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1018 Cold Rolled Steel Plate
1018 Cold Rolled Steel Plate
The 1018 cold-rolled steel sheet is made from high-quality carbon steel through a cold rolling process. It features a smooth, flat surface and precise dimensions, offering excellent weldability, machinability, and mechanical properties. Compared to hot-rolled steel, its surface is more uniform, and the edges are cleaner, which enhances adhesion in subsequent coating and plating applications. This material is widely used in machinery parts, structural components, automotive parts, household appliances, and more. The standard specification is ASTM A1018, with A36 and A108 grades available upon request.
Product Specifications
| Category | Details/Typical Range |
| Chemical Composition | |
| Carbon(C) | 0.10%-0.15% |
| Manganese(Mn) | 0.30%-0.60% |
| Phosphorus(P) | ≤0.040% |
| Sulfur(S) | ≤0.050% |
| Mechanical Properties | |
| Yield Strength | 170-350 MPa |
| Tensile Strength | 270-410 MPa |
| Elongation | 28%-32% |
| Hardness(Brinell or HRB) | Typically≤70 |
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More Details
Comparison Table: 1018 vs. 1045 vs. A36 Steel Plates
| Property | 1018 Cold Rolled | 1045 Cold Rolled | A36 Hot Rolled |
| Carbon Content | 0.14–0.20 % → Low carbon = better weldability & ductility | ≈ 0.45 % → High carbon = high strength, lower formability | ≈ 0.26 % → Balanced for structural applications |
| Tensile Strength | 440–540 MPa (≈ 64–78 ksi) → Solid balance of strength & machinability | 620–680 MPa (≈ 90–99 ksi) → High load capacity | ≈ 400 MPa (≈ 58 ksi) → Suitable for light structural use |
| Yield Strength | 370–420 MPa (≈ 54–61 ksi) → Resists moderate loads | 530–580 MPa (≈ 77–84 ksi) → High stress resistance | ≈ 250 MPa (≈ 36 ksi) → Lower deformation threshold |
| Elongation | ≥ 15 % → Good formability | 12–18 % → Acceptable ductility | ≈ 20 % → Highest ductility, but lower strength |
| Brinell Hardness | ≈ 126 HB → Easy to machine & finish | ≈ 179 HB → High wear resistance | Varies |
| Machinability | Excellent (~70–78%) → Ideal for tight-tolerance parts | Moderate | Fair |
| Weldability | Excellent – standard welding, no preheat/postheat | Limited – may require heat treatment | Good |
Applications of 1018 Steel Plate
- Precision Components (shafts, pins, hinges, axles)
With a smooth, oil-protected surface and tight tolerances, 1018 is perfect for manufacturing high-precision parts.
- Gears, Sprockets, Ratchets
Suitable for surface carburizing, offering durability on the surface and toughness in the core.
- Mounting Plates, Spacers, Fixtures
Its formability supports bending, stamping, and fabrication tasks required in jigs and mounting assemblies.
- Fasteners, Bolts, Studs
Excellent machinability (≈70% machinability rating) makes 1018 highly efficient for threaded parts and fastener production.
- Cold-Formed Structural Parts
High ductility and consistency make it well-suited for sheet and plate fabrication in structural assemblies.
- Vehicle Components
Widely used for axles, shafts, and other parts in automotive and heavy truck applications.
