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<blockquote data-quote="bend" data-source="post: 265756" data-attributes="member: 4811"><p>Spring steel is one of a variety of hardened steel alloys. Steel really isn't steel when you buy it, more carbon in the alloy provides hardness and wear resistance, more chromium provides corrosion resistance and so on. Spring steel is usually hardened 1040 or similar, 1040 steel has .4 % carbon, which is enough to make it hard but not brittle, probably somewhere around 30-50 rockwell (is that the unit? it's been like 3 years since I did any serious metallurgy). That's a little softer than your kitchen knife but still pretty hard. Means it'll cut well, won't wear too fast and won't snap like an over sized knife would if you tried to belt rocks and lever open crevices. Plough disks, leaf and coil springs, old knives, files and all sorts of other stuff's made from similar materials.</p></blockquote><p></p>
[QUOTE="bend, post: 265756, member: 4811"] Spring steel is one of a variety of hardened steel alloys. Steel really isn't steel when you buy it, more carbon in the alloy provides hardness and wear resistance, more chromium provides corrosion resistance and so on. Spring steel is usually hardened 1040 or similar, 1040 steel has .4 % carbon, which is enough to make it hard but not brittle, probably somewhere around 30-50 rockwell (is that the unit? it's been like 3 years since I did any serious metallurgy). That's a little softer than your kitchen knife but still pretty hard. Means it'll cut well, won't wear too fast and won't snap like an over sized knife would if you tried to belt rocks and lever open crevices. Plough disks, leaf and coil springs, old knives, files and all sorts of other stuff's made from similar materials. [/QUOTE]
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