AK-H08CrMoVA 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 impact toughness when used with matching fluxes.
Product Overview
AK-H08CrMoVA 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 compatible fluxes like SJ101 or HJ350 to produce weld metal with excellent mechanical properties.
The wire's chemical composition includes 1.0-1.3% Cr, 0.50-0.70% Mo, and 0.15-0.35% V, which supports the formation of a stable ferritic-pearlitic microstructure in the weld metal. This composition ensures good high-temperature strength and creep resistance in service conditions.
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 Weld Metal.
When used with the recommended flux, the deposited metal achieves tensile strength between 550 MPa and 700 MPa, yield stress of at least 470 MPa, and impact energy of at least 27 J at 25 degrees C.
Controlled Chemical Composition for Heat-Resistant Applications.
The wire contains 0.10% C, 0.15-0.35% Si, 0.40-0.70% Mn, and 0.30% Ni, with sulfur and phosphorus limited to 0.030% maximum, ensuring low segregation and good weldability in high-temperature service environments.
Compatibility with Standard Fluxes.
AK-H08CrMoVA is designed to be used with fluxes such as SJ101 and HJ350, which are commonly used in industrial welding of heat-resistant steels, enabling consistent performance across production batches.
Suitable for Critical Structural Applications.
The wire is intended for welding components in power plants, petrochemical facilities, and other high-temperature environments where long-term stability and mechanical integrity are required.
Where It Is Used
- Welding of 12Cr1MoV steel and similar 1.0%Cr-0.5%Mo-0.25%V pearlitic heat-resistant steels.
- Pressure vessels and piping in power generation and petrochemical plants.
- High-temperature structural components requiring creep strength and impact resistance.
- Fabrication and repair of boiler tubes and headers.
Who It Is For
- Welding consumable distributors supplying heat-resistant welding materials.
- Power plant and petrochemical contractors requiring consistent filler metal for high-temperature service.
- Fabricators working with 12Cr1MoV and similar heat-resistant steels in industrial construction.
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 integrity in high-temperature service.
- Reducing the risk of weld failure due to insufficient impact toughness or low yield strength in the deposited metal.
Specifications
Published by the factory for AK-H08CrMoVA. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO —— AWS —— GB/T 12470 F55P2-H08CrMoVA |
| Element | Content |
|---|---|
| C | 0.10 |
| Si | 0.15-0.35 |
| Mn | 0.40-0.70 |
| S | ≤0.030 |
| P | ≤0.030 |
| V | 0.15-0.35 |
| Cr | 1.0-1.3 |
| Mo | 0.50-0.70 |
| Ni | 0.30 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 550-700 |
| Yield Stress (MPa) | ≥470 |
| Elongation (%) | ≥20 |
| Impact values (J) | ≥27J/25℃ |
Technical Features
- Chemical composition: C 0.10%, Si 0.15-0.35%, Mn 0.40-0.70%, S ≤0.030%, P ≤0.030%, V 0.15-0.35%, Cr 1.0-1.3%, Mo 0.50-0.70%, Ni 0.30%
- Deposited metal tensile strength: 550-700 MPa.
- Yield stress: at least 470 MPa.
- Elongation: at least 20 percent.
- Impact energy: at least 27 J at 25 degrees C.
- Supplied to EN ISO —— AWS —— GB/T 12470 F55P2-H08CrMoVA standards.
Use Guide
- Select the appropriate flux (e.g., SJ101, HJ350) based on the base metal and service requirements.
- Ensure the wire and flux are stored in dry conditions to prevent moisture absorption.
- Clean the joint surfaces of oil, rust, and scale before welding to avoid porosity and inclusions.
- Follow recommended welding parameters for current, voltage, and travel speed to achieve consistent bead profile and mechanical properties.
How It Compares
AK-H08CrMoVA is a 1.0%Cr-0.5%Mo-0.25%V series submerged arc welding wire intended for heat-resistant steels. It differs from low-alloy wires like H08Mn2SiA in its higher chromium and molybdenum content, which enhances high-temperature strength and creep resistance. Unlike basic fluxes used for low-hydrogen applications, AK-H08CrMoVA is paired with standard fluxes like SJ101 and HJ350, which are suitable for high-deposition-rate welding in industrial settings.
Related Grades
Other welding wire in the same family.
AK-H08CrMoVA Questions
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