4145 QT

Alloy Steel

AISI 4145 Quenched & Tempered

Quenched and tempered 4145 for high-strength applications.

Chemical Composition (%)

C0.43
CR0.75
MN0.65
MO0.15
SI0.15

Mechanical Properties

Yield:845MPa; Tensile:1065MPa; Elong:14%; 58HRC

Chinese Standard

AISI/SAE

Applications

Shafts, gears, axles, bolts, connecting rods, crankshafts, forgings

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