AISI 4130 alloy steel (UNS G41300), executive standard: ASTM A29/A29M-04
AISI 4130 is mainly used in the medium-sized machinery manufacturing industry to manufacture quenched and tempered parts with large cross-sections that work under high stress conditions, such as shafts, spindles, and high load control wheels, bolts, double head bolts, gears, etc.
Alloy steel is represented by AISI four digits. They are more sensitive to mechanical and heat treatment than carbon steel. They include different types of steel, whose composition exceeds the limits of b, c, mn, mo, ni, si, cr, and va in carbon steel.
AISI 4130 alloy steel contains chromium and molybdenum as reinforcing agents. It has low carbon content, making it easy to weld. The data table provided below provides more detailed information on the chemical composition of AISI4130 alloy steel.
4130 alloy structural steel: Executive standard: ASTM A29/A29M-04, this type of steel is usually used in the quenched and tempered state. When the carbon content is at the lower limit, it can also be used as a carburized steel with high core strength requirements, high strength and toughness, and high hardenability.
Corresponding Japanese brand: SCM430 (SCM2) Corresponding German brand: 34CrMo4 (1.7220)
application
In the medium-sized machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections that work under high stress conditions, such as shafts, spindles, and control wheels, bolts, double head bolts, gears, etc. under high loads;
4130 Mechanical property
Tensile strength σ B (MPa): ≥ 930 (95) yield strength σ S (MPa): ≥ 785 (80) elongation δ 5 (%): ≥ 12% reduction of area ψ (%): ≥ 50 Impact energy Akv (J): ≥ 63 Impact toughness value α Kv (J/cm2): ≥ 78 (8) Hardness: ≤ 229HB Sample size: Sample blank size is 25mm Heat treatment specification: Quenched at 880 ℃, water cooled, oil cooled; Temper at 540 ℃, water cooled, oil cooled.