Austenitic steel is at its hardest right along the cutting grind, and there’s a lot of edge to work with on Spyderco’s Jumpmaster paratrooper fi xed-blade.
to mankind because it was a much improved metal, stronger and more durable than any that preceded it such as bronze, iron and copper, and it would become the most prominently used of all metals, a triumph that still holds today. But while steel has become the perfect all-around metal for use in mil- lions of applications, rust has always been its nemesis.
I 48 It’s the carbon content of steel
that makes it susceptible to corro- sion, but scientists and inventors over time found adding the alloy chromium to steel drastically in- creased its rust resistance. Once
this method had been perfected (it was fi rst patented in 1912), the term “stainless steel” was born. Over the ensuing decades stainless steel caught on like wildfi re, but chromi- um-infused alloys are still not with-
magine steel that doesn’t rust or corrode. It’s been the dream of multitudes of knife and tool users over the mil- lennia, ever since steel was invented some 4,000 years ago. The invention of this all-new alloy “steel” was a boon
out fault. The term “stainless steel” is a misnomer because, despite all its excellent defensive properties, it’s not and never has been totally immune to rust. Those who work in marine environments know this all too well, as they’ve witnessed the abuse salt in the air and water can wreak on stainless steel. Steel continued to be tweaked
over the decades and eventually sci- entists asked themselves a key ques- tion: If carbon was the culprit al- lowing steel to rust, what if it were replaced with an alloy that didn’t? Two carbon-free steels, Talonite and Stellite, which use cobalt to replace carbon, have been offered in knives over the years, but the cost of incor- porating these metals into a knife added greatly to their price, often
SYPDERCO’S NEW H-1 JUS REALITY CHECK • 2011 SPECIAL EDITION
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