4140 vs 5140
4140 vs 5140 : what is the difference between 4140 steel and 5140 steel?
A： Today we are still discussing 4140 steel. As we know that 4140 steel belongs to the alloy structural steel.
B：5140 is one structural alloy steel grade in ASTM A29 standard for general application.
A： From the analysis of their content, their carbon content is all 0.38%-0.43%.
B： And the chromium content of 4140 steel is 0.80%-1.10%, while the chromium content of 5140 steel is 0.7%-0.9%.
A： From the analysis of the hardness, 4140 steel is usually supplied ready heat treated to hardness in 18-22 HRC.
B：5140’s hardness as surface hardened is about 54 HRC.
A： In terms of use, 4140 steel can be used for engineering structural parts, like high tensile shafts and gears.
B：5140 steel is often used for low and moderately stressed parts for vehicles, engines, and machines where a hard, wear-resisting surface is needed.
A： So what’s the difference between them?
B：5140 steel can be used for the marine engineering industry, chemical processing plants, boiler & pressure vessels, and nuclear power plants, etc.
A：I hope that customers should consider what kind of performance you need for the steel that you purchase and then buy on demand.
B： By the way, for 4140 steel, we can supply the round bar, steel flat bar, and plate.
A： Rectangular pieces can be cut from flat bar or plate to your specific sizes.
B： The above is about the difference between 5140 steel and 4140 steel. If you want to know more, you can visit our website：www.otaisteel.com
A： You can also send an email or call us.
Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. We are welcome to your kind inquiry.
