High-speed steel and alloy steel, which one is suitable for drills ?HSS is used as the drills, Otai provides the M2, M42, M35 steel for our customers.
There are many kinds of drill bits on the market, such as twist drill, inner cold twist drill, step drill, inner cold step drill, and other non-standard drill bits. But the materials used in these drills are generally summed up in two broad categories.
High-speed steel (HSS) is a tool steel with rigid hardness, high wear resistance, and high heat resistance. High-speed steel tool is a tool than ordinary tools to be tough, easier to cut, high-speed steel than carbon tool steel has better toughness, strength, heat resistance, cutting speed than carbon tool steel (iron-carbon alloy) is much higher, so it is called high-speed steel; And hard alloy is better than high – speed steel, cutting speed can be increased 2-3 times.
Features:
High-speed steel red hardness up to 650 degrees.
HSS has good strength and toughness, sharp cutting after sharpening, stable quality, and is generally used to make small and complicated cutting tools.
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Cemented carbide(alloy steel)
The carbide bit is mainly made of tungsten carbide and cobalt carbide, which account for 99% of all the components and 1% of other metals, so it is called tungsten steel (cemented carbide). Tungsten steel is a sintered composite material consisting of at least one metal carbide. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, tantalum carbide are common components of tungsten steel.
features:
The red hardness of cemented carbide can reach 800-1000 degrees.
The cutting speed of cemented carbide is 4-7 times higher than that of HSS, and the cutting efficiency is high.
The disadvantages are low flexural strength, poor impact toughness, high brittleness, and low shock resistance.
Commonly speaking, HSS is used as the drills, Otai provides the M2, M42, M35 steel for our customers. Welcome to send me an inquiry.
