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SKU:20994166
The O1 tool steel sheet has been precision ground and polished, meets American Society for Testing and Materials International ASTM A681 specifications, and has a standard tolerance. The O1 tool steel grade has better machinability than A2 tool steel. It must be hardened in oil, which can be done at relatively low temperatures for good dimensional stability. The sheet has been ground to achieve the precise shape and size.Steel is an iron alloy with carbon and other elements that modify the steel to achieve specific properties. In general, steels with higher carbon content have greater strength, hardness, and wear resistance, while those with lower carbon content have more formability, weldability, and toughness. Carbon steels, which include most AISI-SAE grades in the 1000 range, are classified by their level of carbon content as low (below 0.3%), medium (0.3% to 0.6%) and high (0.6% and above). Alloy steels, which include AISI-SAE grades in the 1300 and 4000 ranges and above, incorporate elements such as chromium, molybdenum, and nickel to modify properties like machinability and corrosion resistance. Tool steels, which include most grades with a letter and number grade designation, have high carbide content for wear resistance, high hardness, and the ability to hold a cutting edge. Some tool steels are designed to resist deformation when used in elevated temperatures.Tensile strength, used to indicate a material’s overall strength, is the peak stress it can withstand before it breaks. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Formability indicates how easily the material can be permanently shaped. Machinability describes how easily it can be cut, shaped, finished, or otherwise machined, while weldability characterizes the ability to be welded.
I purchased this material to make a simple chef's knife for my kitchen. It arrived exactly to spec with the material properly annealed and easy to work with. I was able to cut out the shape, drill the holes, and do all of the work necessary without any trouble. I hardened it to spec and tempered it and have been using this knife for over a year now. It holds the edge quite well and is not terrible about rust either. I was afraid the high-carbon content would give me problems with rusting. YES, it will rust if you leave it in water or attempt to put it in the dishwasher, but as long as you clean it up at some point after using it, you're not going to get any deep rust on it. Even if you get surface rust forming you should be able to soak it in vinegar for a little while and just brush it right off. I have used O1 tool steel from amazon to make several different knives and have not had any trouble with inconsistent quality or poor durability. The price is also quite good if you mess around with the widths and lengths of steel bar. Sometimes wider sizes are cheaper than narrow sizes so be sure to look around a bit before ordering if you're flexible on exactly what you need. I hope that's helpful.
