Hajji Welding Supplies, based in Tunis, Tunisia, is a trusted name in manufacturing and supplying specialized welding consumables tailored for pressure and high-temperature alloy steel applications. They provide the AWS Class E91T1-B3 flux-cored welding wire, which is designed to ensure consistent weld quality, low hydrogen levels, and reliable mechanical performance. Produced under rigorous quality control and in line with international standards, this consumable is perfect for demanding fabrication and maintenance tasks. Hajji Welding Supplies caters to industries like power generation, petrochemicals, refineries, and heavy engineering, offering proven welding solutions along with robust technical support.
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AWS Class E91T1-B3 Flux Core Specification
| Classification | AWS A5.29, E81T1-B2 |
| Form | Welding Flux Core Wire |
| Type Of Welding | Gas Shielded |
| Diameters | .045”, 1/16” |
| Shielding Gas | 100% CO2, 75-80% Ar/ balance CO2, 35-50 cfh |
| Welding Positions | All positions |
| AWS E81T1-B2 Flux Core Wire Application & uses |
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What is AWS Class E91T1-B3 Flux Core?
AWS Class E91T1-B3 is a low-alloy chromium-molybdenum steel flux-cored wire, typically containing about 2.25% chromium and 1% molybdenum. This blend enhances strength, creep resistance, and toughness at high temperatures. The weld metal produced boasts a minimum tensile strength of around 620 MPa, stable impact properties, and excellent resistance to hydrogen-induced cracking. It ensures smooth arc performance, effective slag control, and dependable mechanical properties after the right post-weld heat treatment.
AWS Class E91T1-B3 Flux Core Chemical Composition
C | Mn | Si | P | S | Cr | Mo |
0.05- | 1.25 | 0.80 | 0.03 | 0.03 | 1.00- | 0.40- |
0.12 | max | max | max | max | 1.50 | 0.65 |
AWS Class E91T1-B3 Flux Core Mechanical Properties
As required by AWS 5.29 | Tensile Strength MPa (ksi) | Yield Strength MPa (ksi) | Elongation | PWHT |
AWS | 550 – 690 | 470 (68) | 19 min | 1 Hr @ |
Typical Results – As welded | 600 (87) | 530 (77) | 25 |
Equivalent AWS Class E91T1-B3 Flux Core
Diameter | Process | Flat | Vertical-Up | Overhead | ||||
in | (mm) | Volt | Amps | Volt | Amps | Volt | Amps | |
.035 | (1.9) | FCAW | 20-30 | 130-250 | 16-23 | 90-180 | 20-28 | 130-240 |
.045 | (1.14) | FCAW | 23-30 | 150-280 | 22-26 | 150-250 | 24-29 | 150-250 |
1/16 | (1.6) | FCAW | 25-34 | 180-400 | 21-27 | 180-300 | 24-30 | 180-310 |
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Leading Industrial Supplier of AWS Class E91T1-B3 Flux Core For Welding Solutions in Tunis
At Hajji Welding Supplies, we take pride in being one of Tunis’s trusted suppliers of high-quality welding consumables. Our expertise lies in AWS Class E91T1-B3 Flux Core, engineered for precision, durability, and resistance to corrosion. With a strong commitment to quality and customer satisfaction, we provide welding solutions that support industries across construction, energy, shipbuilding, and manufacturing.
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Types of AWS Class E91T1-B3 Flux Core
AWS Class E91T1-B3 Flux Core Uses
AWS Class E91T1-B3 flux-cored wire is ideal for welding Cr-Mo alloy steels like ASTM P22 and similar materials. Common applications include boilers, pressure vessels, steam piping, heat exchangers, reactors, and refinery equipment that operate under high temperature and pressure. It’s widely used in power plants, petrochemical facilities, refineries, and the fertilizer industry. This flux-cored wire is suitable for both shop fabrication and on-site welding, providing good productivity, low hydrogen weld metal, and long-lasting reliability in critical high-stress environments.
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The Hajji Industries Server is built to deliver reliability, speed, and scalability for mission-critical operations. Designed for modern industrial environments, it ensures seamless performance in manufacturing, engineering, energy, and automation sectors.
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