bercoweld A822 (AlBz8MnF)

Range of application

The multi alloy copper- aluminum based welding filler metal is particularly suitable for CuAlNi alloyed metals. Joining of steel and CuAl- alloys. High resistance to wear and abraison. Very good corrosion resistance to seawater. Preheating is recommended for large work pieces. As first layer for surface welding on ferrous products, impulsed arc welding is recommended.

Standard designation

ISO 24373	CuAl8Ni2 Cu6327
DIN 1733 Mat. no. 2.0922	SG-CuAl8Ni2
BS 2901P.3	C29

Composition (weight %)

Cu	balance
AL	7,70-8,40
Ni	1,90-2,30
Mn	1,90-2,30
Fe	1,90-2,30
Others	max. 0,5

Physical standard data

Density	kg/dm3	7,5
Melting range	°C	1030-1050
Thermal conductivity	W / m x K	50
Coefficient of linear mean expansion	1/K	17 x 10-6
Electrical conductivity	m / Ω x mm2	5
Resistivity	Ω x mm2 /m	0,20

Mechanical properties of the weld joint, standard data

Heat treatment		non treated
Tensile strength	N/mm2	530
Elongation	%	30
Brinell hardness	HB 2,5/62,5	140
Notched bar impact test	Av (J)	70

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