<font face="Verdana, Arial" size="2">420J2 Stainless Steel - Again, just because it's "100% pure Stainless Steel" doesn't mean it's all that great. 420 Stainless Steel could normally produce a fair wallhanger sword. However, 420J2 has very little carbon content, so the Rockwell hardness won't be higher than 53 Rockwells. Even though many Marto and Martespa products fall into this range - and the spines (not edges) of Japanese swords are in this range - the unfortunate fact that 420J2 swords are so quickly churned out by these rip-off overseas companies that they've been independently rated at a mere 45 Rockwells! That means that a Marto wallhanger could cut through it! So why do these companies use 420J2 for their swords? First off, it's extremely easy to grind - almost like butter. But because they can grind ten swords to shape in the same time it takes to make, say, a Marto, the fact is that their greed for money exceeds the importance to them that their swords cannot hold an edge after going through cardboard a few times! Think of 420J2 as the stainless equivalent of mild steel - with very low carbon content and thus will not harden.</font>
<font face="Verdana, Arial" size="2">Originally posted by Anthony Lombardo:
There have been some tests done to show that 420 HC (higher carbon) is superior to 440A.</font>
<font face="Verdana, Arial" size="2">Originally posted by Darkjedi:
Sorry about the typo in 420j2 to 420js. I am just trying to figure out what Cold Steel is doing with their new product lineup.