34CrNi3Mo is a low-alloy steel that contains chromium (Cr), nickel (Ni), and molybdenum (Mo) as its primary alloying elements. It is also known as 34CrNiMo6 or AISI 4340 steel. The steel is often used in high-strength applications, particularly in the aerospace, oil and gas, and automotive industries.
The steel has excellent strength, toughness, and wear-resistance properties, making it ideal for use in critical and heavy-duty applications. 34CrNi3Mo steel can be heat treated to achieve a wide range of mechanical properties, depending on the intended application. It can also be quenched and tempered to increase its wear resistance and fatigue strength.
The chemical composition of 34CrNi3Mo steel typically includes carbon (0.38%-0.43%), manganese (0.60%-0.90%), phosphorus (max 0.035%), sulfur (max 0.040%), silicon (0.15%-0.35%), chromium (0.70%-0.90%), nickel (1.65%-2.00%), and molybdenum (0.20%-0.30%).
34CrNi3Mo steel is commonly used in aircraft landing gears, crankshafts, connecting rods, and transmission components. It is also used in oil and gas drilling equipment, such as drill collars and drill pipes, due to its high strength and wear resistance. In the automotive industry, the steel is often used for high-stress components such as gears, shafts, and camshafts.
Overall, 34CrNi3Mo steel is a high-strength, low-alloy steel that offers excellent mechanical properties. Its combination of strength, toughness, and wear resistance make it ideal for use in a variety of application in industries where performance and reliability are essential.
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