AK-H09MnDR Submerged Arc Welding Wire for 1.0%Cr-0.5%Mo-0.25%V Heat-Resistant Steel.
A submerged arc welding wire formulated for 1.0%Cr-0.5%Mo-0.25%V pearlitic heat-resistant steel, delivering weld metal with high strength and toughness when used with matching fluxes.
Product Overview
AK-H09MnDR is a submerged arc welding wire designed for welding 1.0%Cr-0.5%Mo-0.25%V series pearlitic heat-resistant steels, such as 12Cr1MoV. It is used in combination with fluxes like SJ101 or HJ350 to produce weld metal with excellent mechanical properties.
The wire's chemical composition includes 0.12% C, 0.20% Si, 1.20-2.00% Mn, 0.15% Cr, 0.30% Ni, and controlled levels of S and P at ≤0.030% each, supporting strength and toughness in the deposited metal.
Application: With flux (such as SJ101, HJ350, etc.), it is used for welding 1.0%Cr- 0.5%Mo-0.25%V series pearlitic heat-resistant steel, such as 12Cr1MoV steel weld ing metal.
Key Benefits
High Strength and Toughness in Heat-Resistant Weld Metal.
When used with compatible fluxes, AK-H09MnDR delivers a weld metal with tensile strength of at least 500 MPa, yield stress of at least 400 MPa, elongation of at least 20%, and impact energy of at least 27 J at minus 45 degrees C.
Compatibility with Standard Fluxes.
The wire is recommended for use with fluxes such as SJ101 and HJ350, which are commonly used in industrial applications for heat-resistant steel welding.
Controlled Chemistry for Consistent Performance.
The specified composition of C, Si, Mn, Cr, Ni, S, and P ensures consistent mechanical properties and weldability in high-temperature service environments.
Suitable for Industrial Heat-Resistant Steel Applications.
It is specifically intended for welding steels like 12Cr1MoV, which are used in high-temperature and high-pressure environments such as boilers and pressure vessels.
Where It Is Used
- Welding of 1.0%Cr-0.5%Mo-0.25%V pearlitic heat-resistant steels in power plant components.
- Joining of 12Cr1MoV steel in boiler and pressure vessel fabrication.
- Submerged arc welding in industrial maintenance and repair of heat-resistant structures.
- High-temperature service applications requiring weld metal with good toughness at low temperatures.
Who It Is For
- Pressure vessel and boiler manufacturers requiring heat-resistant weld metal.
- Power plant and petrochemical maintenance teams working with high-temperature steels.
- Fabricators of industrial equipment exposed to elevated temperatures.
- Welding distributors supplying consumables for heat-resistant steel welding.
Problems It Solves
- Achieving required mechanical properties in weld metal for 1.0%Cr-0.5%Mo-0.25%V heat-resistant steels without relying on multiple filler metal grades.
- Matching filler metal chemistry to base metal composition to ensure weld performance in high-temperature service.
- Reducing the risk of weld failure due to insufficient toughness at low temperatures in critical joints.
Specifications
Published by the factory for AK-H09MnDR. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO —— AWS A5.23 F7P5 EG-G GB/T —— |
| Element | Content |
|---|---|
| C | 0.12 |
| Si | 0.20 |
| Mn | 1.20-2.00 |
| S | ≤0.030 |
| P | ≤0.030 |
| Cr | 0.15 |
| Ni | 0.30 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥500 |
| Yield Stress (MPa) | ≥400 |
| Elongation (%) | ≥20 |
| Impact values (J) | ≥27J/-45℃ |
Technical Features
- Submerged arc welding wire for 1.0%Cr-0.5%Mo-0.25%V pearlitic heat-resistant steel.
- Chemical composition: C 0.12%, Si 0.20%, Mn 1.20-2.00%, Cr 0.15%, Ni 0.30%, S ≤0.030%, P ≤0.030%
- Deposited metal tensile strength ≥500 MPa, yield stress ≥400 MPa, elongation ≥20%, impact energy ≥27 J at minus 45 degrees C.
- Complies with EN ISO ——, AWS A5.23 F7P5 EG-G, and GB/T —— standards.
- Recommended for use with fluxes such as SJ101 and HJ350.
Use Guide
- Select the appropriate flux (e.g., SJ101 or HJ350) to match the wire and ensure desired weld metal properties.
- Ensure the base metal and joint surfaces are clean of oil, rust, moisture, and contaminants before welding.
- Follow recommended welding parameters for the specific application to maintain weld quality and avoid defects.
- Store the wire in dry conditions to prevent moisture absorption, and re-dry if exposed to humid environments before use.
How It Compares
AK-H09MnDR is a 1.0%Cr-0.5%Mo-0.25%V series submerged arc welding wire, distinct from general-purpose wires like AK-H08MnA. It is specifically formulated for heat-resistant steels requiring high strength and toughness at elevated temperatures. Unlike low-alloy wires for mild steel, it contains controlled levels of Cr, Mo, and V to maintain performance in high-temperature service. It is not intended for use with fluxes not designed for heat-resistant steel welding.
Related Grades
Other welding wire in the same family.
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