Copper-Coated Solid Wire
(2.25Cr-1Mo heat-resistant steel)
GJ-EB3R is a 2.25% chromium - 1% molybdenum alloyed solid wire strictly complying with AWS A5.23 EB3R. Designed for elevated temperature service up to 600C, it provides excellent creep resistance and is ideal for welding boiler tubes, pressure vessels, and piping in power generation and petrochemical industries.
High-Temperature Creep Resistance: 2.25Cr-1Mo composition delivers excellent long-term creep strength at elevated temperatures.
Ultra-Low Impurities: Controlled P and S levels (<=0.010%) ensure superior toughness and resistance to reheat cracking.
PWHT Stable: Maintains consistent mechanical properties after standard post-weld heat treatment at 690C.
With GJ-101G (Basic Flux): For welding 2.25Cr-1Mo steel boiler tubes, headers, and pressure vessels in power plants.
With GJ-301 (Neutral Flux): For fabrication of heat exchangers, reactors, and piping in refinery and petrochemical service.
For elevated temperature service: Suitable for components operating continuously up to 600C in fossil fuel and nuclear applications.
|
Elements |
C (Carbon) |
Mn (Manganese) |
Si |
Cr (Chromium) |
Mo (Molybdenum) |
S (Sulfur) |
P (Phosphorus) |
Cu (Copper) |
|
AWS Requirement |
0.05 - 0.15 |
0.40 - 0.80 |
0.05 - 0.30 |
2.25 - 3.00 |
0.90 - 1.10 |
<=0.010 |
<=0.010 |
<=0.15 |
|
Typical Actual Value |
0.10 |
0.60 |
0.20 |
2.50 |
1.00 |
0.006 |
0.008 |
0.08 |
The mechanical properties of EB3R must be evaluated in combination with a specific flux after PWHT (690C x 1h). The following data is based on testing combined with a basic agglomerated flux (e.g., SJ101).
|
Test Item |
Yield Strength |
Tensile Strength |
Elongation |
Impact Value@Room Temp |
|
AWS F8P4 Requirement |
>=400 MPa |
550 - 700 MPa |
>=20% |
>=27 J |
|
Typical Actual Result |
500 MPa |
620 MPa |
24% |
80 J |
|
Wire Diameter |
1.6 mm (1/16") |
2.5 mm (3/32") |
3.2 mm (1/8") |
4.0 mm (5/32") |
5.0 mm (3/16") |
|
Amperage |
250 - 420 |
350 - 500 |
400 - 550 |
470 - 600 |
550 - 650 |
|
Voltage |
26 - 30 |
27 - 30 |
28 - 31 |
28 - 32 |
30 - 34 |
Consistent Quality, Direct Factory Pricing.
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Moisture control is critical for submerged‑arc welding fluxes. Our standard packaging is 25‑kilogram multi‑layer kraft paper bags lined with heavy‑duty moisture‑proof plastic bags. For extreme environments or ultra‑low hydrogen requirements (such as H5 grade), we can also provide custom heavy‑duty aluminium foil vacuum packaging. All goods are stacked on wooden pallets and tightly wrapped with multiple layers of industrial shrink film to ensure 100% dryness upon arrival at the port.
No. For High-Grade Oil & Gas pipeline fabrication (such as API X60 to X70), standard neutral fluxes like 301 or active fluxes like 501 are not suitable, as they cannot guarantee the required extreme low-temperature impact toughness. You must use our dedicated pipeline-grade Fluoride-Basic agglomerated flux, GJ-101Q (or GJ-101G), combined with Mo/Ni-alloyed wires (e.g., EA2 or S3Ni1Mo).This combination ensures zero loss of alloying elements and guarantees impact values of ≥27J(or much higher) at -40°C to -50°C.
Our standard MOQ for international orders is normally 5 tons per item. For a full 20‑foot FCL container, the loading capacity is usually 24 tons subject to container space constraints, and it can reach 27 tons without pallets. A 40HQ high‑cube container can hold a maximum of 28 tons. Backed by our robust production capacity, we can finish production, quality inspection and packaging within 7‑10 days upon receiving the deposit, and deliver the goods to major Chinese ports such as Qingdao Port or Tianjin Port.
Yes! We fully understand that re-baking costs time and electricity. For customers who want to skip this step, we highly recommend selecting our Heavy-Duty Aluminum Foil Vacuum Packaging. The flux is vacuum-sealed immediately after high-temperature manufacturing. When you open the bag in your workshop, the flux is in a 100% factory-dry state and can be poured directly into the welding hopper for immediate use.
For structural steel with surface impurities like rust, oil, or mill scale, standard neutral or high-basic fluxes will likely cause porosity. You need our GJ-501A (Aluminate-Rutile Active Flux). It features a highly active deoxidizing slag system that offers exceptional tolerance to surface contaminants. This allows you to achieve flawless, X-ray quality welds at high speeds without rigorous pre-weld grinding, significantly boosting your shop floor efficiency.
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