AK-ER120S-G Solid Welding Wire for Nuclear and Pressure Vessel Applications.
A solid gas-shielded welding wire designed for low-alloy steel in nuclear power equipment and pressure vessel manufacturing, maintaining excellent mechanical properties after long-term heat treatment.
Product Overview
AK-ER120S-G is a solid welding wire used with argon-rich shielding gas (80% Ar + 20% CO2) for gas metal arc welding of low-alloy steel in critical applications.
It is formulated for use in nuclear power equipment and pressure vessel manufacturing, where welds must retain mechanical integrity after prolonged exposure to high temperature conditions.
The wire delivers good process performance and consistent mechanical properties, particularly in the heat-treated condition, ensuring reliable performance in demanding service environments.
Application: It is mainly used for the welding of low-alloy steel specially used for the manufacture of nuclear power equipment, and can also be used for the manufacture of pressure vessels.
Key Benefits
Excellent Heat Treatment Resistance.
The weld metal maintains its mechanical properties after long-term heat treatment, making it suitable for components requiring post-weld heat treatment in nuclear and pressure vessel applications.
Stable Process with Argon-Rich Gas.
When used with 80% Ar + 20% CO2 shielding gas, AK-ER120S-G provides a stable arc and consistent weld bead with low spatter and good penetration.
Low Carbon and Controlled Impurities.
With a carbon content of 0.060% and sulfur at 0.006%, the wire supports high cleanliness and reduced risk of cracking in critical welds.
Compliant with International Standards.
AK-ER120S-G meets EN ISO 16834-A: G894 Mn3Ni1CrMoM, AWS A5.28 ER120S-G, and GB/T8110 ER80-G classifications.
Where It Is Used
- Welding of low-alloy steel in nuclear power equipment manufacturing.
- Fabrication of pressure vessels requiring high weld integrity after heat treatment.
- Critical structural joints in high-integrity industrial systems.
Who It Is For
- Welding consumable distributors supplying materials for nuclear and pressure vessel projects.
- Fabricators of high-integrity equipment requiring consistent, certified welding wire.
- Engineering teams specifying materials for components exposed to long-term thermal cycling.
Problems It Solves
- Ensuring weld metal mechanical properties are maintained after long-term heat treatment in critical components.
- Sourcing a single, certified solid wire that meets multiple international standards for nuclear and pressure vessel use.
- Reducing the risk of weld defects from impurities in the filler metal, especially sulfur and carbon.
Specifications
Published by the factory for AK-ER120S-G. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO 16834-A: G894 Mn3Ni1CrMoM AWS A5.28 ER120S-G GB/T8110 ER80-G |
| Element | Content |
|---|---|
| C | 0.060 |
| Si | 0.52 |
| Mn | 1.65 |
| S | 0.006 |
| P | 0.011 |
| Other | Moderate |
Mechanical property data for this grade is not published on the factory datasheet. Ask our technical team for the test record before you qualify it.
Technical Features
- Solid welding wire for gas metal arc welding with argon-rich shielding gas (80% Ar + 20% CO2)
- Chemical composition: C 0.060%, Si 0.52%, Mn 1.65%, S 0.006%, P 0.011%, other elements in moderate amounts.
- Classified to EN ISO 16834-A: G894 Mn3Ni1CrMoM, AWS A5.28 ER120S-G, and GB/T8110 ER80-G.
- Designed for use in low-alloy steel applications requiring high heat treatment resistance.
Use Guide
- Use with shielding gas mixture of 80% Ar + 20% CO2 for optimal arc stability and weld quality.
- Ensure the wire is stored in a dry, sealed environment to prevent moisture absorption before use.
- Clean base metal surfaces of oil, rust, paint, and moisture prior to welding to avoid porosity and contamination.
- Follow recommended welding parameters for the specific application to achieve consistent mechanical properties.
How It Compares
AK-ER120S-G is a solid wire for gas-shielded welding of low-alloy steel, differing from flux-cored wires in its clean weld deposit and lack of slag. It is not intended for use with CO2-only shielding gas.
Related Grades
Other welding wire in the same family.
AK-ER120S-G Questions
What shielding gas is recommended for AK-ER120S-G?
Which standards does AK-ER120S-G meet?
What are the key chemical elements in AK-ER120S-G?
Can AK-ER120S-G be used in pressure vessel fabrication?
What packing is AK-ER120S-G supplied in?
Can we test AK-ER120S-G before placing a production order?
Request a Quotation for AK-ER120S-G
Send the diameter, the quantity and the destination port. Our technical team replies with packing, pricing and the data you need to qualify the grade.