Spot Sale 0.3 x 200 x 200mm High Quality Tantalum Plate
|
Thickness |
Permissible thickness deviation |
Permissible thickness deviation |
Width |
Permissible width deviation |
Length |
Allowable length deviation |
|
0.025~0.07 |
±0.005 |
±0.006 |
70~150 |
±2.0 |
≥1000 |
- |
|
>0.07~0.09 |
±0.006 |
±0.008 |
70~150 |
±2.0 |
≥1000 |
- |
|
0.1~0.20 |
±0.015 |
±0.02 |
50~300 |
±2.0 |
100~2000 |
±3.0 |
|
>0.2~0.30 |
±0.02 |
±0.03 |
50~300 |
±2.0 |
100~2000 |
±3.0 |
|
>0.30~0.50 |
±0.03 |
±0.04 |
50~500 |
±2.0 |
100~2000 |
±3.0 |
|
>0.50~0.80 |
±0.04 |
±0.06 |
50~500 |
±2.0 |
50~1200 |
±3.0 |
|
>0.80~1.0 |
±0.06 |
±0.08 |
50~500 |
±2.0 |
50~1200 |
±3.0 |
|
>1.0~1.5 |
±0.08 |
±0.10 |
50~500 |
±3.0 |
50~1200 |
±4.0 |
|
>1.5~2.0 |
±0.12 |
±0.14 |
50~500 |
±3.0 |
50~1200 |
±4.0 |
|
>2.0~3.0 |
±0.16 |
±0.18 |
50~500 |
±5.0 |
50~1200 |
±5.0 |
|
>3.0~4.0 |
±0.18 |
±0.20 |
50~500 |
±5.0 |
50~1200 |
±5.0 |
|
>4.0~6.0 |
±0.12 |
±0.24 |
50~500 |
±5.0 |
50~1200 |
±5.0 |
|
>6.0~30.0 |
±0.24 |
±0.50 |
50~500 |
±5 |
50~1200 |
±5.0 |
What Sets 99.95%–99.99% Pure Tantalum Sheet Apart?
Tantalum, a refractory metal with a melting point of 3,017°C, is already prized for its corrosion resistance and strength. However, when purified to 99.95%–99.99% (often referred to as "4N" to "5N" purity, where "N" denotes nine-nines), it transforms into a material with near-perfect atomic homogeneity. At this purity level, trace impurities-such as iron, nickel, silicon, or copper-are reduced to levels below 0.01%, eliminating their disruptive effects on the metal's inherent properties.
This level of purity is not accidental. It requires a multi-stage refining process, including:
Vacuum Arc Melting (VAM): Repeated melting in a vacuum environment to segregate and remove volatile impurities.
Electron-Beam Cold Hearth Refining (EBCR): A secondary process that uses high-energy electron beams to vaporize residual contaminants, ensuring uniform composition.
Chemical Etching & Polishing: Post-rolling treatments to remove surface oxides or contaminants, critical for applications requiring optical or electronic cleanliness.
The result is a tantalum sheet with a crystalline structure so pure that it exhibits near-ideal mechanical, electrical, and chemical behavior.
