bercoweld K8 (CuAg/G)

Range of application

Copper wire (rod), silver- alloyed, with a slightly higher percentage of phosphorus, suitable for TIG- and gas welding. Good flowing properties of the welding material. High electric conductivity, viscous weld pool. Preheating for wall thicknesses of more than 3 mm (approx. 100°C for every mm of sheet thickness, not more than 600°C

Standard designation

ISO 24373	CuAg1 Cu1897
DIN 1733 Mat. no. 2.1211	C CuAg
BS 1453	C1

Composition (weight %)

Cu	balance
Ag	0,80-1,00
P	0,025-0,050
Mn	0,05-0,12
Others	max. 0,5

Physical standard data

Density	kg/dm3	8,9
Melting range	°C	1070-1080
Thermal conductivity	W / m x K	220-315
Coefficient of linear mean expansion	1/K	17,7 x 106
Electric conductivity	m / Ω x mm2	38-40
Resistivity	Ω x mm2 /m	0,025-0,0263

Mechanical properties of the weld joint, standard data

Heat treatment		non treated
Tensile strength	N/mm2	200
Elongation	%	30
Brinell hardness	HB 2,5/62,5	60
Notched bar impact test	Av (J)	75

Delivery programme

Make-up	Weight/Length	Dimension
Drum / bedrabox	175 - 200 kg	0,80 - 1,60 mm
SD300 / BS300 / K300	12 - 15 kg	0,80 - 2,40 mm
H500 / H560 / H760	150 - 250 kg	0,80 - 2,40 mm
Coils	25 - 100 kg	1,60 - 6,00 mm
Rods	250 - 3000 mm	1,60 - 6,00 mm

Further make ups on request.

Recommended inert gas

Argon	4.8/ 5.0/ 5.3/ 5.6/ 6.0