Hot-Rolled Steel Coils
Hot-Rolled Steel Coils
Hot-rolled steel coils (HRC) are produced by heating steel slabs above their recrystallization temperature (typically over 1,700°F) and passing them through rollers to achieve the desired thickness and shape. The result is a versatile, strong, and cost-effective steel product with a characteristic scaly or blackish-blue surface. After cooling, the coils are often pickled and oiled to remove scale and enhance corrosion resistance.
Key Features:
- Excellent weldability and formability
- High strength and durability
- Cost-effective solution for structural applications
- Available in a wide range of thicknesses and widths
Hot-Rolled Steel Coil Specifications
- Thickness: 1.2mm–25.4mm
- Width: Up to 2,150mm (widest in India at select facilities)
- Coil Weight: Up to 36 tons
- Grades: Carbon steel (e.g., ASTM A1011), stainless steel, HSLA (e.g., X60–X100), dual-phase steel, and more.
- Surface Treatments: Mill edge, trimmed edge, pickled and oiled, or non-pickled.
- Standards: Conforms to AS/NZS 1594:2002, ASTM, and other international standards.
- Special Features: High weldability, crack resistance (including at negative temperatures), and hydrogen sulphide resistance (HIC, SSC) for demanding applications.
ASTM A36/A36M
ASTM A1011/A1011M
ASTM A568
ASTM A513
ASTM A786
EN 10111
EN 10028
EN 10025
EN 10149
Manufacturing Process
- Heating: Steel slabs or billets are heated above 1,700°F to make them malleable.
- Rolling: The heated steel is passed through roughing and finishing mills to reduce thickness and form long, thin sheets.
- Cooling: Controlled cooling ensures optimal mechanical properties, such as ductility and toughness.
- Coiling: The steel is wound into coils for easy storage and transportation.
- Optional Finishing: Pickling removes surface scale, and oiling protects against corrosion.
Application
- Structural beams and columns
- Frames for trucks and machinery
- Storage tanks and containers
- Rail tracks and shipbuilding components