E6011 vs ER70S-6: 42% composition overlap. Significantly different materials serving different application areas.
E6011 vs ER70S-6
Side-by-side chemical composition and mechanical property comparison.
Overview
E6011
High-cellulose potassium coated SMAW electrode — the AC-capable version of E6010. Deep penetrating, forceful arc with fast-freeze slag. Runs on both AC and DCEP, making it usable with smaller transformer-type welding machines. Tensile strength 60 ksi (414 MPa). Same cellulose coating system as E6010 — do NOT rebake. Used for pipeline root passes (when DCEP machine not available), field erection, maintenance welding and dirty/rusty steel.
ER70S-6
K11140
The world's most popular solid MIG/TIG welding wire for carbon steel. High manganese (1.40-1.85%) and silicon (0.80-1.15%) content provides superior deoxidizing power — welds cleanly even on slightly rusty or oily steel. Copper-coated for smooth wire feeding. Produces X-ray quality porosity-free welds with excellent bead appearance. Used with CO2 or Ar/CO2 shielding gas. Minimum 480 MPa tensile strength. Used for general fabrication, structural steel, shipbuilding, pressure vessels, automotive, and construction. The go-to wire for every MIG welder.
| E6011 | ER70S-6 | |
|---|---|---|
| Material Number | — | K11140 |
| Category | Welding | Welding |
| Standard | AWS A5.1 | AWS A5.18 |
Chemical composition (wt%)
| Element | E6011 | ER70S-6 | Overlap |
|---|---|---|---|
| C | ≤ 0.12% | 0.06–0.15% | Partial |
| Si | ≤ 0.4% | 0.8–1.15% | No overlap |
| Mn | ≤ 0.6% | 1.4–1.85% | No overlap |
| P | ≤ 0.035% | ≤ 0.025% | OK |
Mechanical properties
| Property | E6011 | ER70S-6 | Unit |
|---|---|---|---|
| Tensile Strength | ≥ 414 | — | MPa |
| Yield Strength | ≥ 331 | — | MPa |
| Elongation | ≥ 22 | — | % |
Compatibility Assessment
E6011 and ER70S-6 have significantly different compositions (42% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is E6011 the same as ER70S-6?
E6011 and ER70S-6 have a 42% composition overlap. They are generally not directly interchangeable.
Can I replace E6011 with ER70S-6?
Generally not recommended. The compositions differ significantly (42% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between E6011 and ER70S-6?
The main differences are in the following elements: C, Si, Mn. E6011 is a Welding grade, while ER70S-6 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.