4140 steel bar – 4140 Prehard | Heat Treated Bars | 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 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)Otai is a leading China supplier of 4140 steel bars, working with 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 steel flat, which required a lot of specifications and a small quantity. Alex 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.
FAQ
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.
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 steel stainless steel?
NO. it’s alloy steel.
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.
What is 4140 steel's mechanical properties?
On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius.
4140 strength, high hardenability, good toughness, quenching deformation of small, high temperature creep rupture strength, and high.
