4140 alloy plates – 4140 Quenched & Tempered Steel Plate | OTAI
What is 4140 steel
AISI 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components. For example, 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 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 OTAI
1)All year round, Otai can guarantee our 4140 alloy plates stocks are more than 1500 tons. Different thicknesses and lengths can be customized.
2)After placing an order, shipment can be arranged immediately.
3)Otai is a leading China supplier of 4140 steel, working with Uddeholm, Thyssenkrupp, with ISO9001 certified.
Customer’s story
We would like to share a real case of our customer with you. Tim from Singapore send us an inquiry about the 4140 steel plate, which required a lot of specifications and a small quantity. Tim 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 Marco placed the order successfully. After receiving the goods, he said that he would seek our cooperation for a long time. (4140 steel supplier)
FAQ
What is the hardness of 4140?
It is offered in the cold finished annealed condition. Typical hardness is Rockwell “C” 19/24. Typical tensile strength 114,000 PSI. Its wear-resistant properties far exceed that of “cold roll” steels.
What is 4140 steel used for?
It can be used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with great load and etc.
Is 4140 steel stainless steel?
NO. it’s alloy steel.
Is 4140 steel good for knives?
While 4140 steel may not be commonly used for knives, you can find it used for many industries, including the defense, agricultural, and automotive industries.
Is 4140 good for forging?
4140 has high strength, hardenability, good toughness, small deformation during quenching, high creep strength, and long-lasting strength at temperature.
