Overview of High-speed Tool Steels
High-speed tool steels are designed primarily for cutting tool applications. The term “high-speed” was used when these steels were first invented. The term refers to the fact that the steels could be used as cutting tools at high turning speeds on a lathe. In some cases, the turning speeds were so fast that the tools would heat to dull red color, which is about 1100°F (593°C). The ability to maintain the hardness required for cutting while at this temperature is a property known as red hardness or hot hardness, and it is the primary defining characteristic of high-speed steels.
High-speed steels exhibit high strength and hardness, but typically exhibit lower toughness than the cold work tool steels. Some, most notably M2 and powder metal M4, are used in cold work applications because of the strength and wear resistance which can be achieved.
To qualify as a high-speed steel, the chemical composition must meet certain minimum requirements, which are defined in the ASTM A600 Specification for High-Speed Tool Steels. The lowest alloy grades, M50 and M52 high-speed steels, are properly known as intermediate high-speed steels because of their lower alloy contents. The cobalt-bearing grades, such as M35 and M42, are known as super high-speed steels because they exhibit enhanced hot hardness.
High Speed Steel Round Bar Application
Broaches | Boring Tools | Chasers | Cold Forming Rolls |
Cold Heading Inserts | Hobs | Lathe and Planer Tools | Punches |
Milling Cutters | Taps | Drills End Mills | Form Tools |
Reamers and Saws |
Types Of HSS Steel Rod
l Jis G4403 Skh10 Hss High Speed Tool Steel Bar
l Hss M2 Steel Mold Steel Alloy Steel Bar Is Alloy Hot Rolled M2/1.3343
l M2 Hss Steel Round Rod Bar
l High Speed Steel Hss M42 Steel Bright Round Bar 1.3247
l 12x6mm Construction Metal Hss Hot Rolled Mild Steel Flat Bar
l Hss P18 High Speed Tool Steel Round Bar
l High Speed Steel Bar Hss Bar Round /flat Bar
l Bright Hss Round Bars
l Hss Standard Flat Steel Bar
l Hss Bohler S600 Steel Round Bar M2 Tool Steel
l Hss M42 W2 Tool Steel Round Bar
l High Speed Tool Steel Flat Bar
High Speed Steel Rod Finish
H&T | Hardened and tempered. |
ANN | Annealed |
PH | Precipitation hardened. |
Tool Steel Grades
Water-hardening tool steel | W grades | W1 Water hardening tool steel |
Hot-working tool steel | H grades | H11 Hot work tool steelH13 Hot work tool steel |
Cold working tool steel | A grades | A2 Air hardening tool steelA6 Air hardening tool steelA8 Air hardening tool steelA10 Air hardening tool steel |
D grades | D2 Air hardening tool steelD7 Air hardening tool Steel | |
O grades | O1 Oil hardening tool steelO6 Oil hardening tool steel | |
Shock-resisting tool steel | S grades | S1 Shock resisting tool steelS5 Shock resisting tool steelS7 Shock resisting tool steel |
High-speed steel | M grades | M2 High-speed tool steelM4 High-speed tool steelM42 High-speed tool steel |
T grades | T1 Air or oil hardening toolT15 Air or oil hardening tool |