Chemical composition and properties of S550Q hydroelectric steel

S550Q steel plate is a hydropower steel plate, which is a low-alloy high-strength steel plate and a German standard steel plate with the characteristics of high yield and more strengthening alloy elements.

Delivery status: S550Q hydroelectric steel is delivered in the quenched and tempered state. Additional flaw detection standard requirements, flaw detection level requirements, Z-direction performance requirements, requirements for adding special alloying elements, etc. can also be added according to the needs, but it needs to be communicated by both the supplier and the buyer and specified in the contract.

Chemical composition of S550Q steel plate (melting analysis)
C:≤0.22, Si: ≤0.86, Si: ≤1.80, P: ≤0.030, S: ≤0.017, N:≤0.0060, Cu: ≤0.55, Mo: ≤0.74, Cr: ≤1.60, V: ≤0.14, Nb: ≤0.07, Ti: ≤0.07, B:≤0.0060, Ni: ≤2.10

Common specifications of S550Q steel plate: thickness: 8-280mm, width: 1600-4020mm, length: 6000-17500mm.

Main use: with low temperature resistance and high strength, S550Q hydroelectric steel is used to manufacture key components of construction machinery, mining machinery structure, etc.

S550Q hydroelectric steel is commonly used in the construction of hydropower stations and the manufacture of hydraulic turbines.