ELBRODUR® D (CuNi2.5SiCr) is a beryllium-free, high-strength, age hardened electrode material having a high softening temperature and high electrical conductivity – partly serving as an alternative to ELBRODUR® B. Suitable for the resistance welding of bus conductors, for projection welding and for consumable and butt welding electrodes. Also suitable for welding high-strength sections (shapes) and die casting plungers.
Nominal Composition
Percentages are by weight:
Ni 2.5 %
Si 0.65 %
Cr 0.3 %
Cu rem.
perm. other elements max. 0.3 %
Mechanical and Physical properties
A
B
Tensile strength Rm
MPa
≥ 660
≥ 570
Yield strength Rp0.2
MPa
≥ 570
≥ 460
Elongation A5
%
≥ 10
≥ 10
Reduction of Area Z
%
≥ 25
≥ 25
Hardness HBW 2.5/187.5
180 - 230
180 - 220
Hardness HV 30
190 - 245
190 - 230
Hardness HRB
89 -99
89 - 97
El. conductivity
MS/m
25 - 30
25 - 30
El. conductivity
% IACS
43 - 52
43 - 52
Forms, Sizes and Tempers
Bars
Dia. (mm)
A
Thickness = 2 mm - 10 mm
Width = 10 mm - 75 mm
Thickness to width ratio 1 : 20 max.
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