420 dernier nylon is stronger than 150 dernier nylon. The "dernier" measurement refers to the thickness of the fibers, with a higher number indicating a thicker and generally more durable material. Therefore, 420 dernier nylon has a greater tensile strength and is better suited for applications requiring more durability and resistance to wear.
for monofilament filament, the round diameter is about 214 micron for multi filament yarn depends to cross section of fibers and the rate of twisting
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The ballistic nylon will be a higher denier (thickness of the thread). Also will be shiny/glossy compared to the matte finish of polyester. Ballistic nylon will be much more durable and much less likey to tear or scuff. You can get higher denier polyester (900, 1200, 1800) which will be better for wear and tear. The price will reflect this however as 600d poly is low to mid price point whereas the others are higher.
4203 = 420 x 420 x 420 = 74088000
21% of 420= 21% * 420= 0.21 * 420= 88.2
95% of 420 = 399 = 95% * 420 = 95%/100% * 420 = 0.95 * 420 = 399
88% of 420= 88% * 420= 0.88 * 420= 369.6
38% of 420= 38% * 420= 0.38 * 420= 159.6
35% of 420 = 35% * 420 = 0.35 * 420 = 147
420
95% of 420 = 95% * 420 = 0.95 * 420 = 399