high-speed steel

Alloy of steel introduced in 1900. It doubled or trebled the capacities of machine shops by permitting the operation of machine tools at twice or three times the speeds possible with carbon steel (which loses its cutting edge when the temperature produced by the friction of the cutting action is above about 400°F, or 210°C). A common type of high-speed steel contains 18% tungsten, 4% chromium, 1% vanadium, and only 0.5–0.8% carbon. See also heat treating, stainless steel.

high-speed steel [′hī ‚spēd ′stēl]

(metallurgy)

An alloy steel that remains hard and tough at red heat.

High-Speed Steel

a high-alloyed steel used chiefly to fabricate cutting tools that operate at speeds approximately three to five times higher than tools made from carbon tool steel. The feasibility of achieving such cutting speeds is due to the red hardness of this steel. A tool of high-speed steel becomes soft when heated above 550°-600° C, whereas one made of carbon tool steel softens at 200° C. The steel’s red hardness is provided by alloying elements such as tungsten (W), chromium (Cr), and vanadium (V), which form highly stable carbides. In order to obtain the needed structure and properties, a tool made from high-speed steel is given special heat treatment that consists of cooling after being heated to a temperature of 1240°-1300° C and after repeated (usually three times) tempering at a temperature of 560°-620° C. The wear resistance is increased by means of cyaniding, cold treatment, broken hardening, and other methods. The popular brands of high-speed steel in the USSR include R18 (0.7-0.8 percent C, 17.5-19 percent W, 3.8-4.6 percent Cr, 1.0-1.4 percent V, and the rest iron) and R6MZ (0.85-0.95 percent C, 3.0-3.5 percent Cr, 5.5. 6.5 percent W, 3.0-3.6 percent Mo, 2.0-2.5 percent V, and the rest iron). Highspeed steels with a higher vanadium content or the addition of cobalt to provide even better cutting properties are also used.

High-speed steel is sometimes used in machine building for parts that are heated to 500°-650° C, especially for so-called heat-resistant ball bearings. In addition to hardness and hardenability, the purity of high-speed steel is important (the reduction of nonmetallic inclusions and carbide segregation to a minimum and the elimination of defects of metallurgical origin).

REFERENCE

Geller, Iu. A. Instrumental’nye stali, 2nd ed. Moscow, 1961.

A. P. GULIAEV

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No references found	At light to medium axial depths of cut (up to 5/8"), these tools can be run at very high cutting speeds and feedrates, while providing an economical alternative to the use of high speed steel or solid carbide endmills. Indexable-insert endmills by Giles, Derek / Tooling & Production This report analyzes the worldwide markets for High Speed Steel (HSS) Metal Cutting Tools in US$ Millions. Research and Markets: High Speed Steel (HSS) Metal Cutting Tools - ... by Business Wire Until recently, conventional high speed steel (HSS) taps were the only option. The productivity tap: chip management with a spiral design by Pugsley, John / Tooling & Production	High Performance Computing and Communications High Performance File System High Performance Fortran High Performance Parallel Interface High Performance Routing High Performance Serial Bus high place high plain High Point High Point State Park high polymer High Pressure high priest high Q high quartz high relief High Renaissance high resolution high school High Seas high side High Sierra High Speed Circuit Switched Data High Speed Connect high speed serial interface High speed steel high steel High Street high tech high technology High Temperature high tension high tide high tomb High Tor State Park high touch high treason high vacuum High Victorian architecture High Victorian Gothic High Victorian Italianate high voltage High Voltage Differential High Water High Wycombe high-abrasion furnace black High-Accuracy Recording high-alloy steel high-altitude bombing high-altitude disease high-altitude erythremia	High Speed Repetitive Operation High Speed Research High Speed Research Program High Speed Rewind High Speed Rotary Prism High Speed Rotor High Speed Scanning Module High Speed Sealift High Speed Sentry High Speed Sequential Retrieval HIgh Speed Serial ASIC High Speed Serial Bus High Speed Serial Data Buffer High Speed Serial Data Connector high speed serial interface high speed serial interface High Speed Serial to Parallel High Speed Service Delivery High Speed Shared Control Channel High Speed Solar Wind Stream High Speed Solutions High Speed Sorting Machine High Speed Spindle Motor High Speed Stability High Speed Standoff Missile High speed steel High Speed Steel Track High Speed Storage Unit High Speed Strike Initiative High Speed Strike System High Speed Study Group High Speed Subcarrier Committee High Speed Surface Transport High Speed Surface Vessel High Speed Switch High Speed Switch Scheduling High Speed Switching Accessory High Speed Switching Digital Service High Speed Switching Network High Speed Systems and Trains High Speed Technology High Speed Telemetry System High Speed Token Ring High Speed Top Feeder High Speed Traffic Director High speed train High Speed Transceiver Unit - Central High Speed Transceiver Unit - Remote High Speed Unit High Speed Uplink Packet Access

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References in periodicals archive

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No references found

At light to medium axial depths of cut (up to 5/8"), these tools can be run at very high cutting speeds and feedrates, while providing an economical alternative to the use of high speed steel or solid carbide endmills.

Indexable-insert endmills by Giles, Derek / Tooling & Production

This report analyzes the worldwide markets for High Speed Steel (HSS) Metal Cutting Tools in US$ Millions.

Research and Markets: High Speed Steel (HSS) Metal Cutting Tools - ... by Business Wire

Until recently, conventional high speed steel (HSS) taps were the only option.

The productivity tap: chip management with a spiral design by Pugsley, John / Tooling & Production

High Performance Computing and Communications

High Performance File System

High Performance Fortran

High Performance Parallel Interface

High Performance Routing

High Performance Serial Bus

high place