AK-H08Mn2NiMoE Submerged Arc Welding Wire for Low-Temperature Service.
A low alloy steel SAW wire designed for use with fluxes like SJ105 and SJ105Q to produce weld metal with high impact toughness at low temperatures.
Product Overview
AK-H08Mn2NiMoE is a low alloy steel submerged arc welding wire intended for use with matching fluxes such as SJ105 and SJ105Q. The combination delivers deposited metal with excellent low temperature impact toughness.
It is specified for submerged arc welding of liquefied gas LPG transportation storage tanks and E490 steel, where mechanical performance at low temperatures is critical.
Application: Combined with flux (such as SJ105, SJ105Q, etc.) for submerged arc welding of liquefied gas LPG transportation storage tanks, E490 steel, etc.
Key Benefits
High Impact Toughness at Low Temperatures.
The deposited metal achieves a minimum impact value of 50 J at minus 40 degrees C, making it suitable for cryogenic and low-temperature service applications.
Controlled Chemical Composition
The wire contains precise levels of nickel (0.20-0.50%) and molybdenum (0.20-0.50%) to enhance strength and toughness, while low sulfur (≤0.015%) and phosphorus (≤0.020%) limit embrittlement risks.
High Tensile and Yield Strength.
Deposited metal tensile strength ranges from 610 to 770 MPa, with yield stress at least 500 MPa, meeting the requirements for high-strength structural applications.
Good Ductility and Weldability.
The elongation of the deposited metal is at least 18 percent, ensuring good ductility and resistance to cracking during service and fabrication.
Where It Is Used
- Submerged arc welding of liquefied gas LPG transportation storage tanks.
- Welding of E490 steel structures requiring low-temperature toughness.
- Fabrication of pressure vessels and storage tanks operating in cold environments.
Who It Is For
- Welding consumable distributors supplying SAW wire for industrial and cryogenic applications.
- Fabricators of storage tanks and pressure vessels requiring certified low-temperature weld metal.
- EPC contractors working on LPG and petrochemical projects with strict impact toughness requirements.
Problems It Solves
- Achieving required low-temperature impact toughness in weld metal for cryogenic service without compromising strength.
- Matching filler metal chemistry to base metals like E490 and low-alloy steels used in LPG tanks.
- Sourcing a single wire that performs consistently with standard fluxes like SJ105 and SJ105Q.
Specifications
Published by the factory for AK-H08Mn2NiMoE. 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 —— |
| Element | Content |
|---|---|
| C | 0.12 |
| Si | 0.45 |
| Mn | 1.60-2.10 |
| S | ≤0.015 |
| P | ≤0.020 |
| Ni | 0.20-0.50 |
| Mo | 0.20-0.50 |
| Ti | 0.15 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 610-770 |
| Yield Stress (MPa) | ≥500 |
| Elongation (%) | ≥18 |
| Impact values (J) | ≥50J/-40℃ |
Technical Features
- Low alloy steel submerged arc welding wire with chemical composition tailored for toughness and strength.
- Deposited metal tensile strength: 610-770 MPa, yield stress: ≥500 MPa, elongation: ≥18 percent.
- Impact toughness: ≥50 J at minus 40 degrees C.
- Chemical composition: C 0.12%, Si 0.45%, Mn 1.60-2.10%, S ≤0.015%, P ≤0.020%, Ni 0.20-0.50%, Mo 0.20-0.50%, Ti 0.15%
- Compatible with fluxes such as SJ105 and SJ105Q.
Use Guide
- Select flux based on application and joint configuration; SJ105 and SJ105Q are recommended for use with AK-H08Mn2NiMoE.
- Ensure base metal and flux are clean and dry before welding to avoid hydrogen-induced cracking.
- Follow recommended welding parameters for the specific joint design and position.
- Store wire and flux in dry conditions to prevent moisture absorption; re-bake if exposed.
How It Compares
AK-H08Mn2NiMoE is a low alloy SAW wire designed for high toughness at low temperatures. It differs from standard carbon steel wires like H08A in its alloying elements (Ni, Mo) and resulting mechanical properties. Compared to other low-alloy wires, it offers a balanced combination of strength and impact toughness suitable for LPG storage tanks and similar applications. It is not intended for use in high-hydrogen environments without proper flux control.
Related Grades
Other welding wire in the same family.
AK-H08Mn2NiMoE Questions
What fluxes are recommended for use with AK-H08Mn2NiMoE?
What is the impact toughness of the deposited metal?
What are the tensile and yield strength values?
Can I get technical data sheets and chemical analysis reports?
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