Some Facts About SAE4140 Steel
4140 Steel Applications
There are many SAE 4140 steel applications and when navigating your way to finding a new metal machining carrier/partner, it can be difficult to grasp just what’s out there. What types of metal rods, bars, and tubing are best suited for your facility, and what materials you should be using?
SAE 4140 steel is widely used in many industrial fields for its strength and versatility, and therefore is important to know about it if you are considering using it in your facility. Here is an outline of its key characteristics and most common applications.
What is SAE 4140 Steel?
SAE 4140 steel is a low-alloy steel containing chromium and molybdenum as strengthening agents. These give great corrosion resistance and strength up to around 600°. These characteristics include high strength and good machinability that can easily be heat treated for increased hardness.
4140 Steel Composition
Chromium, Cr 0.80 – 1.10
Manganese, Mn 0.75 – 1.0
Carbon, C 0.380 – 0.430
Silicon, Si 0.15 – 0.30
Molybdenum, Mo 0.15 – 0.25
Sulfur, S 0.040
Phosphorous, P 0.035
Iron, Fe Balance
Some facts about 4140 steel
4140 steel is a low alloy steel that is composed of chromium, molybdenum, and manganese.
It is considered a versatile and well-rounded material due to its good toughness, high strength, and wear resistance.
4140 steel was developed in the United States during the 1920s and is widely used in many industries today, including automotive, construction, and mining.
This steel is known for its ability to withstand high stress and wear, making it an ideal choice for high-stress applications, such as engine components and construction equipment.
4140 steel is also corrosion-resistant, making it a great choice for products that are exposed to harsh environments.
It is commonly heat-treated to increase its strength and durability, and it can be cold-worked to improve its machinability.
4140 steel is used to make various components, including gears, crankshafts, suspension systems, bulldozer blades, and oil and gas equipment.
This material is also used in the manufacture of various consumer goods, such as hand tools, sporting goods, and other products that require high strength and wear resistance.
The popularity of 4140 steel continues to grow, and it is widely regarded as one of the most versatile and well-rounded materials in the world.