AK-ER55-1CM Gas Shielded Welding Wire for 1%Cr-0.5%Mo Heat-Resistant Steel.
A solid wire for gas shielded welding of 1%Cr-0.5%Mo pearlitic heat-resistant steel, suitable for service temperatures up to 530℃ in power and petrochemical applications.
Product Overview
AK-ER55-1CM is a gas shielded welding wire designed for the welding of 1%Cr-0.5%Mo pearlitic heat-resistant steel. It is suitable for use with argon-rich or CO2 shielding gas and delivers good mechanical properties in the deposited weld metal.
The wire is intended for applications where the service temperature does not exceed 530℃, including conventional thermal power stations, petrochemical equipment, and related structures. It meets the EN ISO 21952-A:G CrMo1Si and AWS A5.18 ER80S-B2 classifications, as well as GB/T 8110 ER55-B2.
Application: It is suitable for the welding of 1%Cr-0.5%Mo heat-resistant steel with a welding working temperature below 530℃, and is often used in the welding of conventional thermal power stations, petrochemical equipment and other structures.
Key Benefits
Suitable for 530℃ Service Temperature.
The wire is formulated for use in structures operating at temperatures up to 530℃, making it appropriate for high-temperature service in power and petrochemical environments.
Good Mechanical Properties in Deposited Metal.
The deposited metal exhibits mechanical properties suitable for the intended service conditions, with a chemical composition tailored to maintain strength and stability in heat-resistant applications.
Compatible with Argon-Rich and CO2 Shielding Gas.
AK-ER55-1CM can be used with argon-rich or CO2 shielding gas, offering flexibility in welding setup and process selection depending on the application and equipment available.
Complies with Multiple International Standards.
The wire is supplied to EN ISO 21952-A:G CrMo1Si, AWS A5.18 ER80S-B2, and GB/T 8110 ER55-B2, supporting global project compliance and interchangeability across specifications.
Where It Is Used
- Welding of 1%Cr-0.5%Mo heat-resistant steel in conventional thermal power stations.
- Fabrication and repair of petrochemical equipment operating at elevated temperatures.
- Construction and maintenance of high-temperature structures in industrial plants.
Who It Is For
- Welding consumable distributors supplying materials for power and petrochemical projects.
- Fabricators and EPC contractors working with 1%Cr-0.5%Mo heat-resistant steel.
- Maintenance teams in power plants and refineries requiring reliable, code-compliant welding wire.
Problems It Solves
- Matching filler metal chemistry to 1%Cr-0.5%Mo heat-resistant steel to ensure weld metal properties meet service requirements up to 530℃.
- Sourcing a single, certified welding wire that meets multiple international standards (EN ISO 21952, AWS A5.18, GB/T 8110) without needing multiple suppliers.
- Ensuring consistent performance with argon-rich or CO2 shielding gas in industrial welding environments.
Specifications
Published by the factory for AK-ER55-1CM. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 21952 -A:G CrMo1Si AWS A5.18 ER80S-B2 |
| Classification 2 | GB/T 8110 ER55-B2 |
| Element | Content |
|---|---|
| C | 0.07-0.12 |
| Mn | 0.4-0.7 |
| P | 0.025 |
| S | 0.025 |
| Si | 0.4-0.7 |
| Cr | 1.2-2.5 |
| Mo | 0.4-0.65 |
| Cu | 0.35 |
| Ni | 0.2 |
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
- Chemical composition: C 0.07-0.12%, Mn 0.4-0.7%, P 0.025%, S 0.025%, Si 0.4-0.7%, Cr 1.2-2.5%, Mo 0.4-0.65%, Cu 0.35%, Ni 0.2%
- Designed for gas shielded welding with argon-rich or CO2 shielding gas.
- Intended for service temperatures up to 530℃.
- Complies with EN ISO 21952-A:G CrMo1Si, AWS A5.18 ER80S-B2, and GB/T 8110 ER55-B2 standards.
Use Guide
- Select shielding gas based on joint type and equipment: argon-rich for better arc stability and bead appearance, CO2 for higher deposition rate and deeper penetration.
- Clean joint surfaces thoroughly before welding to remove oil, rust, moisture, and contaminants that may affect weld quality.
- Use recommended welding parameters to maintain consistent arc and avoid defects such as porosity or cracking.
- Store wire in a dry environment to prevent moisture absorption; avoid prolonged exposure to humid conditions.
How It Compares
AK-ER55-1CM is a solid wire for 1%Cr-0.5%Mo heat-resistant steel, suitable for gas shielded welding. It differs from flux-cored wires in that it does not contain flux, resulting in lower spatter and cleaner welds. Compared to basic-coated electrodes, it offers better deposition efficiency and easier handling in automated or semi-automated processes. For applications requiring higher strength or specific impact toughness at low temperatures, a different filler metal may be required.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-ER55-1CM Questions
What are the chemical composition limits for AK-ER55-1CM?
Which standards does AK-ER55-1CM meet?
What is the maximum service temperature for the welded joint?
Can this wire be used with CO2 or argon-rich gas?
What packing is AK-ER55-1CM supplied in?
Can we test AK-ER55-1CM before placing a production order?
Request a Quotation for AK-ER55-1CM
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.