Duroxite® AP Wire

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General Product Description

Duroxite® AP Wire is a gas shielded flux cored all positions hardfacing wire for components experiencing metal-to-metal wear, metal-to-earth wear, impact, and high abrasion applications. The deposit offers a good balance of impact and abrasion resistance. Deposits are forgeable, but can only be machined with special tools. The wire has been developed to operate in a smooth semi-spray transfer mode whilst welding in all positions. The deposited overlay is magnetic on carbon and low alloy steels but not on manganese steels.

Duroxite® AP Wire can be applied to carbon, low alloy, manganese, and other steel substrates. Duroxite® AP Wire is suitable for single and multiple-layer deposit up to three layers. Preheating, interpass temperature, and post-weld heat treatment are as needed according to base metal recommendations. If welding with downhill or uphill position, reduced wire feed speed and voltage are preferred to apply.

Key Benefits

  • Duroxite® AP Wire is a hardfacing wire for all positions welding.
  • The Duroxite® AP Wire deposited overlay consists of medium alloy martensite for good abrasion and impact resistance.

Typical Applications

Duroxite® AP Wire has many applications where moderate/high impact and high abrasion wear conditions prevail. Examples: Bucket teeth, tillage tools, bucket lips, bucket sides, cutting edges, sand dredge equipment, dragline buckets, conveyor chutes, grizzly bars, screw flights, metal shredders, sliding metal parts, tire shredder knives, extruder screws, tamper feet, churn drills, muller tires. Especially applicable for all-positional welding and re-instating of hardfacing sealing runs on clad wear plate fabrications.


Standard Dimensions

Standard diameter
Metric
Standard diameter
Metric
1.2 mm
Standard diameter
Metric
Standard diameter
Metric
1.6 mm

Mechanical Properties

Typical all-weld metal surface Hardness 1)
Hardness: 2-layer deposit on mild steel
Typical all-weld metal surface Hardness 1)
Hardness: 2-layer deposit on mild steel
55 - 59 HRC
Typical all-weld metal surface Hardness 1)
Hardness: 3-layer deposit on mild steel
56 - 60 HRC
1) Surface hardness is measured on machined flat surface just below overlay surface.

Test results for mechanical properties

Test results for mechanical properties, deposit overlay chemical composition and surface hardness were obtained from a weld produced and tested according to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, substrate chemistry and working temperature, weldment design and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended applications.

Chemical Composition

Typical all-weld metal analysis (Weight %)
C
(%)
Typical all-weld metal analysis (Weight %)
C
(%)
0.4
Typical all-weld metal analysis (Weight %)
Mn
(%)
1.0
Typical all-weld metal analysis (Weight %)
Si
(%)
0.5
Typical all-weld metal analysis (Weight %)
Cr
(%)
5.5
Typical all-weld metal analysis (Weight %)
Mo
(%)
0.5
Typical all-weld metal analysis (Weight %)
Fe
Balance
Typical all-weld metal analysis (Weight %)
C
(%)
Typical all-weld metal analysis (Weight %)
C
(%)
0.5
Typical all-weld metal analysis (Weight %)
Mn
(%)
1.3
Typical all-weld metal analysis (Weight %)
Si
(%)
0.6
Typical all-weld metal analysis (Weight %)
Cr
(%)
7.0
Typical all-weld metal analysis (Weight %)
Mo
(%)
0.6
Typical all-weld metal analysis (Weight %)
Fe
Balance

Welding recommendations

Welding conditions
Current type
Welding conditions
Current type
DCEP (Direct current electrode positive)
Welding conditions
Shielding gas
75% Ar + 25% CO2 gas mixtures
Welding conditions
Welding positions
All Positions including flat, horizontal, vertical, overhead

Welding parameters recommendations

Diameter
Metric
Diameter
Metric
1.2 mm0.04688 mm 0.045"
Amperage (A)
Range
160 - 220
Amperage (A)
Optimum
180
Voltage (V)
Range
24 - 30
Voltage (V)
Optimum
25
Stick-out
Range
12 mm - 30 mm
Stick-out
Optimum
20 mm
Diameter
Metric
Diameter
Metric
1.6 mm0.06250 mm
Amperage (A)
Range
170 - 275
Amperage (A)
Optimum
220
Voltage (V)
Range
24 - 30
Voltage (V)
Optimum
28
Stick-out
Range
12 mm - 30 mm
Stick-out
Optimum
20 mm

Recovery: 90%

Delivery Conditions

Standard package
Type
Standard package
Type
Spool
Diameter
Metric
1.2 mm0.04688 mm 0.045"
Weight
Metric
15 kg
Standard package
Type
Standard package
Type
Spool
Diameter
Metric
1.6 mm0.06250 mm
Weight
Metric
15 kg

Fabrication and Other Recommendations

The welded overlay components can be processed by welding, cutting, forming and machining. Specific recommendations can be found in the Duroxite® Product brochure or by consulting your local technical support representative.

Safety precautions

When welding or cutting Duroxite® products, gases and harmful fumes are produced that are chemically complex and difficult to classify. The major toxic component in the fumes is hexavalent chromium. The proper exhaust ventilation equipment and fume-extraction torches are recommended, as well as suitable protective clothing and respiratory protection for operators.