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Solid bar

AISI 4140 MOD / EN 1.7223

AISI 4140 is a versatile chromium-molybdenum alloy steel known for its high strength, toughness, and wear resistance, making it suitable for applications like gears, axles, and heavy machinery components. Its desirable properties are enhanced by the chromium and molybdenum content, which increase strength and hardenability. It is oil-hardenable and can be further treated to achieve a wide range of properties, allowing for its use in diverse industrial and automotive applications.

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Dimensions

50,8mm - 254mm

Application

Mechanical properties

Yield Strenght, Mpa (KSI)
min 586 (85)
Tensile Strength, Mpa (KSI)
Min 690 (100)
Elongation (%)
Min 20%
Hardness (HRC)
16-22
Impact Charpy-V, -29ºC (J)
≥27
Impact average value (J)
41

Chemical composition

C
Si
Mn
P
S
Cr
Mo
NI
Cu
V
Min.
0,38
0,15%
0,75%
0,8%
0,15%
Max.
0,43%
0,35%
1%
0,015%
0,015%
1,1%
0,25%
0,25%
0,25%
0,05%

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