Electrode Xuper 680Cgs 4.00mm 5.0 Kg
SKU: 680CGS40*Sold per kg, min order qty 5.0kg, 1 unit = 1kg
Mechanical properties are maximised for use on all difficult-to-weld steels with a special flux formulation designed to optimise weld deposit appearance, a feature demand typically required when welding tools & dies.
$107.92 Inc. GST per KG
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Mechanical properties
| Tensile strength Rm MPa | 770-850 |
| Yield strength Rp0.2 MPa | >640 |
| Elongation A5 % | 25-30 |
| Hardness as welded HV30 | 240-280 |
| Deposit density g/cm3 | ~7.6 |
| Effective yield RE | <110 % |
| Linear expansion 20-300 °C | ~13.5 x 10-6 |
| Service temperature (not for sub-zero temperature) |
<450°C for joining |
Joining and buttering
For difficult to weld steels, including: cast steel, heat-treated steel, high carbon steel, manganese steel, stainless steel, tool steel and steels of unknown composition, plus dissimilar joining.
Wearfacing
Machineable, low friction, work hardening deposit provides oxidation resistant protection for all of the above base materials.
Industrial examples
Tool and die repairs, rebuilding gear teeth, repairing cracks in machine casings, buttering layers and repairs on earthmoving and drilling equipment, and rebuilding worn shafts.
Preparation
For best results, remove contamination, cracks and worn metal from weld area. Prepare joints with a U/V (60°) or X profile (90°).
Preheating
Generally not needed. Preheating depends on the steel’s Carbon Equivalent, the work piece size, thickness and geometry.
| CE < 0.2 | preheat not essential |
| CE 0.2 – 0.4 | preheat 100-200°C |
| CE 0.4 – 0.8 | preheat 200-350°C |
Note that 12-14% Mn steels should never be preheated and the work piece temperature during welding should be kept below 250°C.
Mechanical properties
| Dia. mm | 2.5 | 3.2 | 4.0 | 5.0 |
| Current A | 45-85 | 60-110 | 90-150 | 145-200 |
Higher amperages for large workpieces, and maximum deposition rate; lower amperages for small workpieces, difficult welding positions and minimum dilution. Minimise arc length. Max. interpass temperature: 300°C. Remove slag before each new pass.
Welding polarity (+) DCEP
Post-welding treatment
Do not use heat treatment. Adjust cooling rate according to base material and size of workpiece.
Storage and handling
Electrodes are supplied in DryPak containers for optimum protection. Unprotected electrodes may absorb moisture, in which case redry for 1-2 hours at 200-250°C.
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