This is interesting, now that it was brought up:
Let's look at the description for class 5.
"
Class 5: 1000 to 5000 kg (Capable of lifting small trucks, etc.)"
1,000 KG to 5,000 KG is the range of it, in this case. And the huge block of chlorophyte at the hammer
appears to be slightly larger than a player (Albeit, it can be even larger with modifiers that can increase the hammer's size).
In this case, somebody should probably pixel scale the size of the player to the hammer (Using the height of the player to calculate the length of one pixel, and then scale the dimensions of the hammer). Then try assuming the width of the hammer (Personally, I think it would be the same height of the hammer, which is somewhere around half of the length). I might actually try pixel scaling this later, but for now, I'm going to find out what material I could compare for the density of chlorophyte.
Edit: I'm using
this calc for the height of the player, seeing that it was pixel scaled beforehand. The ratio being one pixel to
0.144308943 feet (
4.39853658264 centimeters).
Here's an image I scaled (Sorry for the cut-off lines, I was trying to reduce the amount of pixels the pencil colors over, but I couldn't figure it out, so I used a paint bucket)
Blue line (Length) = 31.1 pixels.
Red line (Height) = 14.9 pixels.
31.1 x 4.39853658264 =
136.794488 centimeters.
14.9 x 4.39853658264 =
65.5381950813 centimeters.
Since the hammer itself has a huge brick of chlorophyte on it, I might assume the width is equivalent to the height.
136.794488 x 65.5381950813 x 65.5381950813 =
587567.21054 cubic centimeters
I'll use titanium for the weight, given that it's around as powerful (if not, stronger than it) ingame.
According to google, titanium is .16 oz per cc
0.16 ounces = 4.535924 grams.
4.535924 x 587567.21054 =
2665160.2119 grams, or
2665.1602119 kilograms, which is in the
Class 5 mid-range. So yeah, it could possibly be in the Class 5 lifting range to lift the hammer.