4140 vs 1045

4140 vs 1045 : what is the difference between 4140 steel and 1045 steel?

A： Today we are still discussing 4140 steel. As we know that 4140 steel belongs to the alloy structural steel.

B：1045 steel and 4140 steel have distinct chemical and mechanical characteristics which make them valuable for different applications.

A： The carbon content of both 1045 steel and 4140 steel determines the last two digits of their grade number.

B： The carbon content of 1040 steel is 0.40%, while 1045 steel has a carbon content of 0.45%.

A： The first digit “1” identifies that they are both carbon sheets of steel, and the second digit “0” identifies that there were no modifications to the alloy.

B： Note the higher concentration of Manganese in 4140 steel than 1045 steel.

A：4140 steel is chromium, molybdenum, manganese steel with good toughness, impact resistance, and fatigue strength.

B：1045 steel has slightly increased tensile strength and yield strength numbers than 4140 steel as a result of slightly higher carbon content.

A： Also, as a result of higher carbon content, 1045 steel is not as easy to weld as 4140 steel.

A： I hope that customers should consider what kind of performance you need for the steel you purchase and then buy on demand. 

B： The above is about the difference between 1045 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.