4140 Alloy Round Bar Stock

4140 Alloy is the most common steel for general purpose use due to its use of chromium and molybdenum.

4140 Alloy

4140 Alloy is the most common steel for general purpose use due to its use of chromium and molybdenum.

It’s a strong, durable steel with a versatile composition that also resists corrosion. The 4140 alloy steel specification is typically used in automotive, agricultural, construction and heavy equipment industries.

Maintaining a high level of performance in heavy-duty equipment and machinery is all about having a tough steel alloy that’s made to last. 4141 alloy steel specification is a chromium molybdenum alloy steel that is ideal for any heavy-duty operations that require guaranteed durability.

O'Hare 4140 Alloy

O’Hare Precision Metals can provide a wide range of services for either company-supplied or customer-supplied components and materials. Just like how we can offer yo the best 4140 Alloy bar stocks and 4140 Alloy round bar stocks in O’Hare!

Machinability & Welding

4140 is a medium carbon steel with a high strength. With the safe preparation, welding 4140 can be done quickly and easily. The same welding advice applies to other steels in this group, such as 4130 and 4340.

Applications

Shafts, conveyor pins & rolls, motor shafts, pinch bars, hydraulic machinery, nuts and crankshafts and gears are just some of the many applications of 4140 Alloy

Properties

Density: 

Melting point: 

Tensile strength: 

Hardness, Brinell: 

Yield strength: 

Elongation at break: 

Bulk modulus: 

Shear modulus: 

Elastic modulus: 

Poisson’s ratio: 

0.284 lb/in³

2580°F

95000 psi

197

60200 psi

25.70%

20300 ksi

11600 ksi

27557-30458 ksi

0.27-0.30

Chemical Properties

Iron 

Carbon 

Chromium 

Silicon 

Molybdenum

Manganese 

Phosphorous 

96.785 – 97.77

0.380 – 0.430

0.80 – 1.10

0.15 – 0.30

0.15 – 0.25

0.75 – 1.0

0.035

Do you have questions about 4140 Alloy. Just contact our highly skilled personnel in O’Hare Precision Metals. They are dedicated to providing smooth-flow service.

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