What is AISI/SAE 4140/Din 1.7255 42CrMo steel

AISI 4140 /42CrMo alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. As axles, shafts, bolts, gears, and other applications.

Similar to alloy grade AISI 4130 chrome moly alloy steel but with slightly higher carbon content.

The higher carbon content of AISI 4140/42CrMo steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steel.

However, it does have inferior weldability characteristics.

Why Choose SAE CHINA

1)All year round, SAE CHINA can guarantee our 4140/42CrMo steel bar stocks are more than 1500 tons. Different thicknesses and lengths can be customized.

2)After placing an order, shipment can be arranged immediately.

3)SAE China is a leading China supplier of 4140/42CrMo Alloy steel bars, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Alex from Indonesia send us an inquiry about the 4140/42CrMo steel flat, which required a lot of specifications and a small quantity. Allen asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Alex placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time.