Duroxite® AP Electrode

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General Product Description

Duroxite® AP Electrode is a solid cored electrode designed for components experiencing metal-to-metal wear, metal-to-earth wear, impact and high abrasion applications. It has an extruded coating containing the alloy elements. The deposit offers a good balance of impact and abrasion resistance. Deposits are forgable, but can only be machined with special tools. Duroxite® AP Electrode has a good weldability and can be applied in all positions.

Duroxite® AP Electrode can be applied to carbon, low alloy, manganese steels and other steel substrates. Duroxite® AP Electrode 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 feed speed and current are preferred to apply.

Key Benefits

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

Typical Applications

Duroxite® AP Electrode 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
4.0 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 - 60 HRC
Typical all-weld metal surface Hardness 1)
Hardness: 3-layer deposit on mild steel
55 - 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, surface hardness, and ASTM G65-A weight loss 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
(%)
0.5
Typical all-weld metal analysis (Weight %)
Mn
(%)
0.6
Typical all-weld metal analysis (Weight %)
Si
(%)
0.6
Typical all-weld metal analysis (Weight %)
Cr
(%)
5.2
Typical all-weld metal analysis (Weight %)
Mo
(%)
1.3
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
Welding positions
All Positions including flat, horizontal, vertical, overhead

Welding parameters recommendations

Diameter
Metric
Diameter
Metric
4.0 mm0.1562 mm
Amperage (A)
Range
140 - 220
Amperage (A)
Optimum
170

Recovery: 90%

Delivery Conditions

Standard package
Type
Standard package
Type
Box
Diameter
Metric
4.0 mm0.1562 mm
Weight
Metric
20 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.