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Mechanical properties and basic knowledge of S355MC steel plate

Mechanical properties of S355MC steel plate: S355MC tensile strength Rm/MPa: 430 ~ 450, S355MC yield strength RPO.2/MPa: 355, S355MC elongation after fracture A80mm%: 20.

S355MC steel plate application: This grade series is fine-grained steel with good cold formability. It is used for automobile structural parts such as automobile beams and beams that require good cold forming performance and have high or high strength requirements.
S355MC steel sheet delivery status: steel sheets and strips are delivered in hot-rolled or controlled-rolled status. The specific delivery status should be indicated in the warranty.

Basic knowledge of S355MC steel plate plane stress fracture toughness: the value determined from the tangent between the "curve" of the specimen and the critical crack propagation force curve under buckling conditions.
Fatigue: Under the action of cyclic stress and strain, the material produces local permanent cumulative damage in one or several places, and after a certain number of cycles, cracks or a sudden complete fracture occurs.

High cycle fatigue: S355MC steel plate is fatigued by more than 10.5% cycle times under the action of cyclic stress lower than its yield strength.
Low cycle fatigue: S355MC steel plate is fatigued by 10.2~10.5 plastic strain cycles under the action of cyclic stress close to or exceeding its yield strength.