60CrMnBA Steel

Material Name: 60CrMnBA

Standard: GB/T 1222-1984

Density: 7.85 cm/g*3

60CrMnBA spring steel has higher strength, ductility and toughness, better hardenability, lower sensitivity than manganese steel and higher than silicon-manganese steel. The 60CrMnBA decarburization tendency is smaller than that of silicon-manganese steel, and the temper brittleness is large. Therefore, the appropriate tempering temperature and cooling rate should be selected; generally, 60CrMnBA is used in the quenching and medium temperature tempering state for the production of heavy-duty, stress-stressed leaf springs and large diameter coil springs in the vehicle and tractor industries.

60CrMnBA Steel Chemical Composition

C:0.56～0.64
Si:0.17～0.37
Mn:0.70～1.00
Cr:0.70～1.00
S: ≤0.025
P: ≤0.025
Ni: ≤0.35
Cu: ≤0.25
B:0.0005～0.0040

Mechanical Property of 60CrMnBA

Tensile strength σb (MPa): ≥ 1225 (125) Conditional yield strength σ0.2 (MPa): ≥ 1080 (Rp0.2)
Elongation δ5 (%): ≥9 (for reference)
Area shrinkage ψ (%): ≥20 Hardness: hot rolling, ≤321HB; cold drawing + heat treatment, ≤321HB

60CrMnBA Heat treatment specification

Heat treatment specification: quenching 830 ~ 860 ° C, oil cooling; tempering 460 ~ 520 ° C.

Delivery status of 60CrMnBA

Delivery status: Hot rolled steel is delivered in heat or non-heat treated condition, and cold drawn steel is delivered in heat treated condition. , hot rolling + heat treatment, ≤ 321HB; cold drawing + heat treatment, ≤ 321HB