ER90S-B3 TIG WIRE
Compatible welding processes: Supports TIG welding (tungsten inert gas welding) and CO₂ gas shielded welding, with excellent all-position welding performance.
Applicable scenarios: Used for welding high-temperature heat-resistant steel components below 600℃, such as boiler heating surfaces, steam pipes, and pressure vessels.
Alternative names: Also commonly known as 62B3 welding wire or 2CM welding wire.
ER90S-B3 TIG WIRE is a premium low-alloy filler metal specifically engineered for welding 2.25% Cr-1% Mo heat-resistant steels. This ER90S-B3 welding wire is designed to provide exceptional creep resistance and mechanical integrity in high-temperature environments, making it the industry standard for critical energy and petrochemical infrastructure. Our 2.25% Cr-1% Mo heat-resistant steel welding wire ensures long-term reliability under extreme thermal stress, with service temperatures reaching up to 600°C.
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Product Attribute |
Specification Details |
|
AWS Classification |
AWS A5.28 ER90S-B3 |
|
Material Type |
Low-Alloy Heat-Resistant Steel |
|
Nominal Composition |
2.25% Chromium, 1% Molybdenum |
|
Welding Process |
TIG (GTAW) / MIG (GMAW) |
|
Service Temperature |
Up to 600°C (1112°F) |
|
Shielding Gas |
100% Argon (TIG); 95% Argon + 5% CO2 (MIG) |
Core Advantages and Technical Features
This ER90S-B3 low-alloy welding wire combines precise chemical composition with excellent metallurgical stability. Its primary advantage lies in its ability to maintain high tensile strength and ductility even after prolonged exposure to elevated temperatures. As a professional ER90S-B3 TIG welding wire, it is manufactured with minimal impurities, ensuring a clean weld pool and superior bead appearance.
"ER90S-B3 is characterized by its excellent resistance to hydrogen attack and sulfur corrosion, particularly in refinery environments where temperatures range between 250°C and 450°C."
Industrial Applications and Compatibility
As a critical boiler pipe welding wire, ER90S-B3 is indispensable in the fabrication of high-pressure steam systems. Its high-temperature creep-resistant welding wire properties make it the preferred choice for components that must withstand constant stress at near-incandescent temperatures.
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Industry Sector |
Typical Components |
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Power Generation |
Boiler superheaters, steam headers, turbine castings |
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Petrochemical |
Pressure vessels, heat exchangers, reactor cladding |
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Oil & Gas |
High-pressure piping, sulfur-bearing crude processing |
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Heavy Engineering |
Valve bodies, forged fittings, coal liquefaction units |
This CrMo heat-resistant steel welding wire is broadly compatible with various ASTM base metal specifications, including A387 Grade 22 plates and A335 P22 pipes. Its versatility allows it to be used in all welding positions, providing flexibility for complex on-site repairs and shop fabrications.
Chemical & Mechanical
To maximize the performance of the ER90S-B3 gas shielded welding wire, strict adherence to chemical composition and Post-Weld Heat Treatment (PWHT) is required. The following tables outline the typical performance metrics of our ER90S-B3 consumables.
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Deposited Metal Chemical Composition (Weight %)
|
Element |
C |
Cr |
Mo |
Mn |
Si |
P |
S |
|
Standard Range |
0.07-0.12 |
2.30-2.70 |
0.90-1.20 |
0.40-0.70 |
0.40-0.70 |
≤0.025 |
≤0.025 |
|
Typical Result |
0.09 |
2.45 |
1.05 |
0.55 |
0.50 |
0.010 |
0.008 |
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Deposited Metal Mechanical Properties (After PWHT 1h @ 690°C)
|
Property |
AWS A5.28 Requirement |
Typical Result |
|
Tensile Strength |
≥ 620 MPa (90 ksi) |
650 MPa |
|
Yield Strength |
≥ 540 MPa (78 ksi) |
570 MPa |
|
Elongation (%) |
≥ 17% |
20% |
|
Impact Value |
Optional |
80J @ +20°C |
Welding Guidelines
When using ER90S-B3 welding wire, preheating and interpass temperature control are critical to prevent cold cracking. We recommend a preheat temperature of 175°C to 230°C depending on the base metal thickness. Post-Weld Heat Treatment (typically at 690°C for at least one hour) is an essential step to temper the martensitic structure and achieve the desired mechanical properties.
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