There are various types of tungsten sinkers in stock, and we can also produce tungsten sinkers according to your drawing or sample.
1. Material: tungsten or tungsten alloy
High density, so tungsten sinker contains heavier in a small volume. So our tungsten sinker suitable for sea fishing as well.
2. Nontoxic.
Our tungsten sinker made of tungsten alloy, which is friendly to the environment, and non-poisonous. And tungsten sinkers are no harm to any marine life nor people.
The main material is Tungsten, the others are Nickel, Iron or Nickel, copper. All of those materials are non-toxic.
3. The tungsten sinker got a stable property--- resistant to corrosion, resistant to rust, Which ensures a longer service life of tungsten sinker
| ASTM-B-777-87 | Class 1 | Class 2 | Class 3 | Class 4 |
| Miniumum Density(g/cc) | 16.85 | 17.15 | 17.75 | 18.25 |
| Minimum Density (lbs/in3) | 0.608 | 0.619 | 0.641 | 0.659 |
| Nominal W Content (wt.%) | 90 | 92.5 | 95 | 97 |
| Nominal Nickel Content (wt.%) | 7.1 | 5.4 | 3.6 | 2.1 |
| Nominal Iron Content (wt.%) | 2.9 | 2.1 | 1.4 | 0.9 |
| Typical Hardness (HRC) | 28 | 28 | 29 | 30 |
| Modulus of Elasticity (x106 psi) | 45 | 48 | 50 | 52 |
| Ultimate Tensile Strength Min. (ksi) | 120 | 120 | 120 | 110 |
| 0.2% Offset Yield Strength Min (ksi) | 80 | 80 | 80 | 80 |
| Minimum % Elongation (1" Gauge Length) | 10 | 8 | 6 | 2 |
