Unveiling the Properties and Uses of 55Si8 Steel Grade

– Grade: 55Si8
– Steel Type: Spring Steel
– Chemical Composition:
– Carbon (C): 0.52-0.60%
– Silicon (Si): 1.50-2.00%
– Manganese (Mn): 0.70-1.10%
– Phosphorus (P): max 0.025%
– Sulfur (S): max 0.025%
– Chromium (Cr): max 0.30%
– Nickel (Ni): max 0.30%
– Copper (Cu): max 0.25%
– Iron (Fe): Remaining balance

Mechanical Properties:
– Tensile Strength: 1300-1600 MPa
– Yield Strength: 1150-1300 MPa
– Elongation: min 8%
– Modulus of Elasticity: 210 GPa
– Hardness (HB): max 400

– 55Si8 steel grade is primarily used in the manufacturing of various types of springs, including helical and flat springs.
– It is commonly used in automotive applications such as suspension springs, valve springs, and clutch springs.
– The high tensile strength and good fatigue resistance make it suitable for heavy-duty applications.
– Other uses include machine components, tools, and construction equipment requiring high strength and durability.

Please note that the specifications and uses mentioned above are general guidelines and may vary depending on specific manufacturing processes and applications. It is always recommended to refer to the manufacturer’s specifications for accurate information.
55Si8 Steel grade