Density of s7 tool steel

Excellent combination of high strength and toughness. Useful in moderate hot work as well as cold work work tooling. Added size stability when air hardened. Heat to C hold for 2hours, slow cool 30C per hour to C then air cool.

Or heat to C, hold 2hrs. Oil quench to C, then air cool to handwarm. Double Tempering is recommended. Cool to room temperature in between tempers. Your Enquiry required. Related Products. July 14th, 0 Comments.

April 1st, 0 Comments. July 29th, 0 Comments. November 23rd, 0 Comments. November 6th, 0 Comments. Subscribe To Newsletter. Be the first to get latest promotion to your email inbox. Stay Updated. Others prefer to cryogenically treat after tempering. Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of HBW. California New Hampshire North Carolina Illinois They are generally grouped into two classes: Plain carbon steels containing a high percentage of carbon, about 0.

Alloying Agents in Alloy Tool Steels High-speed steel — M8 Pure iron is too soft to be used for the purpose of structure, but the addition of small quantities of other elements carbon, manganese or silicon for instance greatly increases its mechanical strength. Produces stable carbides and refines grain size so as to increase hardness, particularly at high temperatures.

Tungsten is used extensively in high-speed tool steels and has been proposed as a substitute for molybdenum in reduced-activation ferritic steels for nuclear applications.

Chromium increases hardness, strength, and corrosion resistance. The strengthening effect of forming stable metal carbides at the grain boundaries and the strong increase in corrosion resistance made chromium an important alloying material for steel.

This level appears to result in the best balance between hardness and toughness. Chromium plays an important role in the hardening mechanism and is considered irreplaceable. At higher temperatures, chromium contributes increased strength.

It is ordinarily used for applications of this nature in conjunction with molybdenum. Molybdenum about 0. Molybdenum increases hardenability and strength, particularly at high temperatures due to the high melting point of molybdenum. Molybdenum is unique in the extent to which it increases the high-temperature tensile and creep strengths of steel. It retards the transformation of austenite to pearlite far more than it does the transformation of austenite to bainite; thus, bainite may be produced by continuous cooling of molybdenum-containing steels.

Vanadium is generally added to steel to inhibit grain growth during heat treatment. In controlling grain growth, it improves both the strength and toughness of hardened and tempered steels. The size of the grain determines the properties of the metal. For example, smaller grain size increases tensile strength and tends to increase ductility. A larger grain size is preferred for improved high-temperature creep properties.

Example of Tool Steel — A2 Steel A2 tool steel is an air hardening, cold work steel of group A steels containing molybdenum and chromium.

Density of Materials. Strength of Materials. Elasticity of Materials. Hardness of Materials.