Steel Q345

Alternative Designations: Steel Q345-Steel

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Description

Q345 is a low-alloy steel containing manganese and silicon with yield strength ≥345MPa. It features better weldability than Q235 and has been widely used in load-bearing structures for construction and machinery.

Key Features

1. High strength (tensile strength 470-630 MPa)
2. Good weldability (heat input control required)
3. Low-temperature toughness (maintain performance at -20°C)
4. Cost-effective (better performance-cost ratio than ordinary carbon steel)