Brief introduction (commonly used quenched and tempered steel)\High hardenability [High-strength parts such as aero-engine shafts, shafts, gears, fasteners
Round steel
Round steel
Fasteners, etc.
Mechanical properties
Tensile strength&(),
Elongation&(%),
Reduction of area&(%),
Impact toughness value&()
Chemical composition
Carbon.~
Silicon.~
Manganese.~
Allowable residual content of sulfur
Allowable residual content of phosphorus
Chromium.~
Nickel.~
Allowable residual content of copper
Molybdenum.~
Mechanical properties
Tensile strength&()
Yield strength&
Round Steel
Round steel
Elongation&(%)
Reduction of area&(%)
Impact power
Impact toughness value&()
Heat treatment (Quenching degree, coolant oil, tempering temperature, coolant water, oil)
Supply high quality 40CRMONI structural steel round steel with excellent quality