Steel

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)

Key Features: 1. Excellent corrosion resistance (the zinc layer provides cathodic protection)
2. Low-cost rust prevention (no additional coating required)
3. Good workability (meet general forming requirements)
4. Zinc layer passivation (further improve corrosion resistance)

Key Features: 1. Excellent rust resistance (the zinc layer provides electrochemical protection)
2. High surface quality (smooth coating and easy to paint)
3. Moderate cost (better price-performance ratio than stainless steel)
4. Welding protection required (zinc fumes are hazardous)

Key Features: 1. High formability (elongation ≥30%)
2. Superior surface quality (Ra≤0.8 μm)
3. Low cost (basic steel material)
4. Prone to rust (surface protection required)

Key Features: Good plasticity •​ Tough ​•​ Good weldability