E7018 vs ER316L: 30% composition overlap. Significantly different materials serving different application areas.
E7018 vs ER316L
Side-by-side chemical composition and mechanical property comparison.
Overview
E7018
The world's most widely used low-hydrogen SMAW (stick) welding electrode. Iron powder + calcium fluoride coating produces smooth, easy-to-control arc with minimal spatter and easy slag removal. Low hydrogen designation prevents hydrogen-induced cracking in structural joints. All-position welding (1 = flat, horizontal, vertical, overhead). AC or DCEP. Minimum 480 MPa tensile strength. Must be stored in heated ovens (250-300°F) to prevent moisture pickup. Used for structural steel, bridges, buildings, pressure vessels, and all code-compliant fabrication per AWS D1.1.
ER316L
Low-carbon molybdenum-bearing austenitic stainless steel welding wire — the standard filler for joining 316 and 316L stainless steels. 2-3% Mo provides superior pitting and crevice corrosion resistance versus ER308L, especially in chloride environments. Low carbon (≤0.03%) prevents sensitization. Used for TIG and MIG welding of chemical processing equipment, marine hardware, pharmaceutical vessels, pulp & paper digesters, and offshore piping. Also used for dissimilar joints between 304 and 316 grades.
| E7018 | ER316L | |
|---|---|---|
| Material Number | — | — |
| Category | Welding | Welding |
| Standard | AWS A5.1 | AWS A5.9 |
Chemical composition (wt%)
| Element | E7018 | ER316L | Overlap |
|---|---|---|---|
| C | ≤ 0.15% | ≤ 0.03% | OK |
| Si | ≤ 0.75% | 0.3–0.65% | OK |
| Mn | ≤ 1.6% | 1–2.5% | Partial |
| P | ≤ 0.04% | ≤ 0.03% | OK |
Mechanical properties
| Property | E7018 | ER316L | Unit |
|---|---|---|---|
| tensile_strength | ≥ 480 | ≥ 490 | MPa |
| yield_strength | ≥ 400 | ≥ 310 | MPa |
| elongation | ≥ 22 | ≥ 30 | % |
Compatibility Assessment
E7018 and ER316L have significantly different compositions (30% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is E7018 the same as ER316L?
E7018 and ER316L have a 30% composition overlap. They are generally not directly interchangeable.
Can I replace E7018 with ER316L?
Generally not recommended. The compositions differ significantly (30% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between E7018 and ER316L?
The main differences are in the following elements: Mn, Cr, Mo, Ni. E7018 is a Welding grade, while ER316L is a Welding grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.