Chemical Composition

Element	Content Range
Carbon (C)	≤ 0.19%
Silicon (Si)	0.30–0.65%
Manganese (Mn)	0.80–1.25%
Phosphorus (P)	≤ 0.04%
Sulfur (S)	≤ 0.05%
Copper (Cu)	0.25–0.40%
Chromium (Cr)	0.40–0.65%
Nickel (Ni)	≤ 0.40%
Vanadium (V)	0.02–0.10%

Production Process

product-554-265

International Standard Grades

Country/Standard	Equivalent Grade
ASTM (USA)	A588
EN (Europe)	S355J2G1W
DIN (Germany)	WTSt 52-3
BS (United Kingdom)	WR 50 C
UNI (Italy)	Fe 510 D2K1

Common Sizes

Thickness (mm)	Common Width (mm)	Common Length (mm)
4.5–20	1500–2500	6000–12000

Advantages of ASTM A588

Advantage	Details
1. Excellent Corrosion Resistance	- Forms dense rust layer (α-FeO(OH)) to prevent deep corrosion. - 2–8x more resistant to atmospheric corrosion than carbon steel.
2. High Strength & Toughness	- Yield strength ≥345 MPa (50 ksi), reduces structural weight. - Good ductility and impact resistance for seismic designs.
3. Cost-Effective Longevity	- Low maintenance (minimal painting). - Lower lifecycle cost vs. regular steel (despite higher initial cost).
4. Weldability & Fabricability	- Low carbon equivalent; compatible with standard welding/bending processes.
5. Environmentally Friendly	- Reduces VOC emissions from fewer paint coatings. - Can be used bare for rustic aesthetics.
6. Wide Application Range	- Bridges, buildings, transportation, and outdoor structures. - Performs well in cold climates (-29°C/-20°F).
7. Standardized Quality	- Strict ASTM specifications ensure consistent chemistry and mechanical properties.

Packaging

FAQ

Q: What is ASTM A588 Medium Plate used for?

A: It's a high-strength low-alloy steel plate used for welded bridges, buildings, heavy machinery (e.g., mining trucks, excavators), and structures needing corrosion resistance in outdoor environments.

Q: Can ASTM A588 be welded easily?

A: Yes, it has good weldability due to its low carbon content. Standard welding methods (like arc welding) work well, but preheating may be needed for thick plates.

Q: What's the difference between ASTM A588 and regular steel plates?

A: ASTM A588 has better corrosion resistance and higher strength. Regular steel plates rust faster and require more paint or coating for protection.