Comparison of CNC Machining Materials
The information contained herein is typical values intended for reference and comparison only. They shall NOT be used as a basis for design specifications or quality control.
Steel Alloy 4140
Impact Resistance, Fatigue Resistant
AISI 4140 Alloy Steel is a medium-carbon chromium-molybdenum steel with a carbon content of about 0.38–0.43%. It offers an excellent combination of strength, toughness, wear resistance, and machinability. When heat-treated, it provides outstanding mechanical properties, making it widely used in gears, crankshafts, connecting rods, bolts, and critical components in the oil and gas industry.
Stainless Steel 304
Corrosion Resistant, Economical, Machinability
stainless steel 304 is also known as 18/8 stainless steel, which contains approximately 18% chromium (Cr) and 8% nickel (Ni). It not only possesses excellent oxidation resistance and corrosion resistance, but also has good workability and surface quality. Currently, it is the most widely used stainless steel grade in industrial manufacturing and civil applications.



