bercoweld A300 (Maxal300)

Range of application

High strenght alloy, also safe in regard to sparking. Restistant to sea water, wear and abrasion. Restistant to cavitation and erosion. Build-up and join welding on aluminium bronzes. Specially for ships´propellers, slide rails, raceways, valve control housings.

Standard designation

ISO 24373	CuMn13Al7 Cu6338
DIN 1733 Mat. no. 2.1367	SG-CuMn13Al7
BS 2901P.3	C 22
AWS A5.7-84	ERCuMnNiAl

Composition (weight %)

Cu	balance
Al	7,00-8,50
Ni	1,50-3,00
Fe	2,00-4,00
Mn	11,00-14,00
Others	max. 0,5

Physical standard data

Densitiy	kg/dm3	7,4
Melting range	°C	945-985
Thermal conductivity	W / m x K	30
Coefficient of linear mean expansion	1/K	10-6
Electrical conductivity	m / Ω x mm2	3-5
Resistivity	Ω x mm2 /m	0,20-0,333

Mechanical properties of the weld joint, standard data

Heat treatment		non treated
Tensile strength	N/mm2	900
Elongation	%	10
Brinell hardness	HB 2,5/62,5	320

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