Tweco ProPlus Digital Auto-Darkening Welding Helmet - Manual (Page 13)

ProPlus Auto-Darkening Welding Helmets
Manual 0-5276 13
Recommended Protective Filters for Electric Welding
Description of Process
Approximate Range of
Welding Current in Amps
Minimum Shade Number of
Filter(s)
Air - Arc Gouging Less than or equal to 400 12
Flux-cored Arc Welding (FCAW)
-with or without shielding gas
Less than or equal to 300 11
300 to 400 12
400 to 500 13
Greater than 500 14
Gas Metal Arc Welding (GMAW)
(MIG)
-Aluminium and Stainless Steel
- other than Aluminium and Stainless
Steel
Less than or equal to 250 12
250 to 350 13
Less than or equal to 150 10
150 to 250 11
250 to 300 12
300 to 400 13
400 14
Gas Tungsten Arc Welding (GTAW)
(TIG)
Less than or equal to 100 10
100 to 200 11
200 to 250 12
250 to 350 13
Greater than 350 14
Manual Metal Arc Welding
- covered electrodes (MMAW)
Less than or equal to 100 8
100 to 200 10
200 to 300 11
300 to 400 12
Greater than 400 13
Plasma - Arc Cutting
50 to 100 10
100 to 400 12
400 to 800 14
Plasma - Arc Spraying — 15
Plasma - Arc Welding
Less than or equal to 20 8
20 to 100 10
100 to 400 12
400 to 800 14
Resistance Welding
— Safety Spectacles or eye
shield
Submerged - Arc Welding — 2(5) *
* A shade 5 filter is recommended for watching molten pool in electroslag welding.
Table 4-1 Recommended Protective Filters for Electric Welding
Refer to standard AS/NZS 1338.1:2012 for comprehensive information regarding Table 4-1.