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Presharpened Tungsten Electrodes 2% Thoriated
EWTh-2, WT20 |
| Normal Quality: Re Oxideis Coarse and Undispersed AMT Quality: Re Oxide is Fine and Homogenous Dispersed |
Quality of Tungsten Electrodes is mostly depending on what Rare Earth metal oxide in tungsten, the percentage and the micro uniformity.
As above micro pictures showed: the Rare Earth metal oxide in AMT tungsten electrodes is Fine and Homogenous dispersed, while the Rare Earth metal oxide in normal tungsten electrodes is coarse and undispersed. |
| The fine quality of AMT Tungsten Electrodes is owing to the process during Rare Earth metal nitrate dipping uniformly with tungsten, and strict sintering temperature control. |
| 1. Pre-sharpened or pre-ground Tungsten Electrodes by grinders or sharpeners |
AMT's preground or presharpened tungsten electrodes are pre-sharpened in the longitudinal direction by machine grinders or sharpeners rather than by hands at very consistent quality, which keeps the welding arc is easier starting and higher penetration than the presharpened tungsten electrodes in the circle direction. |
| 2. Specification and Packing |
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| 2.1 Specification According to ISO 6848 |
Designation |
Composition, Impurities total ≤ 0.10% |
Identification Color |
Oxide Additive |
Tungsten |
WT20 |
2% Thoriated, ThO2: 1.70-2.20% |
Balance |
Red |
WL15 |
1.5% Lanthanated, La2O3: 1.30-1.70% |
Balance |
Gold |
WC20 |
2% Ceriated, CeO2: 1.80-2.20% |
Balance |
Gray |
WZ8 |
0.8% Zirconiated, ZrO2: 0.70-0.90% |
Balance |
White |
WL10 |
1% Lanthanated, La2O3: 0.90-1.20% |
Balance |
Black |
WL20 |
2% Lanthanated, La2O3: 1.80-2.20% |
Balance |
Blue |
WP |
Pure Tungsten |
≥ 99.95% |
Green |
WT10 |
1% Thoriated, ThO2: 0.80-1.20% |
Balance |
Yellow |
WZ3 |
0.3% Zirconiated, ZrO2: 0.15-0.50% |
Balance |
Brown |
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| Typical size: Diameter 1.0/1.6/2.0/2.4/3.0/3.2/4.0/4.8/6.4/8.0/10.0(mm) Diameter tolerance: ±0.05mm for diameter < 2.5mm, ±0.10mm for diameter > 2.5mm Length tolerance: (150-175)±1.0 mm Packing: 100pcs./bundle for 1.0-2.4mm (50pcs. for 3.0-4.0mm, 25pcs. for 4.8-6.4mm) with sealed plastic bag. Or 10pcs./plastic box for 1.0-4.0mm (5pcs./plastic box for 4.8-6.4mm). |
| 2.2 Specification According to AWS A5.12 |
Designation |
Composition, Impurities total ≤ 0.10% |
Identification Color |
Oxide Additive |
Tungsten |
EWTh-2 |
2% Thoriated, ThO2: 1.70-2.20% |
≥ 97.30% |
Red |
EWLa-1.5 |
1.5% Lanthanated, La2O3: 1.30-1.70% |
≥ 97.80% |
Gold |
EWP |
Pure Tungsten |
≥ 99.95% |
Green |
EWLa-1 |
1% Lanthanated, La2O3: 0.80-1.20% |
≥ 98.30% |
Black |
EWZr-1 |
0.8% Zirconiated, ZrO2: 0.15-0.40% |
≥ 99.10% |
Brown |
EWCe-2 |
2% Ceriated, CeO2: 1.80-2.20% |
≥ 97.30% |
Orange |
EWTh-1 |
1% Thoriated, ThO2: 0.80-1.20% |
≥ 97.30% |
Yellow |
EWLa-2 |
2% Lanthanated, La2O3: 1.80-2.20% |
≥ 98.30% |
Blue |
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Typical size: Diameter 0.040" -1/16" -3/32" -1/8" -5/32" -3/16"- 1/4" Diameter tolerance: ( ±0.002") for diameter < 3/32", (±0.003") for diameter > 3/32" Length tolerance: 6"-7"±(1/16)" Packing: 100pcs./bundle for 0.040"-5/32" (50pcs. for 1/8" and 5/32", 25pcs. for 3/16" and 1/4") with sealed plastic bag. Or 10pcs./plastic box for 0.040"-5/32" (5pcs./plastic box for 3/16" and 1/4"). |
| 2.3 Specification According to JIS Z 3233 |
Designation |
Composition, Impurities total ≤ 0.10% |
Identification Color |
Oxide Additive |
Tungsten |
YWP |
Pure Tungsten |
99.95% |
Green |
YWTh-1 |
1% Thoriated, ThO2: 0.80-1.20% |
Balance |
Yellow |
YWTh-2 |
2% Thoriated, ThO2: 1.70-2.20% |
Balance |
Red |
YWLa-1 |
1% Lanthanated, La2O3: 0.90-1.20% |
Balance |
Black |
YWLa-2 |
2% Lanthanated, La2O3: 1.80-2.20% |
Balance |
Yellow-Green |
YWCe-2 |
2% Ceriated, Ce2O3: 1.80-2.20% |
Balance |
Gray |
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Typical size: Diameter 1.0/1.6/2.0/2.4/3.0/3.2/4.0/4.8/6.4/8.0/10.0(mm) Diameter tolerance: (±0.05mm) for diameter < 2.5mm, (±0.10mm) for diameter > 2.5mm Length tolerance: 150-175(±1.0) mm Packing: 100pcs./bundle for 1.0-2.4mm(50pcs. for 3.0-4.0mm, 25pcs. for 4.8-6.4mm) with sealed plastic bag. Or 10pcs./plastic box for 1.0-4.0mm (5pcs./plastic box for 4.8-6.4mm).
Note: Other specifications can be available as per customer's requirements. |
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