AISI 4140 alloy steel is a chromium-, molybdenum-, and manganese-containing low alloy steel….Mechanical Properties.
Table of Contents
What are the mechanical properties of alloy steel?
AISI 4140 alloy steel is a chromium-, molybdenum-, and manganese-containing low alloy steel….Mechanical Properties.
| Properties | Metric | Imperial |
|---|---|---|
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Is 4140 a high alloy steel?
AISI 4140 is a low alloy steel. Low alloy steels rely on elements other than just iron and carbon to enhance their mechanical properties. In AISI 4140, additions of chromium, molybdenum, and manganese are used to increase the strength and hardenability of the steel.
Is 4140 good for machining?
4140 has a machinability rating at 66%
What is the composition of 4140 steel?
Chemical Composition AISI 4140 is versatile because of its simple chemistry and has the following composition: 0.40 % carbon and 0.85 % manganese which offers toughness and can be heat treated and hardened 0.1 % chromium adds to overall toughness but is not enough to be made into stainless steel.
What is the maximum hardness of 4140?
Surface hardness achievable is 600 to 650HV. Atlas 4140 can be surface hardened to 58HRC (typical value).
Is 4140 a low alloy steel?
Is 4140 a carbon steel? ANSWER: It is considered a low alloy or carbon steel. With the addition of chromium and molybdenum, it is one of the most common alloy steels.
What is the Rockwell hardness of 4140 steel?
4140 (modified) Cold Finished, Annealed Alloy Bar Stock It is offered in the cold finished annealed condition. Typical hardness is Rockwell “C” 19/24. Typical tensile strength 114,000 PSI. Its wear resistant properties far exceed that of “cold roll” steels.
What is the HRC of 4140 steel?
HRC 28/32
4140 Chromium-Molybdenum Steel 4140 PREHARD is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT.
What is the Rockwell of 4140?
4140 (modified) Cold Finished, Annealed Alloy Bar Stock Typical hardness is Rockwell “C” 19/24. Typical tensile strength 114,000 PSI. Its wear resistant properties far exceed that of “cold roll” steels. It is easy to machine and will accept additional heat treatment.
What is the tensile strength of 4140?
655 MPa 95,000 PSI
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 655 MPa | 95,000 PSI |
| Yield Strength | 415 MPa | 60,200 PSI |
| Bulk Modulus | 140 GPa | 20,300 KSI |
| Shear Modulus | 80 GPa | 11,600 KSI |
What is the hardness of 4140?
4140 (modified) Cold Finished, Annealed Alloy Bar Stock Typical hardness is Rockwell “C” 19/24. Typical tensile strength 114,000 PSI. Its wear resistant properties far exceed that of “cold roll” steels.
Is 4140 alloy steel weldable?
A：4140 steel will weld very similar to your low carbon steels. The difference is that its high carbon content can screw things up. To avoid cracking you need to preheat 4140 steel prior to welding.
How hard is 4140 tool steel?
The alloy steel is composed of chromium, molybdenum, manganese containing low alloy steel….Typical Analysis of 4140 Tool Steel.
| 4140 Prehard Alloy | |
|---|---|
| Vanadium | .03 |
| Other Elements | |
| Heat Treatment Required | N |
| Surface Brinell Hardness (HB) | 262/321 to 3″ incl.; 241/321 over 3″ to 6-1/2″ incl. |
What is the max hardness for 4140?
What is the hardness of 4140 HT steel?
4140 Chromium-Molybdenum Steel 4140 PREHARD is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 40.