AWS: 5.36 E71T1-M21A2-CS1
EN ISO : 17632-A: T42 2 ZMn P M21 1 H5
Nippon SF-1A is an all-positional, seamless, copper-coated flux cored welding wire manufactured in Japan by Nippon Steel Welding & Engineering Co. Ltd to exacting high standards.
One of the best Seismic Grade 3 wires for structural fabrication, ship building, bridges, etc. For use with Mixed gases.
Distributed in Australia and New Zealand by Welding Engineers NZ Ltd.
Superb wire to run, described as smooth and buttery, with a high deposition rate.
Although classed as H5, the seamless design of this wire ensures an extremely low diffusible hydrogen content, typically 2.8ml/100g of weld metal.
The low level of hydrogen significantly reduces the occurrence of cold cracking, (this is has become increasingly important in NZ with the variability in the quality of imported steel).
The copper coating ensures SF-1A is virtually impervious to moisture and also gives superb tip conductivity and feedability.
Nippon SF-1A would be our top recommendation in many cases where superior integral strength and reliability are required.