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1-4. Lens Shade Selection Table
Process
Shielded Metal Arc
Welding (SMAW)
Gas Metal
Arc Welding
(GMAW)
Flux Cored
Arc Welding
(FCAW)
Gas Tungsten Arc
Welding (TIG)
Air Carbon
Arc Cutting (CAC-A)
Plasma Arc
Cutting (PAC)
Plasma Arc Welding
(PAW)
Reference: ANSI Z49.1:2005
* Start with a shade that is too dark to see the weld zone. Then, go to a lighter shade which gives a
sufficient view of the weld zone without going below the minimum.
1-5. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, is available as a free down-
load from the American Welding Society at http://www.aws.org or purchased from Global Engineering
Documents (phone: 1-877-413-5184, website: www.global.ihs.com).
Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1,
from American National Standards Institute, 25 West 43rd Street, New York, NY 10036 (phone:
212-642-4900, website: www.ansi.org).
Electrode Size
in. (mm)
Less than 3/32 (2.4)
3/32−5/32 (2.4−4.0)
5/32−1/4 (4.0−6.4)
More than 1/4 (6.4)
Light
Heavy
Arc Current
Minimum
in
Protective
Amperes
Shade No.
Less than 60
60−160
160−250
250−550
Less than 60
60−160
160−250
250−500
Less than 50
50−150
150−500
Less than 500
500−1000
Less than 20
20−40
40−60
60−80
80−300
300−400
400−800
Less than 20
20−100
100−400
400−800
Suggested
Shade No.
(Comfort)*
7
−−
8
10
10
12
11
14
7
−−
10
11
10
12
10
14
8
10
8
12
10
14
10
12
11
14
4
4
5
5
6
6
8
8
8
9
9
12
10
14
6
6−8
8
10
10
12
11
14
OM-256 016 Page 3