The Corresponding Of 40CrNiMoA, 4340 And SNCM439

The corresponding of 40CrNiMoA, 4340 and SNCM439

Chrome-Moly low alloy steel series contains 0.5% - 9% Cr and 0.5% - 1% Mo and lower than 0.20% carbon. 40CrNiMoA, 4340 and SNCM439 are the low alloy chromoly steel materials from the different standards. 40CrNiMoA steel is a Chinese standard chromium-molybdenum high strength steel with good hardenability and toughness. 4340 and SNCM439 are standards from American and Japanese respectively. In most situation they can be alternative materials, unless there is a special note or used for special purpose. Their differences are mainly existed in chemical elements, details showed as follows:

It was used where require high tensile and good wear-resistance property parts such as heavy-duty axles, shafts, heavy-duty gears, spindles, pins, studs, bolts, couplings, sprockets, pinions, torsion bars, connecting rods. These high tensile alloy steel has been widely used in the areas such as petrol chemical industry, automotive, steam power equipment and other high temperature services.

SHEW-E Steel Company is a professional steel distributors and supplier for over 10 years. We stock extensive materials for your high strength alloy needs such as 40CrNiMoA, 4340 and SNCM439 in shape of rod, bars and plate. All our material is fully traceable and mill test reports are available at time of purchase.