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Cored Wire

Description and Application

AMPCO-CORE® 250 is an aluminum bronze flux core wire for use with the Gas Metal Arc Welding process.

AMPCO-CORE® 250 is primarily an overlay filler metal. The characteristics of this filler metal make the deposit adaptable for use in those extreme bearing applications where very high pressures are encountered operating against hardened steel surfaces.

AMPCO-CORE® 250 often use for overlaying in applications where it unusual wear-resistant qualities increase service life of wearing parts.


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Typical Applications

Friction plates Bearings Sliders
High speed bearings Forming dies

Product availability and packaging

AMPCO-CORE® 250 is available from stock in two diameters: 0.045” (1.2mm) and 0,062” (1.6mm). Both sizes are available in 12″ (300mm) spools weighing 33lb (15 kg) each. Other diameters are available upon request.

Welding position and deposits

The flat welding position is recommended. Backhand (trailing) welding is preferred rather than forehand (pushing) to make either stringer or weaved beads.

Shielding gas

100% Argon

Operating conditions

Current type Gas flow rate Intensity [A] Voltage [V] Stick-out [inch (mm)]
DC+ (DCEP) 25 – 46 cfh (12-22 L/min) 0.045″ (1.2 mm) 200-300
0.062″ (1.6 mm) 360-400
All diameters 28-30 All diameters 5/8-1″ (15-25)


Limiting Chemical Composition
% (filler metal)
Copper* Balance
Aluminum 11.5
Iron 4.0
* including silver
Mechanical Properties
(Nominal all-weld metal values)
Hardness (HBW 10/3000)
Three layer deposit on mild steel

Document Download

AMPCO-CORE® 250 Technical Data Sheet