It has long been said that Kai blades are extra thick, super thick, or the thickest blades. This thinking might have started from what is stated at a major website, where Kai apparently sells their blades stating, "Made of a thicker gauge steel than other brands . . ." Is this true? Let's take a look at the new DE Razor Blade Dimensions Table in the ShaveWiki!
According to the table, which is based on rigorous measurements with many samples per blade, the Kai blade is 0.100 mm thick on average. However, out of the seven (7) different blades so far in the table, three (3) of them have a thickness of 0.100 mm. The BIC Chrome Platinum and the Derby Extra (Pre-2016) have the same average thickness of 0.100 mm as the Kai. Blade thickness generally ranges from 0.09 mm to 0.1 mm, so the 0.100 mm thick Kai blade is thicker "than other brands", as stated, but it is NOT thicker than ALL other brands. There are other blades with the same thickness, but the manufacturers of those blades do not make the statement that Kai apparently does. (Based on my unpublished measurements, it appears that there are other blades that are slightly thicker than Kai blades, so Kai blades do not appear to be the thickest blades, but I am not comfortable making a definitive statement without published data based on more measurements with more samples of those other blades.)
Myth busted.
According to the table, which is based on rigorous measurements with many samples per blade, the Kai blade is 0.100 mm thick on average. However, out of the seven (7) different blades so far in the table, three (3) of them have a thickness of 0.100 mm. The BIC Chrome Platinum and the Derby Extra (Pre-2016) have the same average thickness of 0.100 mm as the Kai. Blade thickness generally ranges from 0.09 mm to 0.1 mm, so the 0.100 mm thick Kai blade is thicker "than other brands", as stated, but it is NOT thicker than ALL other brands. There are other blades with the same thickness, but the manufacturers of those blades do not make the statement that Kai apparently does. (Based on my unpublished measurements, it appears that there are other blades that are slightly thicker than Kai blades, so Kai blades do not appear to be the thickest blades, but I am not comfortable making a definitive statement without published data based on more measurements with more samples of those other blades.)
Myth busted.