🟧 Product Overview

ASTM A656 Structural Carbon Steel Coil is a hot‑rolled high‑strength low‑alloy steel designed for applications requiring superior strength, good formability, and excellent weldability. It is widely used in truck frames, construction equipment, building structures, and heavy machinery.

A656 is available in Grades 50, 60, 70, and 80, offering progressively higher strength levels. These grades provide a strong combination of toughness, ductility, and structural performance, making them suitable for demanding load‑bearing and fabricated components.

🟧 Standards

• ASTM A656 – Hot‑Rolled Structural Steel, High‑Strength Low‑Alloy, with Improved Formability

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 A656 Grade 50
• ASTM A656 Grade 60
• ASTM A656 Grade 70
• ASTM A656 Grade 80

🟧 Product Specifications & Available Sizes

Dimensions

(International standard display — not affected by Regular Sizes)

• 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)

(Your provided table)

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 A656 Grade 50 – typical)

Element	Max (%)
C	0.18
Mn	1.00–1.60
P	0.030
S	0.030
Si	0.60
Nb / V / Ti	Micro‑alloyed

🟧 Mechanical Properties (ASTM A656 Grade 50 – typical)

Property	Value
Yield Strength	≥ 345 MPa
Tensile Strength	450–620 MPa
Elongation	≥ 18%
Formability	Improved formability vs. conventional HSLA steels

(Higher grades have proportionally higher strength values.)

🟧 Physical Properties

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

🟧 Manufacturing Processes

• Hot rolling
• Normalizing (when specified)
• Pickling
• Leveling
• Slitting / Cutting to length
• Surface oiling

🟧 Primary Industry Usage

• Truck frames and chassis components
• Construction equipment
• Building structures
• Heavy machinery
• Fabricated structural parts
• Load‑bearing welded assemblies

🟧 Why Use ASTM A656 Structural Carbon Steel Coil

• High strength with excellent formability
• Suitable for heavy structural and fabricated components
• Good weldability for complex assemblies
• Available in multiple strength levels for design flexibility

🟧 Why Choose WelSteels

• Full range of HSLA structural steel coils
• Consistent dimensional accuracy
• Custom coil cutting and slitting
• SGS / BV inspection available
• Export‑grade seaworthy packaging
• Reliable delivery for global projects