Overview
SC 4140 alloy steel is excellent for marine applications along with general structural uses. It is much stronger than standard steel and has good toughness and tensile strength. Alloy 4140 steel contains carbon, chromium, silicon, and manganese.
Typical Uses
Cylinders, marine propulsion, rolls, and shaft sleeves.
MetalTek Grade
MTEK 4140
Similar Specifications
Cast UNS: J14045
Wrought UNS: G41400
Wrought Grade: AISI 4140
Cast Grade: SC 4140
Cast ASTM: A915, A732
Military/AMS: AMS 5338
Typical Chemical Composition (% by wt.)
Aluminum: n/a
Carbon: 0.4
Chromium: 0.9
Manganese: 1
Iron: BAL
Copper: n/a
Nickel: n/a
Lead: n/a
Tin: n/a
Silicon: 0.5
Zinc: n/a
Minimum Mechanical Properties
Heat Treatment: Normalize, Quench And Temper