AK-ER62-B3 M Gas Shielded Welding Wire for 2.25% Cr-1% Mo Heat-Resistant Steel.
A gas shielded welding wire designed for 2.25% Cr-1% Mo heat-resistant steel with good mechanical properties in service temperatures below 550℃.
Product Overview
AK-ER62-B3 M is a gas shielded welding wire for 2.25% Cr-1% Mo pearlitic heat-resistant steel. It is used with shielding gas Ar+(1%-5%)CO2 and delivers good mechanical properties in the deposited metal.
The wire is suitable for welding 2.25% Cr-1% Mo heat-resistant steel, such as T/P22 and 15Cr2Mo1, in applications where the working temperature remains below 550℃. Common uses include conventional thermal power stations, petrochemical equipment, and related structures.
Application: It is suitable for the welding of 2.25%Cr- 1%Mo heat-resistant steel (s uch as T/P22, 15Cr2Mo1, etc.) whose working temperature is below 550℃ . It is oft en used in the welding of conventional thermal power stations, petrochemical equip ment and other structures.
Key Benefits
Suitable for 2.25% Cr-1% Mo Heat-Resistant Steel.
The chemical composition of AK-ER62-B3 M matches the requirements for 2.25% Cr-1% Mo steel, ensuring compatibility and stable performance in high-temperature service.
Good Mechanical Properties in Deposited Metal.
The wire delivers consistent mechanical properties in the weld metal, supporting structural integrity under operating conditions below 550℃.
Compatible with Ar+(1%-5%)CO2 Shielding Gas.
It performs reliably with mixed shielding gas, offering stable arc and good weld bead appearance in various welding positions.
Complies with EN ISO 21952-A and AWS A5.18 Standards.
AK-ER62-B3 M meets the EN ISO 21952-A:G CrMo2Si and AWS A5.18 ER90S-B3 classifications, ensuring traceable performance for industrial applications.
Where It Is Used
- Welding of 2.25% Cr-1% Mo heat-resistant steel (e.g. T/P22, 15Cr2Mo1)
- Structural components in conventional thermal power stations.
- Petrochemical equipment and pressure vessels operating below 550℃.
- High-temperature piping and boiler systems.
Who It Is For
- Welding consumable distributors supplying materials for heat-resistant steel applications.
- Fabricators and EPC contractors working on power plant and petrochemical projects.
- Maintenance teams responsible for repair welding in high-temperature environments.
Problems It Solves
- Matching filler metal chemistry to 2.25% Cr-1% Mo base metal to ensure weld metal properties meet code requirements at elevated temperatures.
- Sourcing a single, certified welding wire that meets both EN ISO 21952-A and AWS A5.18 standards for critical applications.
- Obtaining technical guidance on gas shielding and welding parameters for consistent weld quality in heat-resistant steel joints.
Specifications
Published by the factory for AK-ER62-B3. 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 CrMo2Si AWS A5.18 ER90S-B3 |
| Classification 2 | GB/T 8110 ER62-B3 |
| Element | Content |
|---|---|
| C | 0.07-0.12 |
| Mn | 0.4-0.7 |
| P | 0.025 |
| S | 0.025 |
| Si | 0.4-0.7 |
| Cr | 1.2-2.3 |
| Mo | 0.9-1.2 |
| Cu | 0.35 |
| Ni | 0.25 |
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
- Gas shielded welding wire for 2.25% Cr-1% Mo pearlitic heat-resistant steel.
- Shielding gas: Ar+(1%-5%)CO2
- Chemical composition: C 0.07-0.12%, Mn 0.4-0.7%, P 0.025%, S 0.025%, Si 0.4-0.7%, Cr 1.2-2.3%, Mo 0.9-1.2%, Cu 0.35%, Ni 0.25%
- Complies with EN ISO 21952-A:G CrMo2Si and AWS A5.18 ER90S-B3 standards.
- Suitable for service temperatures below 550℃.
Use Guide
- Select shielding gas as Ar+(1%-5%)CO2 based on joint configuration and required weld metal properties.
- Clean base metal surfaces of oil, rust, paint, and moisture before welding to avoid defects.
- Follow recommended welding parameters for the specific application to ensure consistent bead profile and mechanical performance.
- Store the wire in dry conditions and avoid exposure to humidity to prevent hydrogen pickup.
How It Compares
AK-ER62-B3 M is classified under AWS A5.18 ER90S-B3 and EN ISO 21952-A:G CrMo2Si, making it suitable for 2.25% Cr-1% Mo heat-resistant steel. It differs from standard low alloy wires by having a higher chromium and molybdenum content to maintain strength and creep resistance at temperatures up to 550℃. It is not intended for use with pure CO2 or pure Ar shielding gases, as the mixed gas provides optimal arc stability and weld metal quality.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-ER62-B3 Questions
What standards does AK-ER62-B3 M meet?
What is the chemical composition of AK-ER62-B3 M?
What base metals is this wire suitable for?
What shielding gas should be used?
What packing is AK-ER62-B3 supplied in?
Can we test AK-ER62-B3 before placing a production order?
Request a Quotation for AK-ER62-B3
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.