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By Izod or Charpy impact strength, a widely-published property proportional to [fracture] toughness (which is barely to be found), the toughest metal is some grades of stainless steel (INCOLOY 803 [Fe:Ni:Cr:Al:Ti:C] claims 407 J; Gall-Tough PLUS [Fe:Cr:Ni:Mn:Si:Mo:N] claims 404 J.), then nickel alloy (Haynes Hastelloy B-3 [Ni:Mo:Cr:Fe], 358 J), then titanium (grade 1, 310 J; other grades are 100-200 J), then low-carbon steels (14-339 J).

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12y ago

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