Understanding the Composition and Properties of 401S45 Steel Grade

401S45 is a high-precision, high-alloy cold-worked tool steel with good dimensional stability and toughness. It is primarily used for making precision cutting tools such as drills, reamers, milling cutters, and saw blades.

The chemical composition of 401S45 steel grade typically includes:
– Carbon (C): 0.35-0.45%
– Silicon (Si): 0.90-1.20%
– Manganese (Mn): 0.3-0.5%
– Chromium (Cr): 3.75-4.5%
– Molybdenum (Mo): 0.3-0.55%
– Vanadium (V): 0.05-0.15%

The mechanical properties of 401S45 steel grade are as follows:
– Hardness: 58-64 HRC
– Tensile strength: 2250-2850 MPa
– Yield strength: 1700-2200 MPa
– Elongation: 6-10%
– Impact toughness: 16-23 J/cm2

401S45 steel grade has excellent wear resistance, high compressive strength, good dimensional stability, and high resistance to softening at elevated temperatures. Its composition and properties make it suitable for high-speed cutting applications, where hardness, wear resistance, and toughness are important.
401S45 Steel grade
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