AK-H08Cr2A1Mo Anti-Corrosion Welding Wire for Heat Exchangers.
A chromium-aluminum-molybdenum alloy welding wire designed to resist hydrogen sulfide and hydrogen chloride stress corrosion cracking in high-demand thermal equipment.
Product Overview
AK-H08Cr2A1Mo is a solid welding wire formulated for use in heat exchangers and similar equipment exposed to corrosive environments. It is classified under GB/T 8110 ER55-G and is intended to extend service life by resisting stress corrosion cracking caused by hydrogen sulfide and hydrogen chloride.
The wire's chemical composition includes controlled levels of carbon, silicon, manganese, copper, chromium, and antimony, with a chromium content of 2.0-2.5 percent and a copper content of 0.35-0.70 percent. These elements contribute to improved resistance to localized corrosion in aggressive service conditions.
Application: It is mainly used to prolong the service life of equipment and resist hy drogen sulfide andhydrogen chloride stress corrosion cracking of chromium-alumin um molybdenum steel.
Key Benefits
Resistance to Stress Corrosion Cracking.
The combination of chromium, copper, and antimony in the wire's composition enhances resistance to hydrogen sulfide and hydrogen chloride stress corrosion cracking, which is critical in heat exchanger applications.
Controlled Carbon and Sulfur Levels.
With carbon limited to 0.06-0.1 percent and sulfur at 0.010 percent, the wire minimizes the risk of intergranular corrosion and ensures good weldability in critical service environments.
High Ductility and Strength.
The deposited metal achieves a tensile strength of 400-600 MPa and a yield stress of at least 250 MPa, with elongation of at least 25 percent, supporting structural integrity under thermal and mechanical loads.
Compliant with GB/T 8110 ER55-G.
The wire is supplied to the GB/T 8110 ER55-G standard, ensuring consistency in mechanical and chemical performance for industrial applications.
Where It Is Used
- Heat exchangers in petrochemical and refining environments.
- Equipment exposed to hydrogen sulfide and hydrogen chloride.
- Components requiring resistance to stress corrosion cracking in high-temperature service.
- Welding of chromium-aluminum-molybdenum steels in demanding industrial systems.
Who It Is For
- Welding consumable distributors supplying specialty alloys for industrial equipment.
- Petrochemical and refinery maintenance teams requiring corrosion-resistant welds.
- Fabricators of heat exchangers and pressure-containing components in aggressive environments.
Problems It Solves
- Welds failing due to stress corrosion cracking in heat exchangers exposed to hydrogen sulfide and hydrogen chloride.
- Inconsistent performance from filler metals not specifically designed for chromium-aluminum-molybdenum steel systems.
- Lack of a single, certified welding wire that meets both mechanical and corrosion resistance requirements for high-demand applications.
Specifications
Published by the factory for AK-H08Cr2A1Mo. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | GB/T 8110 ER55-G |
| Element | Content |
|---|---|
| C | 0.06-0.1 |
| Si | 0.20-0.40 |
| Mn | 0.25-0.50 |
| S | 0.010 |
| P | 0.015 |
| Cu | 0.35-0.70 |
| Cr | 2.0-2.5 |
| Sb | 0.35-0.40 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 400-600 |
| Yield Stress (MPa) | ≥250 |
| Elongation (%) | ≥25 |
| Impact values (J) | —— |
Technical Features
- Solid welding wire supplied to GB/T 8110 ER55-G standard.
- Chemical composition: C 0.06-0.1%, Si 0.20-0.40%, Mn 0.25-0.50%, S 0.010%, P 0.015%, Cu 0.35-0.70%, Cr 2.0-2.5%, Sb 0.35-0.40%
- Deposited metal tensile strength: 400-600 MPa.
- Yield stress: ≥250 MPa.
- Elongation: ≥25%
- Impact values: Not specified in available data.
Use Guide
- Select wire diameter based on joint thickness and welding process requirements. AKWELD offers the wire in standard sizes suitable for GMAW and other semi-automatic processes.
- Ensure base metal and wire surfaces are clean of oil, rust, moisture, and contaminants before welding to maintain corrosion resistance.
- Use recommended welding parameters to avoid excessive heat input, which may affect the microstructure and corrosion performance.
- Store the wire in a dry environment to prevent moisture absorption, especially in humid conditions.
How It Compares
AK-H08Cr2A1Mo is a specialized alloy wire for corrosion resistance in aggressive environments. Unlike standard mild steel wires, it contains chromium and copper to resist specific forms of corrosion. It is not intended for general-purpose welding but for applications where stress corrosion cracking from hydrogen sulfide and hydrogen chloride is a concern. Other ER55-G wires may have different alloying elements and are not guaranteed to offer the same level of resistance.
Related Grades
Other welding wire in the same family.
AK-H08Cr2A1Mo Questions
What standard does AK-H08Cr2A1Mo meet?
What is the chromium content range?
What are the mechanical properties of the deposited metal?
Can I get technical data sheets and packaging details?
What packing is AK-H08Cr2A1Mo supplied in?
Can we test AK-H08Cr2A1Mo before placing a production order?
Request a Quotation for AK-H08Cr2A1Mo
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.