The propertie s of 4130 include a carbon content of .28-.33%, manganese of 0.70-0.85%, phosphorus at 0.035%. 4130 also contains chromium and molybdenum, which are both used in the quench and temper process to provide 4130 with its strength and toughness. 4130 steel has a higher tensile strength than 4150 steel, making 4130 a good choice for applications that require high strength. 4130 is also corrosion resistant compared to 4150 which makes 4130 less susceptible to rusting after fabrication into parts.
