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. Follow the manufacturer's warnings, instructions, and the Material Safety Data Sheet (MSDS) for its use.
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. Follow the manufacturer's warnings, instructions, and the Material Safety Data Sheet (MSDS) for its use.
in 5 offers
Unimig TIG Tungsten Electrodes, WT20 2% Thoriated / 1.0mm
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. Follow the manufacturer's warnings, instructions, and the Material Safety Data Sheet (MSDS) for its use.
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. Follow the manufacturer's warnings, instructions, and the Material Safety Data Sheet (MSDS) for its use.
The lowest price for Unimig TIG Tungsten Electrodes, WT20 2% Thoriated / 1.0mm right now is $26.95 at Total Tools, compared across 5 retailers.
The all-time low was $8.36 on 20 May 2025 — today's price is 222% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 24 Sept 2026.
Last updated at 24/09/2026 07:10:07
UNIMIG 1.0mm WT20 2 Percent Thoriated Tungsten Electrodes - 10 Pack PTR0004-10
Delivery between 1–7 Oct $13.25
Unimig Thoriated Tungsten Red 1.0Mm Qty 10 Ptr0004-10
Free delivery
1.0mm Thoriated Tungsten Electrodes Unimig PTR0004-10
Delivery between Fri – Mon $9.70
UNIMIG TIG Tungsten Electrodes, WT20 2% Thoriated / 1.0mm
Delivery between 29 Sept – 2 Oct $7.28
UNIMIG PTR0004-10 10-Pack 1.0mm x 175mm Thoriated TIG Tungsten Electrodes
Delivery $13.25
UNIMIG 1.0mm WT20 2 Percent Thoriated Tungsten Electrodes - 10 Pack PTR0004-10
Delivery between 1–7 Oct $13.25
Unimig Thoriated Tungsten Red 1.0Mm Qty 10 Ptr0004-10
Free delivery
1.0mm Thoriated Tungsten Electrodes Unimig PTR0004-10
Delivery between Fri – Mon $9.70
UNIMIG TIG Tungsten Electrodes, WT20 2% Thoriated / 1.0mm
Delivery between 29 Sept – 2 Oct $7.28
UNIMIG PTR0004-10 10-Pack 1.0mm x 175mm Thoriated TIG Tungsten Electrodes
Delivery $13.25
