In resistance welding, tungsten and molybdenum based welding electrodes win you over with their longevity.

PLANSEE welding electrode made of tungsten and molybdenum are electrodes are especially suitable for the welding of metals with high electrical conductivity such as copper and silver. They are used in the following welding processes:

• Spot-welding

• Roller-welding

• Projection-welding

• Upset butt welding

Our materials for resistance welding
	Composition	Density g / cm3	Hardness HV 10	Electrical Conductivity m/Omm2	Thermal conductivity W/m°C	Recrystallization temperature °C
Molybdenum	Mo min. 99.97 %	10.2	220-300	19	140	900-1100
TZM	Mo = 99.3 % (min.) Ti = 0.5 % Zr = 0.08 % C = 0.01-0.04 %	10.2	240-320	15	126	1300-1400
MHC	Mo = 98.7 % Hf = 1.2 % C = 0.1 %	10.2	270-320	14	110	1300-1450
Tungsten	W min 99.97 %	19.3	420-500	18	164	1200-1350
Thoriated tungsten	W = 98 % ThO2 = 2 %	19.3	450-500	approx. 17	approx. 150	> 1500
ELMET K 20N	W = 80 % Cu = 20 %	15.6	200-240	approx. 16	126	> 1000
DENSIMET D18	W = 95 % Fe = 1.6 % Ni = 3.4 %	18.0	300-340	approx. 8	ca. 70	> 1000
ELMET E	Cu = 99.5 % Cr = 0.4 % Zr = 0.1 %	8-9	155-175	46-48	ca. 320	ca. 500
SPARKAL® X	W = 75 % Cu = 25 %	14.8	240	40	215

Questions about materials and design? You are in the right place.

We are happy to advise you personally on which material is suitable for your particular application area. With our experience in the processing of refractory materials, we also adapt the design of our welding electrodes to fit your specific application. In addition to finished/manufactured electrodes, PLANSEE also provides blanks for further processing.