What is 25CrMo4?

25CrMo4 (4130) is a heat-resistant, heat-treatable steel grade that is often used for components with high loads in motorsport, industry and in aviation. Among other things, screws, crankshafts, roll cages, chassis components and vehicle frames are made from this.

What is the difference between 4140 and 4130?

4130 contains 0.28-0.33% Carbon and 0.40-0.60% Manganese, while 4140 contains 0.75-1.00% Manganese and 0.38-0.43% Carbon. – 4140 alloy steel has greater hardenability and strength than 4130. – 4130 steel is easier welding than AISI 4140 steel and its wear-resistant performance is lower than in 4140.

What is 25crmo4 steel?

25HM steel, which is a Polish equivalent of 25CrMo4, is alternately classified as structural steel for heat improvement and as a boiler steel designed to work at elevated temperatures. It exhibits very good strength properties, high ductility, weldability and good hardenability.

What is the 25crmo material equivalent in other countries?

For specification, chemical composition, mechanical properties and equivalent, please see the following tables. 25CrMo material equivalent to US ASTM, European Germany DIN EN, British BS EN, France NF EN, and Japanese JIS standard. (For reference)

What is the difference between 25hm and 34crmo4?

Compared to the 35HM and 34CrMo4 grades, after heat treatment it has slightly worse strengths, but it makes up for the lower properties with much better ductility. 25HM achieves best durability values at dimensions up to 65mm after hardening in water, while after hardening in oil at dimensions and thicknesses up to 40mm.