4140 vs D2
4140 vs D2 : what is the difference between 4140 steel and 8620 steel?
A： Today we are still discussing 4140 steel. As we know that 4140 steel belongs to the alloy structural steel.
B： Another common alloy steel is D2. It is 86% the same as 4140 steel.
A： But D2 steel notably contains a higher percentage of carbon and chromium.
B： The carbon content of 4140 steel is 0.38%-0.43%, while the carbon content of D2 steel is 1.40%-1.60%.
A： And the chromium content of 4140 steel is 0.80%-1.10%, while the chromium content of D2 steel is 11.0%-13.0%.
B： From the analysis of the hardness, 4140 steel is usually supplied ready heat treated to hardness in 18-22 HRC while D2 steel is 54-61 HRC HRC.
A： In terms of use, 4140 steel can be used for engineering structural parts, like high tensile shafts and gears.
B： D2 tool steel is often used to make blanking dies, cold forming dies, stamping dies, slitters, punches, trim dies, and thread rolling dies for applications when exceptional toughness is not necessary.
A： So what’s the difference between them?
B： D2 steel can have the highest ductility among steel tools.
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 D2 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.
