Last Updated: March 2026
Sheet Metal Fabrication Australia — Custom Parts, Prototypes & Production
Rapid Manufacturing provides custom sheet metal fabrication across Australia, from single prototype brackets to production runs of 1,000+ enclosures. We source from ISO 9001:2015 certified fabrication suppliers covering laser cutting, press brake bending, MIG/TIG welding, and finishing. Free DFM analysis with every quote, pricing within 2 business days, no minimum order.
Sheet Metal Fabrication Capabilities
Laser Cutting
Fibre laser cutting for sheet up to 25mm steel, 20mm stainless, 15mm aluminium. Cut tolerance ±0.1mm. Suitable for complex flat patterns and high-volume blanks.
Press Brake Bending
CNC press brake forming for precise bend angles and radii. Accuracy to ±0.5° on bend angle. Standard and speciality tooling available.
Punching
CNC turret punching for repetitive hole patterns, louvres, and formed features. More economical than laser for simple perforated patterns at high volume.
MIG / TIG Welding
Structural MIG welding and precision TIG welding for stainless steel and aluminium. Weld inspection and pressure testing available.
Hardware Insertion
PEM nut, stud, and standoff insertion by press for threaded hardware in thin sheet where welding is not practical.
Roll Forming
Continuous roll forming for profiles and cylindrical shapes in long lengths, suitable for channels, angles, and custom profiles.
Sheet Metal Materials
| Material | Thickness Range | Typical Uses | Notes |
|---|---|---|---|
| Mild Steel (CR/HR) | 0.8–12mm | Brackets, frames, enclosures, general fabrication | Most economical. Requires surface treatment to prevent rust. |
| Aluminium 5052-H32 | 0.8–6.0mm | Marine, electrical, decorative, lightweight structures | Best formability of common aluminiums. Excellent corrosion resistance. |
| Aluminium 6061-T6 | 1.0–6.0mm | Structural components, machined features | Higher strength but lower formability than 5052. Larger bend radii required. |
| Stainless Steel 304 | 0.8–6.0mm | Food equipment, architectural, general | Good corrosion resistance. Work-hardens during bending. |
| Stainless Steel 316 | 0.8–4.0mm | Marine, medical, chemical, food grade | Superior chloride resistance. More expensive than 304. |
| Copper | 0.5–3.0mm | Electrical busbars, heat sinks, decorative | Excellent conductivity. Higher material cost. |
Sheet Metal Design Tips (DFM)
- Minimum bend radius = 1× material thickness
For aluminium 5052 and mild steel. For 6061-T6 or stainless, use 1.5–2× thickness. Under-specified radii cause cracking.
- Keep holes at least 1.5× thickness from edges
Holes too close to edges or bends deform during forming. The minimum hole-to-edge distance is 1.5× sheet thickness; minimum hole-to-bend distance is 3× sheet thickness.
- Avoid very small holes in thick material
Minimum hole diameter should exceed the sheet thickness for laser cutting. Smaller holes require EDM or drilling as a secondary operation.
- Design bends parallel to grain direction
Bending parallel to the rolling direction (grain) allows tighter minimum radii. Bending across the grain requires larger radii to avoid cracking, particularly in higher-strength alloys.
- Add relief notches at bend intersections
Where two bends meet at a corner, add a small notch (1–2× thickness) to prevent material from tearing or forming an unclean corner.
Available Surface Finishes
Get Your Sheet Metal Parts Quoted
Submit a flat pattern DXF and 3D STEP file for a quote within 2 business days. Free DFM analysis included.
Request a QuoteFrequently Asked Questions
What is the minimum order quantity for custom sheet metal fabrication?
Rapid Manufacturing has no minimum order quantity for sheet metal parts. We fabricate single prototype brackets and enclosures just as readily as production runs of 1,000+ parts.
What materials can be used for sheet metal fabrication?
Common sheet metal materials include: mild steel (1.0–6.0mm), stainless steel 304 and 316 (0.8–4.0mm), aluminium 5052 and 6061 (0.8–6.0mm), copper, and brass. Material choice depends on strength, corrosion resistance, weight, and finish requirements.
What is the minimum bend radius for sheet metal?
The minimum inside bend radius depends on material and thickness. As a general rule, the minimum inside radius should be at least equal to the material thickness (1t) for ductile materials like aluminium 5052, and 1.5–2t for harder materials like 6061-T6 or stainless steel. Specifying radii smaller than the minimum causes cracking at the bend.
What sheet metal fabrication processes does Rapid Manufacturing offer?
Rapid Manufacturing offers laser cutting, press brake bending, punching, roll forming, MIG/TIG welding, hardware insertion (PEM nuts, studs), and finishing (powder coating, anodising, bead blasting, zinc plating) through our supplier network.
How do I submit a sheet metal fabrication design for quoting?
Submit a flat pattern DXF or DWG file for cutting, plus a 3D STEP file showing the folded/final geometry. Include a PDF drawing with bend specifications (bend angle, inside radius, bend direction). Specifying these clearly avoids delays and ensures accurate pricing.
Can sheet metal parts be powder coated?
Yes. Rapid Manufacturing offers powder coating in a wide range of RAL colours. Powder coating provides a durable, corrosion-resistant finish on steel and aluminium sheet metal parts. Specify colour (RAL code), gloss level, and any masking requirements.
What tolerances are achievable with laser cut sheet metal?
Laser cutting achieves cut tolerances of ±0.1mm on most features for sheet up to 6mm thick. Formed dimensions (after bending) are typically ±0.5mm for standard press brake work, and ±0.2mm with precision bending tooling.