ASTM A633 Structural Carbon Steel Coil | Normalized HSLA Steel | Welded Structures

🟧 Product Overview

ASTM A633 Structural Carbon Steel Coil is a normalized high‑strength low‑alloy steel designed for welded structures requiring improved notch toughness and impact resistance. It is widely used in bridges, offshore structures, heavy machinery, and other demanding engineering applications.

A633 is typically supplied in Grades C, D, and E, each offering high strength combined with good toughness. Compared with conventional structural steels, ASTM A633 provides enhanced performance in low‑temperature and dynamic loading conditions, making it suitable for critical welded structures.

🟧 Standards

• ASTM A633 – Normalized High‑Strength Low‑Alloy Structural Steel for Welded Structures

Structural Carbon Steel Standard – International Comparison Table

Country	Standard	Common Grades
China	GB/T 700 / GB/T 1591	Q235B, Q275, Q355B/C/D/E
America	ASTM A36 / A572 / A633 / A656	A36, A572 Gr50, A633, A656
Germany	DIN 17100	ST37‑2, ST52‑3
Japan	JIS G3101	SS400, SS490, SS540
France	NF EN 10025	S235JR, S275JR, S355JR
Britain	BS EN 10025	S235JR, S275JR, S355JR
International (EN)	EN 10025‑2	S235 / S275 / S355

🟧 Available Grades

• ASTM A633 Grade C
• ASTM A633 Grade D
• ASTM A633 Grade E

🟧 Product Specifications & Available Sizes

Dimensions

(International standard display)

• Thickness: 1.8 – 20 mm
• Width: 1000 – 2000 mm
• Coil ID: 508 mm / 610 mm
• Coil OD: 900 – 2000 mm
• Coil Weight: 3 – 15 MT

Regular Sizes (mm)

Size	Size
1.8 × 1250 × C	4.5 × 1500 × C
2.0 × 1250 × C	4.75 × 1500 × C
2.5 × 1250 × C	5.5 × 1500 × C
2.75 × 1250 × C	5.75 × 1500 × C
2.75 × 1500 × C	7.5–11.75 × 1500 × C
3.0 × 1500 × C	5.75 × 1800 × C
3.5 × 1500 × C	5.75 × 2000 × C
3.75 × 1500 × C	7.75 × 2000 × C

🟧 Chemical Composition (ASTM A633 Grade C – typical)

Element	Max (%)
C	0.20
Mn	1.15–1.50
P	0.035
S	0.040
Si	0.15–0.50
Nb / V	Micro‑alloyed (when specified)

(Values are typical for Grade C; other grades are similar HSLA compositions with controlled carbon and alloying for toughness.)

🟧 Mechanical Properties (ASTM A633 Grade C – typical)

Property	Value
Yield Strength	≥ 345 MPa
Tensile Strength	485–620 MPa
Elongation	≥ 18%
Impact Toughness	Improved notch toughness (normalized condition)

🟧 Physical Properties

• Density: 7.85 g/cm³
• Modulus of elasticity: 200 GPa
• Thermal expansion: 12×10⁻⁶ /K

🟧 Manufacturing Processes

• Hot rolling
• Normalizing
• Pickling
• Leveling
• Slitting / Cutting to length
• Surface oiling

🟧 Primary Industry Usage

• Welded steel structures
• Bridges and heavy structural components
• Offshore and marine structures
• Heavy machinery and equipment
• Engineering and construction projects
• Fabricated load‑bearing parts

🟧 Why Use ASTM A633 Structural Carbon Steel Coil

• Normalized HSLA steel with high strength and toughness
• Excellent performance in welded structures and low‑temperature service
• Good weldability and formability for complex fabrications
• Suitable for critical structural applications with demanding loading conditions

🟧 Why Choose Jaron Steel

• Complete range of structural HSLA steel coils
• Consistent quality and dimensional accuracy
• Custom coil cutting and slitting services
• Third‑party inspection (SGS / BV) available
• Export‑grade seaworthy packaging
• Reliable lead times for global projects