For 50 150 a an average shade strength of 10 is common while 150 500 a is best welded with 12 or higher.
Best fixed shade welding lenses.
Both ansi and aws are more cautious recommending a shade number 11 for welding at 60 160 amps a number 12 for 160 250 amps and a number 14 for 250 500 amps.
Choosing the right lens shade depends mainly on the amperage that you are welding with and the brightness perceived by your eyes.
Variable shade lenses the first decision you ll have to take is deciding between a fixed and variable shade lens.
2 8 which are the best auto darkening 2 4 welding lenses.
Safety glasses equipped with 1 7 to 3 0 lenses also can be useful in situations in which sparks and spatter are not a concern.
2 7 which are the best welding lenses for pipeliner hoods.
2 9 which welding lens is darkest.
To be confident with your choice i compiled a some useful information on the topic to make the selection easier for you.
Fixed shade helmets can only darken to a single pre defined shade usually a 10 shade while variable shade helmets can darken to a number of shades depending on the welding process being used and materials being welded.
What shade lens for mig welding.
Many welders choose there lens shade based on a couple of different criteria.
2 6 how do you choose a welding lens.
Optrel 5000 011 inside cover plate blue 1 0 for expert series 5 pack.
According to osha s fact sheet mig welding gmaw or flux cored welding fcaw using currents of 60 to 500 amps requires a minimum lens shade level of a din number 10.
2 10 what shade of welding lens do you need to look at the sun.