AK-EB3R Submerged Arc Welding Wire for Heat-Resistant Steels.
A submerged arc welding wire formulated for pearlitic heat-resistant steels with low impurity levels, good low-temperature toughness, and low susceptibility to temper embrittlement.
Product Overview
AK-EB3R is a submerged arc welding wire designed for welding pearlitic heat-resistant steels with low levels of sulfur and phosphorus. Its chemical composition ensures good low-temperature toughness and reduced sensitivity to temper embrittlement, making it suitable for service conditions requiring reliable mechanical performance after post-weld heat treatment.
It is recommended to be used with matching fluxes such as AKJ150, and is intended for applications involving heat-resistant steels like ASME SA387 Gr.22 Class 2 and 12Cr2Mo1R. The wire meets the EN ISO 21952-A:S CrMo2 and AWS A5.23 EB3R GB/T —— standards.
Application: he matching flux (such as AKJ150, etc.) is suitable for welding of heat resistant steels such as ASME SA387 Gr.22 Class 2, 12Cr2Mo1R, etc.
Key Benefits
Low Impurity Content
The wire has sulfur and phosphorus levels at or below 0.030 percent, reducing the risk of hot cracking and improving weld metal cleanliness.
Good Low-Temperature Toughness
Impact values of at least 27 J at minus 30 degrees C ensure reliable performance in low-temperature service environments.
Low Sensitivity to Temper Embrittlement.
The controlled composition minimizes the risk of embrittlement during post-weld heat treatment, supporting long-term integrity in high-temperature applications.
Compatibility with Matching Fluxes.
When used with compatible fluxes like AKJ150, AK-EB3R delivers consistent weld metal properties and stable arc performance during submerged arc welding.
Where It Is Used
- Welding of heat-resistant steels in pressure vessels and boilers.
- Fabrication of components for power plants and petrochemical facilities.
- Construction of equipment requiring post-weld heat treatment (PWHT)
- Joining of ASME SA387 Gr.22 Class 2 and 12Cr2Mo1R steels.
Who It Is For
- Welding consumable distributors supplying materials for high-temperature applications.
- Pressure vessel and boiler manufacturers requiring consistent filler metal chemistry.
- Petrochemical and power plant maintenance teams working with heat-resistant steels.
- Fabricators of industrial equipment exposed to elevated temperatures.
Problems It Solves
- Weld metal embrittlement after post-weld heat treatment due to high impurity or alloy content.
- Inconsistent mechanical properties in heat-resistant steel welds caused by mismatched wire and flux combinations.
- Difficulty in achieving required impact toughness at low temperatures when using standard welding wires.
Specifications
Published by the factory for AK-EB3R. 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:S CrMo2 |
| Classification 2 | AWS A5.23 EB3R GB/T —— |
| Element | Content |
|---|---|
| C | 0.05-0.15 |
| Si | 0.30 |
| Mn | 0.40-1.20 |
| S | ≤0.030 |
| P | ≤0.030 |
| Cr | 2.25-3.0 |
| Mo | 0.90-1.10 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 620-760 |
| Yield Stress (MPa) | ≥540 |
| Elongation (%) | ≥17J |
| Impact values (J) | ≥27J/-30℃ PWHT(℃*h) -620*1: 690*6 |
Technical Features
- Chemical composition: C 0.05-0.15%, Si 0.30%, Mn 0.40-1.20%, S ≤0.030%, P ≤0.030%, Cr 2.25-3.0%, Mo 0.90-1.10%
- Deposited metal tensile strength: 620-760 MPa.
- Yield stress: at least 540 MPa.
- Elongation: at least 17 percent.
- Impact toughness: at least 27 J at minus 30 degrees C.
- Post-weld heat treatment condition: 620*1: 690*6, with impact values of 690 J at minus 30 degrees C.
Use Guide
- Use AK-EB3R with matching fluxes such as AKJ150 to ensure consistent weld metal properties and process stability.
- Ensure the wire and flux are stored dry and protected from moisture before use.
- Clean joint surfaces of rust, oil, paint, and moisture prior to welding to avoid porosity and contamination.
- Follow recommended welding parameters for the specific application and joint configuration.
How It Compares
AK-EB3R is a pearlitic heat-resistant welding wire designed for high-temperature service and post-weld heat treatment. It differs from standard mild steel wires by having higher chromium and molybdenum content and lower sulfur and phosphorus levels. It is not intended for use on non-heat-resistant steels. When compared to other Cr-Mo wires, its low impurity levels and controlled composition reduce the risk of temper embrittlement after PWHT.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-EB3R Questions
What standards does AK-EB3R meet?
Which fluxes are recommended for use with AK-EB3R?
What are the mechanical properties of the deposited metal?
What is the impact toughness after post-weld heat treatment?
What packing is AK-EB3R supplied in?
Can we test AK-EB3R before placing a production order?
Request a Quotation for AK-EB3R
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.