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Tungsten Super Shot Standard of Guangxi Chentian Metal Product Co.,Ltd.

1.Standard Specification for Tungsten Super Shot D18
Nominal Tungsten,Weight%: 95
Density,g/cc: 17.75-18.25
Hardness Rockwell “C”,max: 34
Ultimate Strength,ksi(MPa),min: 105(724)
0.2 % Offset Yield,ksi(MPa),min: 75(517)
Elongation %,min: 3
Dimensions and tolerances:+/-0.02mm
Surface Roughness, μ m: 1.6

2.Standard Specification for Tungsten Super Shot D18.5
Nominal Tungsten,Weight%: 97
Density,g/cc: 18.25-18.75
Hardness Rockwell “C”,max: 35
Ultimate Strength,ksi(MPa),min: 100(689)
0.2 % Offset Yield,ksi(MPa),min: 75(517)
Elongation %,min: 2
Dimensions and tolerances:+/-0.02mm
Surface Roughness, μ m: 1.6

Comparisons
When it comes to shotgun pellets and fowl, what determines a pellet's lethality is penetration. And penetration depth is determined by the energy per surface area of the pellet. Weight does not determine this - it's weight per area. If two pellets weigh the same, but one is smaller, the smaller one will penetrate deeper because the energy is focused on a smaller surface area on contact and is not dissipated over as wide an area.
As for comparing 18g/cc tungsten pellets vs lead (11g/cc), a Super-18 pellet will have about the same penetration energy as a lead pellet 5 sizes larger. So, a Super-18 #9 pellet will penetrate into soft matter at approximately the same depth as a Lead #4 pellet. However, in real life scenarios, on real birds, the Super-18 will actually do better vs lead, because of hardness. It will break bones better, or any other hard material, because of it's hardness and lack of flattening out when it comes into contact with any surface.
For illustration, here's a comparison of pellets of various shot material. Let's say that each pellet is going 1100 fps (muzzle velocity), at sea level and at 70 deg F. Here's the distance each type pellet will give you 1.25" of ballistics gel penetration, as well as showing the number of pellets per ounce. When you think about the penetration per pellet along with the number of pellets available to penetrate the target, these numbers will illustrate why density makes such a huge difference in a shotshell's performance on fowl.
8g/cc Steel #2 (123/oz) – 45.7 yds
11g/cc Nickel Plated lead #5 (174/oz) – 60.4 yds
12g/cc Hevi-13 #6 (208/oz) – 60.4 yds
15g/cc Fed HWT #7 (220/oz) – 81 yds
18g/cc TSS #8-1/2 (300/oz) – 84.5 yds
In addition to penetration energy and pellet count, there is a 3rd factor that doesn't show up in the math - patterning characteristics. In a nutshell, the denser and harder the shot material, the better the pellets will hold together in a pattern.
Penetration Energy

As a general rule, in terms of penetration energy, Super-18 shot is equivalent to lead shot 5 sizes larger, Hevi-shot 4 sizes larger, and Heavyweight-15 1-1/2 sizes larger. So, Super-18 9s are equivalent to lead 4s and Hevishot 5s. But you get about 360 Super-18 9s per ounce, 160 Hevishot 5s to an ounce and 135 lead 4s to an ounce. Going up in density to 18g/cc Super-18 shot allows you to go down in size, thereby greatly increasing your pellet count and pattern density. It's a recipe for huge advances in turkey shell performance.




 

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