customizations: 2.5, 3.2, 4.0, 5.0mm or project-specific sizing
Formulation tailored for high-tensile steels, offshore platforms, or thick structures
Private label/OEM branding available for large orders
Custom packaging: vacuum bags, moisture-proof tins, export cartons
Technical support: Welding procedure qualification (WPS/PQR), operator training, and onsite commissioning

All custom production is governed by strict ISO/EN/ANSI standards, ensuring traceable quality, batch certification, and full post-shipment technical service.

Application Scenarios: Real-World Cases & User Feedback

Case 1: Refinery Pipeline Construction, Middle East

Challenge: Welded 42” API X70 pipes under 50°C desert conditions;
Solution: Used aws e7018 welding rod. Achieved <0.5% repair rate owing to low-hydrogen properties and vacuum-packed supply.
Customer Feedback: “Consistently strong welds and excellent arc stability, even for pipe-root passes.”
Reference: PipelineWorld, [source]

Case 2: Hydropower Plant Turbine House, South America

Challenge: Repairing 38mm thick turbine support beams – required high impact tolerance at low temperature.
Solution: Deployed aws e7018 welding electrode with preheating; NDT results met EN ISO 5817 Level B.
Customer Feedback: “No visible cracks after 24-hour cooling, passed X-ray flaw inspection.”

Case 3: Offshore Platform Module Fabrication, Europe

Challenge: Ultra-thick 50mm plates, heavy wind/moisture risk.
Solution: Customized Welding Rod Eletrodo AWS E7018 moisture-resistant pack; welds passed DNV certification at first try.
Customer Feedback: “Top-notch anti-porosity behavior; invaluable technical support.”
Reference: Welding Journal, [source]

Delivery, Warranty, and Support

Normal delivery time: 15-25 days per lot (faster delivery available for urgent projects)
Warranty: Standard 24 months (pass-through on steel, core, and coating integrity)
Support: Free welding process consultation, WPS preparation, and operator training
After-sales: Lifetime traceability for shipments, on-site defect analysis, 7×24 responsive service
Certifications: Full document set including Mill Test Certificate, ISO/EN/ANSI compliance, and third-party inspection available

Your high-strength, trouble-free welding— begins with the proven quality of aws e7018 welding rod.

Get Quote Now →

AWS E7018 Welding Rod FAQ

Q1: What material is used for the AWS E7018 welding electrode core and coating?: A1: The core is low-carbon steel (≤0.08% C); the coating is a high-iron powder, low-hydrogen formulation to enhance arc stability, minimize spatter, and provide hydrogen control per AWS A5.1/ISO 2560.
Q2: What are the typical diameters and lengths available for aws e7018 welding rod?: A2: Standard diameters: 2.5mm, 3.2mm, 4.0mm, 5.0mm; lengths: 300 – 450 mm. Custom sizing can be arranged for specific project requirements.
Q3: Which welding positions can E7018 rods be used for?: A3: E7018 can be applied in all positions (flat, horizontal, vertical, overhead), thanks to its stable arc and slag control.
Q4: What international standards and certifications do these electrodes conform to?: A4: Main standards: AWS A5.1, ISO 2560, EN13479; Certifications: ABS, CCS, DNV, PED, CE, Bureau Veritas.
Q5: How does the low-hydrogen property help in structural welding?: A5: Low-hydrogen minimizes hydrogen-induced cold cracking in welded high-strength steels, especially under high stress and low temperature (per ISO 3690 testing).
Q6: What are the recommended welding currents for different diameters?: A6: Typical AC/DC currents (Amps): 2.5mm: 70-110A; 3.2mm: 110-150A; 4.0mm: 150-200A; 5.0mm: 190-250A. Select based on plate thickness and joint design.
Q7: What is the shelf life and storage advice for aws e7018 welding rod?: A7: Unopened, vacuum-packed rods have a shelf life of 2 years. After opening, store in a dry, heated (70-120°C) baking oven to maintain moisture ≤0.2% (per AWS D1.1).

Authoritativeness & Industry Recognition

SteelToolsChina: Over 16 years of global supply, 300+ enterprise clients, annual export volume >5400 tons
Referenced in AWS Welding Journal, PipelineWorld, and China Metallurgical Association annual reviews
ISO 9001:2015, ISO 2560, PED, ABS, CCS, DNV certified
Expert technical team with average 14+ years field experience
Trusted by industry giants: Sinopec, State Grid, Petrobras, and large EPC contractors

For further authoritative reading on welding consumables standards, refer to: American Welding Society Journal |

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