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tantalum bar astm b386Available in a wide range including nut, screw, ring, wire, foil, sheet, rod, strip, plate, tube
tantalum bar specification |
1.Introduction:
Tantalum is dark, dense, ductile, very hard, easily fabricated, and highly conductive of heat and electricity. The
metal is renowned for its resistance ,as the metal powder, is in the production of electronic components, mainly
capacitors and some high-power resistors. Tantalum electrolytic capacitors exploit the tendency of tantalum to
form a protective oxide surface layer, using tantalum powder, pressed into a pellet shape, as one "plate" of the
capacitor, the oxide as the dielectric, and an electrolytic solution or conductive solid as the other "plate". Because
the dielectric layer can be very thin (thinner than the similar layer in, for instance, an aluminium electrolytic capacitor),
a high capacitance can be achieved in a small volume. Because of the size and weight advantages, tantalum
capacitors are attractive for portable telephones, personal computers, and automotive electronics.
2.GB 14841 as follows:
| Type | Manufacturing Method | Supplying State. | Diameter | Length |
| mm | ||||
Ta1 Ta2 TaNb3 TaNb20 | Forging | Hard State
Annealed Condition | 3.0-6.5 | 500-1500 |
| >6.5-10.0 | 400-1500 | |||
| >10-18 | 300-1200 | |||
| Hot Forging State Annealed Condition | >18-25 | 200-2000 | ||
| >25-40 | 150-4000 | |||
| >40-50 | 100-3000 | |||
| >50-65 | 100-1500 | |||
| Extrusion | Hot Extrusion State Annealed Condition | 18-25 | 200-2000 | |
| >25-40 | 150-2000 | |||
| >40-65 | 100-500 | |||
FTa1 FTa2 | Rolling | Hard State
Annealed Condition | 3.0-5.0 | 500-1500 |
| >5.0-12 | 300-1200 | |||
3.Tolerance
| Diameter | Diameter Tolerance | Length | Tolerance | |||
| forging rod | Extruded Rods | rolling rod | ground rod | |||
| 3.0-4.5 | ±0.05 | - | ±0.05 | - | 500-1500 | + 5 |
| >4.5-6.5 | ±0.10 | - | ±0.10 | - | 500-1500 | + 5 |
| >6.5-10.0 | ±0.15 | - | ±0.15 | - | 400-1500 | + 5 |
| >10-16 | ±0.20 | - | ±0.20 | - | 300-1200 | + 5 |
| >16-18 | ±1.0 | - | - | ±0.30 | 200-2000 | + 20 |
| >18-25 | ±1.5 | ±1.0 | - | ±0.40 | 200-2000 | + 20 |
| >25-40 | ±2.0 | ±1.5 | - | ±0.50 | 150-4000 | + 20 |
| >40-50 | ±2.5 | ±2.0 | - | ±0.60 | 100-3000 | + 20 |
| >50-65 | ±3.0 | ±2.0 | - | ±0.80 | 100-1500 | + 20 |
tantalum bar photo shows |
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