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<blockquote data-quote="Hand Skills" data-source="post: 2571688" data-attributes="member: 103303"><p>Exactly. I mean, 420 is kind of junky - with 0.15% carbon, it is barely hardenable.</p><p></p><p>Steel can generally absorb up to .7% carbon in its crystal structure. Anything carbon content beyond that precipitates out of the solution and become 'carbides' during hardening (or more accurately, <strong> quenching</strong>).</p><p></p><p>440 is a different story. and there are MANY different grades of it. A/B/ and C are differentiated by varrying amounts of carbon, but Crucible's 440V, for example is also known as S60V - one of the original 'super' cutlery steels. (It preceded S30V, S90V and S110V - I am a nerd and own examples of each...)</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 2571688, member: 103303"] Exactly. I mean, 420 is kind of junky - with 0.15% carbon, it is barely hardenable. Steel can generally absorb up to .7% carbon in its crystal structure. Anything carbon content beyond that precipitates out of the solution and become 'carbides' during hardening (or more accurately, [B] quenching[/B]). 440 is a different story. and there are MANY different grades of it. A/B/ and C are differentiated by varrying amounts of carbon, but Crucible's 440V, for example is also known as S60V - one of the original 'super' cutlery steels. (It preceded S30V, S90V and S110V - I am a nerd and own examples of each...) [/QUOTE]
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