Collection: Steel for Car Builders - Sheet, Tube & Fabrication Steel

Premium Steel for Car Builders - Sheet Metal, Tube & Fabrication Materials

Build with confidence using our comprehensive range of automotive-grade steel for custom car fabrication, chassis work, and performance builds. From cold-rolled sheet metal and hot-rolled plate to round tube, square tube, and precision-cut steel components, we stock everything Australian car builders, fabricators, and restorers need for professional results.

Sheet Metal & Plate Steel

• Cold-Rolled Sheet Steel: Smooth-finish sheet metal in various thicknesses (18ga, 16ga, 14ga, 12ga) for body panels, floor pans, and precision fabrication work
• Hot-Rolled Sheet Steel: Mill-finish plate steel for chassis components, mounting brackets, and structural fabrication where surface finish is less critical
• Galvanized Sheet Metal: Zinc-coated steel sheet for corrosion resistance in floor pans, inner panels, and rust repair applications
• Pre-Cut Sheet Sizes: Standard sizes and custom-cut sheets to minimize waste and simplify fabrication projects

Steel Tube & Round Bar

• Round Tube (CHS): Circular hollow section tube for roll cages, chassis bracing, suspension links, and custom fabrication in various diameters and wall thicknesses
• Square & Rectangular Tube (RHS/SHS): Structural hollow sections for chassis rails, subframes, mounting brackets, and fabrication jigs
• Solid Round Bar: Mild steel round bar for axles, pins, spacers, and machined components in common diameters
• DOM Tube: Drawn-over-mandrel seamless tube for high-strength applications like roll cages and suspension components

Fabrication Steel Components

• Flat Bar: Mild steel flat bar in various widths and thicknesses for brackets, mounting tabs, and reinforcement plates
• Angle Iron: Equal and unequal angle sections for chassis bracing, mounting frames, and structural support
• Channel Section: C-channel and U-channel steel for chassis rails, subframes, and heavy-duty mounting applications
• Steel Plate Offcuts: Pre-cut plate sections for gussets, mounting plates, and small fabrication projects

Steel Grades & Specifications

Mild Steel (1020/A36): Most common automotive fabrication steel. Easy to weld, form, and machine. Ideal for chassis work, brackets, body panels, and general fabrication. Requires paint or coating for corrosion protection.

High-Strength Steel (4130 Chromoly): Heat-treatable alloy steel with superior strength-to-weight ratio. Used in roll cages, suspension components, and race car chassis where weight savings and strength are critical. Requires specialized welding techniques.

Galvanized Steel: Zinc-coated mild steel with excellent corrosion resistance. Perfect for floor pans, inner body panels, and areas exposed to moisture. Can be welded with proper technique and ventilation.

Common Car Building Applications

• Custom chassis fabrication and frame rails
• Roll cage and safety equipment construction
• Body panel repair and replacement
• Floor pan and firewall fabrication
• Suspension link and control arm fabrication
• Engine and transmission mounting brackets
• Fuel tank and battery box construction
• Custom exhaust hangers and mounting tabs
• Fabrication jigs and assembly fixtures

Related Fabrication Components

Complete your steel fabrication project with our range of complementary components:

• Weld-On Tabs: Laser-cut steel tabs for mounting and fabrication work
• Round Weld Bungs: Steel weld bungs for sensor and fitting installations
• 989 Series Weld Bungs: Universal weld-in fittings for fluid systems
• All Fabrication Parts: Complete range of exhaust, intake, and chassis fabrication components
• Stainless Steel Tube: Corrosion-resistant tubing for exhaust and exposed applications

Steel Fabrication Tips

Material Selection: Choose cold-rolled sheet for visible body panels and precision work. Use hot-rolled plate for chassis components and structural applications. Select tube wall thickness based on load requirements—thicker walls for high-stress components.

Welding Preparation: Clean all mill scale, rust, and contamination before welding. Cold-rolled steel welds cleaner than hot-rolled. Use proper joint preparation and fit-up for strong, consistent welds.

Corrosion Protection: All mild steel requires coating or paint for corrosion protection. Prime and paint fabricated components before installation. Consider galvanized steel for areas exposed to moisture.

Cutting & Forming: Use plasma cutters, angle grinders, or band saws for cutting. Sheet metal can be formed with brakes, rollers, and English wheels. Tube requires notching for proper fit-up in chassis work.

Why Choose Quality Automotive Steel?

Using proper automotive-grade steel ensures your fabrication work meets safety standards and performs reliably under stress. Our steel is sourced from reputable Australian suppliers and meets relevant standards for automotive fabrication. Whether you're building a street car, race car, or restoration project, quality steel provides the foundation for safe, durable construction.

Australian Stock - Expert Fabrication Support

Based in Perth, Western Australia, we stock a comprehensive range of steel for car builders with fast shipping across Australia. Our team has hands-on fabrication experience and can help you select the correct material type, thickness, and size for your specific application. Whether you're building a full custom chassis or fabricating mounting brackets, we'll ensure you get the right steel for the job.