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RECOMMENDED SHADE LEVELS FOR VARIOUS WELDING APPLICA-
TIONS / EN 379 /
WELDING
PROCESS
6
MMA
MAG
TIG
MIG heavy metals
MIG light metals
Stainless, AI
Plasma cutting
4
Micro plasma welding
LIGHT TRANSMISSION CURVE
Transmission
100
T[%]
10
1
0,1
0,01
0,001
0,0001
300
CURRENT IN AMPERES
10
15
30
40
60
8
8
8
9
9
10
9
5
6
7
400
500
600
700
70
100
125
150
175
9
10
11
SQ913
9
10
11
10
11
SQ913
10
SQ913
SQ913
10
11
SQ913
8
9
10
Shade 4
Shade 9
Shade 10
Shade 11
Shade 12
Shade 13
800
900
1000
200
225
250
300
350
12
13
12
SQ913
12
13
14
11
12
13
11
12
13
12
13
11
12
13
SQ913
LIGHT STATE
DARK STATE
1100
1200
1300
λ[nm]
Wavelength
400
1400
11
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