Topics CoveredIntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther Designations
High-speed tool steels are of two types, namely molybdenum high-speed steels and tungsten high-speed steels. The molybdenum high-speed steels are also referred to as Group M steels. In the United States, 95% or more of all manufactured high-speed steels are the Group M steels. The high-speed tool steel types have equal performance but the molybdenum high-speed steels have relatively lower initial cost. To enhance performance and tool service life, tools made of high-speed tool steel can be coated with titanium carbide, titanium nitride, and other coatings using the physical vapor deposition process.
There are many types of molybdenum high-speed steels. The following data sheet will provide details relating to M34 molybdenum high-speed steel.
The following table shows the chemical composition of M34 steels.
The physical properties of M34 steels are outlined in the following table.
||7.7-8.03 x 1000 kg/m3
The mechanical properties of M34 steels are tabulated below.
Other designations that are equivalent to AISI M34 molybdenum high-speed tool steels include:
- DIN 1.3249
- B.S. BM 34
- ASTM A600
- FED QQ-T-590
- UNS T11334