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ELBRODUR®:
Physical and mechanical properties
KME has been in the manufacture of materials for resistance welding electrodes for several decades now;
it moreover supplies the input material for the highly stressed parts in blowpipes for fusion welding. The performance requirements to be met by resistance welding electrode materials can be briefly described as follows:

  • High electrical and thermal conductivity
  • High strength
  • High resistance to softening (high softening temperature)
  • Retention of high hardness at elevated temperatures (high elevated temperature strength)

Physical and Mechanical Properties (Nominal Values)
KME Alloy   ELBRODUR®
HF (CH25)		 ELBRODUR®
N (CH23)
Density at 20°C   g/cm3   8.9   8.9
  Melting temp. (liquidus)   °C   1075   1075  
Mean coefficient of linear thermal expansion
(20°C - 300°C)		 10-6/K 18.0 18.0
  Modulus of elasticity   kN/mm2   120   120  
Thermal cond. at 20°C W/(m.K) 330 350
  Softening temperature   °C   475   475  
Composition wt-% Cr 0.65;
Zr 0.08;
Cu rem.
perm. other elements:
max. 0.2		 Cr 0.65;
Zr 0.05;
Cu rem.
perm. other elements:
max. 0.2

KME Alloy   ELBRODUR®
G (CH27)		 ELBRODUR®
B (CH40)		 ELBRODUR®
D (CH75)
Density at 20°C g/cm3 8.9 8.8 8.9
  Melting temp. (liquidus)   °C   1075   1056   1060  
Mean coefficient of linear thermal expansion
(20°C - 300°C)		 10-6/K 18.0 17.8 18.0
  Modulus of elasticity   kN/mm2   120   120   140  
Thermal cond. at 20°C W/(m.K) 330 230 220
  Softening temperature   °C   475   500   475  
Composition wt.-% Cr 0.65;
Zr 0.1;
Cu rem.
perm. other elements:
max. 0.2		 Co 2.2;
Be 0.55;
Cu rem.
perm. other elements:
Ni + Fe
max 0.5;
others max. 0.5		 Ni 2.5;
Si 0.65;
Cr 0.3;
Cu rem.
perm. other elements:
max. 0.3





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