AK-EB3 Submerged Arc Welding Wire for 2.25% Cr-1.0% Mo Heat Resistant Steel.
A submerged arc welding wire formulated for 2.25% Cr-1.0% Mo pearlite heat resistant steel, delivering good mechanical properties when used with the matching flux.
Product Overview
AK-EB3 is a submerged arc welding wire designed for welding 2.25% Cr-1.0% Mo pearlite heat resistant steel. It is intended to be used with a corresponding flux, such as AKJ101, to achieve weld metal with suitable mechanical properties.
The wire's chemical composition includes 2.0-2.5% Cr and 0.90-1.20% Mo, which supports the desired strength and heat resistance in the weld deposit. Carbon content is maintained between 0.05% and 0.15% to balance hardenability and toughness.
AK-EB3 meets the EN ISO 14171-A:S S CrMo2, AWS A5.23 F9P0-EB3-B3, and GB/T 12470 S 62 2 FB-SU2C1M standards, ensuring compatibility with international specifications for heat resistant steel welding.
Application: The combined flux (such as AKJ101, etc.) is used for the welding of 2.25%Cr- 1.0%Mo heat resistant steel.
Key Benefits
Matched Mechanical Properties
When used with the recommended flux, AK-EB3 delivers tensile strength between 620 MPa and 760 MPa, yield stress of at least 540 MPa, and elongation of at least 17%.
Impact Toughness After PWHT.
The weld metal achieves impact values of at least 27 J at minus 20 degrees C after post-weld heat treatment (PWHT) of 620 °C for 1 hour, and 690 °C for 6 hours.
Controlled Chemistry for Heat Resistant Steel.
The composition of AK-EB3, with 2.25% Cr and 1.0% Mo, is tailored to match the base metal, ensuring consistent performance in high-temperature service environments.
Low Sulfur and Phosphorus Content.
Sulfur is limited to 0.030% or less and phosphorus to 0.030% or less, reducing the risk of hot cracking and improving weld soundness.
Where It Is Used
- Welding of 2.25% Cr-1.0% Mo heat resistant steel in power plant and petrochemical equipment.
- Construction and repair of pressure vessels and piping systems operating at elevated temperatures.
- Fabrication of components requiring high strength and creep resistance at moderate temperatures.
Who It Is For
- Welding consumable distributors supplying heat resistant steel welding solutions.
- Fabricators and EPC contractors working with 2.25% Cr-1.0% Mo steel in high-temperature applications.
- Maintenance teams performing repairs on heat-resistant components in industrial plants.
Problems It Solves
- Achieving consistent weld metal properties in 2.25% Cr-1.0% Mo steel when matching filler metal chemistry to base metal requirements.
- Ensuring post-weld heat treatment (PWHT) performance with impact toughness meeting code requirements.
- Reducing the risk of cracking in welds by using low sulfur and phosphorus content wire.
Specifications
Published by the factory for AK-EB3. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 14171-A:S S CrMo2 |
| Classification 2 | AWS A5.23 F9P0-EB3-B3 |
| Classification 3 | GB/T 12470 S 62 2 FB-SU2C1M |
| Element | Content |
|---|---|
| C | 0.05-0.15 |
| Si | 0.80 |
| Mn | 1.20 |
| S | ≤0.030 |
| P | ≤0.030 |
| Cr | 2.0-2.5 |
| Mo | 0.90-1.20 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 620-760 |
| Yield Stress (MPa) | ≥540 |
| Elongation (%) | ≥17J |
| Impact values (J) | ≥27J/-20℃ PWHT(℃*h) -620*1: 690*6 |
Technical Features
- Submerged arc welding wire for 2.25% Cr-1.0% Mo pearlite heat resistant steel.
- Chemical composition: C 0.05-0.15%, Si 0.80%, Mn 1.20%, S ≤0.030%, P ≤0.030%, Cr 2.0-2.5%, Mo 0.90-1.20%
- Tensile strength: 620-760 MPa, Yield stress: ≥540 MPa, Elongation: ≥17%
- Impact toughness: ≥27 J at minus 20 degrees C after PWHT (620 °C × 1 h and 690 °C × 6 h)
- Complies with EN ISO 14171-A:S S CrMo2, AWS A5.23 F9P0-EB3-B3, and GB/T 12470 S 62 2 FB-SU2C1M.
Use Guide
- Use AK-EB3 with a matching flux such as AKJ101 to achieve the specified mechanical properties in the weld deposit.
- Ensure the base metal and weld area are clean and free of oil, rust, moisture, and other contaminants before welding.
- Follow recommended welding parameters for the specific flux and wire combination to maintain weld quality and avoid defects.
- Store the wire in a dry environment and avoid exposure to moisture to prevent hydrogen-induced cracking.
How It Compares
AK-EB3 is a submerged arc welding wire for 2.25% Cr-1.0% Mo steel, designed to be used with a matching flux. It differs from solid wires used in gas metal arc welding (GMAW) in that it relies on flux to shield the weld pool and control chemistry. Compared to other 2.25% Cr-1.0% Mo wires, AK-EB3 has a specific composition tailored to meet the requirements of EN ISO 14171-A:S S CrMo2 and AWS A5.23. It is not intended for use in manual welding processes.
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