ASTM1524 alloy constructional steel

1.ASTM1524 2.High strength and Good toughness 3.High quenching degree and creep strength 4.ISO9001

ASTM1524 alloy constructional steel:1524

executive standard:ASTM A29/A29M-04

A Characteristics and application scope:

With moderate intensity, cold when the deformation plasticity high, low temperature performance is good, and the corresponding the carbon content of carbon steel compared with the higher its quench-hardening ability. Generally used as a small section of the parts, and 20 Cr steel quite, can make carburizing small gear, small shaft, steel cover, the piston pin, diesel engine sleeve, automobile steering wheel axles, roll valve plunger, etc.; Also available for the tempering steel use, such as cold heading bolts or large section of the conditioning parts.

B chemical composition:

    C :0.19~0.25

    Si:0.17~0.37

    Mn:1.35~1.65

    S :Allow residual content ≤0.050

    P :Allow residual content ≤0.040

    Cr:Allow residual content ≤0.30

    Ni:Allow residual content ≤0.30

    Cu:Allow residual content ≤0.30

C mechanical property:

tensile strengthσb (MPa):≥785(80)

yield strength σs (MPa):≥590(60)

elongation     δ5 (%):≥10

relative reduction in area ψ (%):≥40

Impacting Energy Akv (J):≥47

notched bar impact strength αkv (J/cm2):≥59(6)

hardness:≤187HB

size of sample: 15 mm

D  Heat treatment standard and metallographic organization:

heat treatment regime: 1. quench,850°C, water cooling, oil cooling;tempering,200°C water cooling, air cooling; 2. quench,880°C, water cooling, oil cooling;tempering,200°C water cooling, air cooling

E  condition of delivery:With no heat treatment or heat treatment (annealing, is fire or high temperature tempering) state delivery. Requirements of the state should be in heat treatment delivery indicated in the contract.

ASTM1524 alloy constructional steel