AK-ER80S-Ni2 MIG Wire for 2.5% Nickel Steel Welding.
A solid MIG welding wire designed for joining 2.5% nickel steels and similar materials requiring high tensile strength and toughness down to -62 °C.
Product Overview
AK-ER80S-Ni2 is a solid MIG welding wire formulated for welding 2.5% nickel steels and other materials requiring a minimum tensile strength of 590 MPa and good impact toughness at temperatures as low as -62 °C.
The wire meets the EN ISO 636-A W 2Ni2 and AWS A5.28 ER80S-Ni2 classifications, with deposited metal properties comparable to E8018-C1 electrodes.
It is intended for use in automated and semi-automated MIG welding processes where consistent mechanical performance and low-temperature toughness are required.
Key Benefits
High Tensile Strength and Toughness.
The deposited metal achieves a tensile strength of at least 610 MPa and yield stress of at least 540 MPa, with elongation of 29 percent and impact values of 82 J, 90 J, and 86 J at -30 °C.
Suitable for Low-Temperature Service.
Impact values at -30 °C exceed 80 J, making the weld metal appropriate for service conditions down to -62 °C, as required for cryogenic applications.
Chemical Composition Matches 2.5% Nickel Steels.
The wire contains 2.0-2.75% nickel, with controlled carbon (0.12%), silicon (0.40-0.80%), and manganese (1.25%), ensuring compatibility with base metals requiring similar alloy content.
Low Sulfur and Phosphorus for Clean Welds.
Sulfur and phosphorus are limited to 0.025% each, reducing the risk of hot cracking and improving weld metal cleanliness.
Where It Is Used
- Welding of 2.5% nickel steels in cryogenic and low-temperature service.
- Fabrication of pressure vessels and piping systems exposed to cold environments.
- Repair and maintenance of offshore and onshore oil and gas equipment.
- Structural components in cold climate regions requiring high toughness.
Who It Is For
- Welding consumable distributors supplying MIG wires for low-temperature applications.
- Fabricators working with 2.5% nickel steels in cryogenic or Arctic conditions.
- Oil and gas contractors requiring certified filler metals for low-temperature piping and vessels.
Problems It Solves
- Matching filler metal chemistry to 2.5% nickel steels to ensure weld metal properties meet code requirements at low temperatures.
- Obtaining a single, certified MIG wire that delivers consistent tensile strength and impact toughness without requiring multiple grades.
- Avoiding weld failures due to insufficient toughness in low-temperature service by using a wire with proven impact values at -30 °C.
Specifications
Published by the factory for AK-ER80S-Ni2. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 636-A W 2Ni2 |
| Classification 2 | AWS A5.28 ER80S-Ni2 |
| Element | Content |
|---|---|
| C | 0.12 |
| SI | 0.40-0.80 |
| Mn | 1.25 |
| S | 0.025 |
| P | 0.025 |
| Ni | 2.0-2.75 |
| Cu | 0.35 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 610 |
| Yield Stress (MPa) | 540 |
| Elongation (%) | 29 |
| Impact values (J) | 82 90 86J/-30℃ |
Technical Features
- Solid MIG wire supplied to EN ISO 636-A W 2Ni2 and AWS A5.28 ER80S-Ni2 classifications.
- Deposited metal tensile strength of at least 610 MPa and yield stress of at least 540 MPa.
- Elongation of at least 29 percent and impact values of 82 J, 90 J, and 86 J at -30 °C.
- Chemical composition: C 0.12%, Si 0.40-0.80%, Mn 1.25%, S 0.025%, P 0.025%, Ni 2.0-2.75%, Cu 0.35%
Use Guide
- Select wire diameter based on joint thickness and welding position; recommended for use in flat and horizontal positions.
- Ensure base metal surfaces are clean and free of oil, rust, moisture, and paint before welding.
- Use shielding gas as specified in the welding procedure specification; typically a mixture of CO2 and argon is used.
- Maintain consistent wire feed speed and arc length to avoid spatter and ensure proper fusion and bead profile.
How It Compares
AK-ER80S-Ni2 is a solid MIG wire designed for 2.5% nickel steels and similar low-temperature materials. It is not intended for use on carbon steel without nickel content. Compared to E8018-C1 electrodes, it offers similar mechanical properties but is used in automated MIG processes rather than manual stick welding.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-ER80S-Ni2 Questions
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