Diving deep into the composition and alloying elements of 15CrMo5 Steel grade

Composition and alloying elements of 15CrMo5 steel grade:

15CrMo5 is a low alloy steel grade that is primarily used for applications in the automotive and machinery industries. It has good mechanical properties and is known for its high strength and toughness.

Chemical composition of 15CrMo5 steel grade (percentage):

– Carbon (C): 0.13 – 0.18%
– Silicon (Si): 0.15 – 0.35%
– Manganese (Mn): 0.40 – 0.60%
– Phosphorus (P): max 0.025%
– Sulfur (S): max 0.035%
– Chromium (Cr): 1.00 – 1.30%
– Molybdenum (Mo): 0.25 – 0.35%

Alloying elements play a crucial role in enhancing the properties of 15CrMo5 steel grade. The combination of chromium and molybdenum improves its strength and hardenability, making it suitable for high-stress applications. The presence of manganese enhances the steel’s toughness and hardenability.

Mechanical properties of 15CrMo5 steel grade:

– Tensile strength: 700 – 900 MPa
– Yield strength: 400 – 700 MPa
– Elongation: 12 – 18%
– Reduction in area: 45 – 50%
– Hardness: 200 – 230 HB

These mechanical properties make 15CrMo5 steel suitable for various applications such as gears, shafts, bolts, and other components that require high strength and fatigue resistance.

In conclusion, the composition and alloying elements of 15CrMo5 steel grade provide it with excellent mechanical properties, making it suitable for demanding applications. The presence of chromium and molybdenum ensures high strength and hardenability, while manganese contributes to its toughness and hardenability.
15CrMo5 Steel grade
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