WT20 2% Thoriated Tungsten Electrodes (AWS classification EWTh-2) contain a minimum of 97.30 per cent tungsten and 1.70 to 2.20 per cent thorium and are called 2 per cent thoriated. They are the most commonly used electrodes today and are preferred for their longevity and ease of use. Thorium, however, is a low-level radioactive hazard and many users have switched to other alternatives. Regarding the radioactivity, thorium is an alpha emitter but when it is enclosed in a tungsten matrix the risks are negligible. Thoriated tungsten should not get in contact with open cuts or wounds. The more significant danger to welders can occur when thorium oxide gets into the lungs. This can happen from the exposure to vapours during welding or from ingestion of material/dust in the grinding of the tungsten.
WT20 2% Thoriated Tungsten Electrodes (AWS classification EWTh-2) contain a minimum of 97.30 per cent tungsten and 1.70 to 2.20 per cent thorium and are called 2 per cent thoriated. They are the most commonly used electrodes today and are preferred for their longevity and ease of use. Thorium, however, is a low-level radioactive hazard and many users have switched to other alternatives. Regarding the radioactivity, thorium is an alpha emitter but when it is enclosed in a tungsten matrix the risks are negligible. Thoriated tungsten should not get in contact with open cuts or wounds. The more significant danger to welders can occur when thorium oxide gets into the lungs. This can happen from the exposure to vapours during welding or from ingestion of material/dust in the grinding of the tungsten.
in 4 offers
The lowest price for Unimig TIG Tungsten Electrodes, WT20 2% Thoriated / 3.2mm right now is , compared across 4 retailers.
Unimig TIG Tungsten Electrodes, WT20 2% Thoriated / 3.2mm
WT20 2% Thoriated Tungsten Electrodes (AWS classification EWTh-2) contain a minimum of 97.30 per cent tungsten and 1.70 to 2.20 per cent thorium and are called 2 per cent thoriated. They are the most commonly used electrodes today and are preferred for their longevity and ease of use. Thorium, however, is a low-level radioactive hazard and many users have switched to other alternatives. Regarding the radioactivity, thorium is an alpha emitter but when it is enclosed in a tungsten matrix the risks are negligible. Thoriated tungsten should not get in contact with open cuts or wounds. The more significant danger to welders can occur when thorium oxide gets into the lungs. This can happen from the exposure to vapours during welding or from ingestion of material/dust in the grinding of the tungsten.
WT20 2% Thoriated Tungsten Electrodes (AWS classification EWTh-2) contain a minimum of 97.30 per cent tungsten and 1.70 to 2.20 per cent thorium and are called 2 per cent thoriated. They are the most commonly used electrodes today and are preferred for their longevity and ease of use. Thorium, however, is a low-level radioactive hazard and many users have switched to other alternatives. Regarding the radioactivity, thorium is an alpha emitter but when it is enclosed in a tungsten matrix the risks are negligible. Thoriated tungsten should not get in contact with open cuts or wounds. The more significant danger to welders can occur when thorium oxide gets into the lungs. This can happen from the exposure to vapours during welding or from ingestion of material/dust in the grinding of the tungsten.
The all-time low was $48.51 on 30 Sept 2024 — today's price is 353% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 18 Sept 2026.
Last updated at 18/09/2026 08:57:40
UNIMIG TIG Tungsten Electrodes, WT20 2% Thoriated / 3.2mm
Delivery between 23–28 Sept $7.28
Thoriated Tungsten Electrodes 3.2mm Unimig PTR0004-32
Delivery between Sat – Tue $13.25
UNIMIG PTR0004-32 10-Pack 3.2mm x 175mm Thoriated TIG Tungsten Electrodes
Free delivery
UNIMIG 3.2mm WT20 2 Percent Thoriated Tungsten Electrodes - 10 Pack PTR0004-32
Free delivery between 25–30 Sept
UNIMIG TIG Tungsten Electrodes, WT20 2% Thoriated / 3.2mm
Delivery between 23–28 Sept $7.28
Thoriated Tungsten Electrodes 3.2mm Unimig PTR0004-32
Delivery between Sat – Tue $13.25
UNIMIG PTR0004-32 10-Pack 3.2mm x 175mm Thoriated TIG Tungsten Electrodes
Free delivery
UNIMIG 3.2mm WT20 2 Percent Thoriated Tungsten Electrodes - 10 Pack PTR0004-32
Free delivery between 25–30 Sept
