Products
E7018
AWS:
AWS A5.1
Category:
Description
Chemical components
| C | Mn | Si | S | P | Al | Cr | Ni | Mo | Cu | V | Nb | N |
| 0.12 | 1.6 | 0.75 | 0.035 | 0.035 | —— | —— | —— | —— | —— | —— | —— | —— |
Product Description
E7018 is a low-hydrogen, iron powder electrode conforming to AWS A5.1/ASME SFA 5.1 specifications, featuring a basic coating with mineral-based flux. Designed for all-position welding (including vertical-down for some brands), compatible with AC and DCEP polarity. The coating contains limestone and other low-moisture ingredients to produce weld deposits with low hydrogen content (H4R classification ≤4 mL/100g).
Features
▪ Low Hydrogen Content: Basic coating minimizes hydrogen-induced cracking, suitable for high-restraint joints and thick sections.
▪ High Deposition Rate: Iron powder coating provides ~110-130% metal recovery with high deposition efficiency.
▪ Excellent Mechanical Properties: Tensile strength 70,000 psi (480 MPa) minimum; exceptional low-temperature toughness with Charpy V-notch values of 20-27 ft-lbs at -50°F (-46°C) for E7018-1 variant.
▪ Smooth Arc Operation: Quiet arc with low spatter; easy slag removal for radiographic quality welds.
▪ All-Position Capability: Suitable for flat, horizontal, vertical-up, vertical-down, and overhead welding positions.
Applications
▪ Structural Steel: Bridges, buildings, offshore platforms, and heavy steel structures.
▪ Pressure Vessels: Boilers, nuclear reactor shells, and high-pressure piping.
▪ Marine Industry: Shipbuilding, frigates, and submarines.
▪ Heavy Equipment: Drilling rigs, earth-moving machinery, mining equipment, and rail wagons.
▪ Dynamic Loading Applications: Structures subjected to impact and cyclic stresses.
Company Introduction
Hangzhou Lin'an Dayang Welding Materials Co., Ltd., a professional welding materials manufacturer founded in 1995, adheres to the core philosophy of "Innovative R&D, Precision Manufacturing, Meticulous Service".
With over 30 years of industry expertise, we have continuously increased investment in production upgrading and technological R&D, solidifying our reputation as a trusted supplier of industrial welding consumables globally.
Production Capacity & Product Strength
Equipped with multiple advanced automated production lines, we boast an annual output of 5,000 tons of premium welding products.
Our core portfolio covers nickel-based welding wires, stainless steel welding wires, flux-cored welding wires and high-performance specialty electrodes.
Backed by a professional R&D team with multiple patents, we also provide tailored OEM/ODM welding solutions to meet clients’ diverse application needs.
After-sales service process
FAQS
What is the primary difference between E6013 and E6012?
E6013 contains potassium in its coating while E6012 contains sodium. This allows E6013 to operate on AC and DCEN, whereas E6012 only supports DCEP. E6013 also produces smoother bead appearance and quieter arc compared to E6012.
What welding current and polarity should be used?
E6013 works on AC, DCEP, and DCEN. For thin metals, use DCEN for least penetration; AC provides medium penetration. Typical current ranges: 2.5mm (50-90A), 3.2mm (80-130A), 4.0mm (130-210A), 5.0mm (170-230A). Decrease amperage by 15% for out-of-position welding.
Is post-weld heat treatment required for E6013?
No, E6013 does not require post-weld heat treatment. However, if electrodes have been exposed to moisture, re-dry at 120-150°C for 30-60 minutes before use to prevent porosity. Storage at 60-100°F with <50% humidity is recommended.
What are the typical mechanical properties?
Tensile strength: 430-540 MPa; Yield strength: 330-450 MPa; Elongation: 22-30%; Charpy V-notch impact: 50-80 J at 0°C (typical values). X-ray flaw detection level: II.
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