Duroxite® 200 Wire

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General Product Description

Duroxite® 200 Wire is a flux-cored welding wire for hardfacing components subject to severe abrasive wear and moderate impact applications using an open-arc welding process. The deposit contains hard complex carbides in a tough matrix and performs exceptionally well for both fine and coarse abrasion applications. It naturally reveals stress-relief cracks after welding.

Duroxite® 200 Wire is suitable for single or double-layer deposits. 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

  • Same wear resistance guaranteed from surface through 75% depth of overlay in multi-layer deposit.
  • Optimal alloy formulation that forms a primary chromium-rich carbide with co-existing refined multi-alloys carbides which provide a good combination of wear and impact resistance.

Typical Applications

Duroxite® 200 Wire is mainly designed to use for hardfacing components undergoing heavy wear by earth, sand or abrasives up to 600 ºC (1100ºF).

Typical examples include: Sand and earthmoving equipment, ground engaged teeth, slurry pipe, railway ballast tampers, dredge buckets and lips, sand dreging parts, dragline bucket liners, crushing equipment, brick industry components, coke hammers, rippers, sizing screens, Muller tyres, catalyst lift pipes, pump impellers, fan blades, rockwool rolls, wear plates or wear parts operating at high temperature in steelmaking industry.

Standard Dimensions

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

Mechanical Properties

Number of overlay passes
Number of overlay passes
Single pass
Classifications
DIN 8555: MF 10-GF-65-GRT

ASTM G65 – Procedure A weight loss 2)
Surface
(g max)

ASTM G65 – Procedure A weight loss 2)
75 % depth of overlay 3)
(g max)
Typical all-weld metal surface hardness 1)
Hardness: 3-layer deposit on mild steel

Typical surface hardness
Single pass
57 - 60 HRC

Typical surface hardness
Double pass
Number of overlay passes
Number of overlay passes
Multiple passes
Classifications
DIN 8555: MF 10-GF-65-GRT

ASTM G65 – Procedure A weight loss 2)
Surface
(g max)
0.12

ASTM G65 – Procedure A weight loss 2)
75 % depth of overlay 3)
(g max)
0.12
Typical all-weld metal surface hardness 1)
Hardness: 3-layer deposit on mild steel
62 - 67 HRC

Typical surface hardness
Single pass

Typical surface hardness
Double pass
60 - 65 HRC

1) Surface hardness is measured on machined flat surface just below overlay surface.

2) ASTM G65 is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most severe test method.

3) ASTM G65 wear test is conducted at 75% depth of the overlay materials to ensure consistently good wear resistance from the top surface through to the depth of 75% of the overlay.

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

Standard diameter
Metric
Standard diameter
Metric
1.2 mm0.04688 mm 0.045"
Typical all-weld metal analysis (Weight %)
C
(%)
4.0
Typical all-weld metal analysis (Weight %)
Mn
(%)
0.5
Typical all-weld metal analysis (Weight %)
Si
(%)
0.2
Typical all-weld metal analysis (Weight %)
Cr
(%)
20.0
Typical all-weld metal analysis (Weight %)
Nb
(%)
6.0
Typical all-weld metal analysis (Weight %)
Fe
Balance
Standard diameter
Metric
Standard diameter
Metric
1.6 mm0.06250 mm
Typical all-weld metal analysis (Weight %)
C
(%)
5.3
Typical all-weld metal analysis (Weight %)
Mn
(%)
0.5
Typical all-weld metal analysis (Weight %)
Si
(%)
0.2
Typical all-weld metal analysis (Weight %)
Cr
(%)
22.0
Typical all-weld metal analysis (Weight %)
Nb
(%)
6.5
Typical all-weld metal analysis (Weight %)
Fe
Balance
Standard diameter
Metric
Standard diameter
Metric
2.8 mm0.1094 mm
Typical all-weld metal analysis (Weight %)
C
(%)
5.3
Typical all-weld metal analysis (Weight %)
Mn
(%)
0.5
Typical all-weld metal analysis (Weight %)
Si
(%)
0.2
Typical all-weld metal analysis (Weight %)
Cr
(%)
22.0
Typical all-weld metal analysis (Weight %)
Nb
(%)
6.5
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
None (Self-shielded)
Welding conditions
Welding positions
Flat, half up, half down

Welding parameters recommendations

Diameter
Metric
Diameter
Metric
1.2 mm0.04688 mm 0.045"
Amperage (A)
Range
150 - 200
Amperage (A)
Optimum
180
Voltage (V)
Range
25 - 30
Voltage (V)
Optimum
28
Stick-out
Range
10 mm - 20 mm
Stick-out
Optimum
15 mm
Diameter
Metric
Diameter
Metric
1.6 mm0.06250 mm
Amperage (A)
Range
190 - 210
Amperage (A)
Optimum
200
Voltage (V)
Range
27.5 - 28.5
Voltage (V)
Optimum
28
Stick-out
Range
10 mm - 20 mm
Stick-out
Optimum
15 mm
Diameter
Metric
Diameter
Metric
2.8 mm0.1094 mm
Amperage (A)
Range
290 - 310
Amperage (A)
Optimum
300
Voltage (V)
Range
29.5 - 30.5
Voltage (V)
Optimum
30
Stick-out
Range
15 mm - 25 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
Standard package
Type
Standard package
Type
Spool
Diameter
Metric
2.8 mm0.1094 mm
Weight
Metric
25 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.