Kobelco - Flux Cored Wire - E81TB2C x 1.2

Kobelco FAMILIARC DW-81B2 is the premier, rutile-type low-alloy flux-cored welding wire (FCAW) manufactured by Kobe Steel that carries the official industry classification AWS A5.29 E81T1-B2C. It is specifically engineered for high-temperature, high-pressure industrial environments, such as power generation facilities, chemical plants, and refineries.

Technical Classifications & Meanings
AWS Classification: E81T1-B2C (or E81T1-B2M depending on gas blend).
E: Electrode.
8: Minimum tensile strength of 80,000 psi (approx. 550 MPa) after Post-Weld Heat Treatment (PWHT).
1: All-position welding capability (flat, horizontal, vertical-up, overhead).
B2: Indicates a chemical composition containing 1.25% Chromium (Cr) and 0.5% Molybdenum (Mo).
C: Requires 100% CO? shielding gas (Note: If designated as B2M, it runs on an Argon/CO? blend).

Target Materials
This wire is explicitly formulated for joining heat-resistant, low-alloy Cr-Mo steels, such as:
ASTM A387 Grade 11 & Grade 12 plates.
ASTM A335 Grade P11 & P12 pipes.
Main steam lines, boiler tubes, and pressure vessels subjected to elevated working temperatures.

Key Performance Benefits
Stress-Relief (SR) Crack Resistance: Kobelco applies strict impurity control to the core flux chemistry of DW-81B2. This grants it exceptional resistance to cracking during required post-weld heat treatment cycles.
Excellent Slag Detachability: Utilizes a fast-freezing rutile slag system that completely covers the bead and displays self-peeling detachability as the metal cools, drastically cutting cleanup times.
Stable Arc & High Quality: Delivers a highly stable, smooth arc with low spatter generation, leading to flat to slightly convex bead profiles that easily pass strict radiographic inspection.

Grade: E81TB2C
Spec: AWS A5.29 E81T1 B2C
Size: 1.2
Spool Wt: 12.5Kg