We stock a wide range of shapes including: bars, tubes, sheets, plates and more. And we can cut metal to your exact specifications. See all Blog Posts. Both Oil quenching and Air-hardening both reduce the distortion and higher stress caused by the quick water quenching.
Because of this they are less likely to crack. The most typical applications for this type of tool steel is in forging dies, die-casting die blocks, and drawing dies. High speed class T-type and M-type tool steels are used for cutting tools when strength and hardness must be retained at high temperatures. However, unlike Silver Steel, Stainless Steel has a minimum of Therefore, while Stainless Steel is rust proof, Silver Steel will rust easily when exposed to air or moisture.
Another key difference is that Silver Steel is magnetic, while the majority of Stainless Steel is not. Silver Steel products may feature different levels of hardness, depending on how much Carbon they contain and how they are manufactured. The Chromium content also adds to the hardness characteristics. During the heat-treating process, manufacturers heat the steel to extreme temperatures, then rapidly cool the material in a water or brine quenching solution.
This added hardness gives the steel extra wear resistance but also makes it more brittle. Standard annealed Silver Steel offers a hardness of C27 on the Rockwell hardness scale. It can be made with a hardness factor as high as C64 if subject to proper heat-treating techniques. The uses of this material are varied. In workshops, it is most commonly used for the main shafts of hand tools like screwdrivers, files and punches. M42 tool steel can be heat treated to a hardness greater than any other high speed steel and achieves the highest level of red hardness making it ideal stainless steels or any other hard to machine grades.
This material has been hardened to Rc. Typical uses include milling cutters, broaches, taps, drill bits, reamers, punches, saws, knives, and thread rolling dies. S7 tool steel is a shock resisting grade with superior impact properties combined with high toughness, machinability and size stability during heat treating. Typical applications include: plastic molding dies, riveting diesk, forming dies, chisels, punches, blanking dies, die casting, master hobs, shear blades, engraving dies, moll points, drills, notching dies, bending dies.
W1 tool steel is a water hardening grade and one of the oldest grades of tool steel around. Despite the advances of the air and oil hardening grades, W1 maintains its usefulness in applications that require a softer core, high hardness and machinability, along with a relatively low cost. W1 is shallow hardening, possesses great toughness and is one of the easiest grades to grind and machine.
With its high carbon content it can often be used without further heat treatment methods. Common applications include: drills, knives, collets, pipe cutters, forming dies, gauges, embossing dies, draw punches, bushings, forming rolls, wood augers.
Chemical Composition: Carbon: 0. A6 tool steel is an air-hardening, cold work grade which combines the advantages of a low hardening temperature range similar to that of oil hardening grades along with deeper hardening properties comparable to air hardening grades. Oil removes heat more slowly than water, reducing the thermal shock that occurs when orange-hot steel is plunged into water. Reducing that thermal shock minimizes the risk of cracking or distortion in the hardened piece.
With an alloy as simple as O1, containing so few alloying elements, the hardened grain structure is as fine as possible which allows honing to the sharpest possible edge.
But there is a trade off. During heat treatment the chromium addition combines with some of the carbon in the alloy to form chromium carbides — tough, hard particles dispersed through the steel. However, during heat treatment, the chromium carbides can grow quite large — large enough to affect your ability to hone the edge as close to zero-radius as you may want.
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