A2 Stainless Steel Round Blanks & Discs — Precision Laser-Cut for Fabrication, Craft & Engineering
When a project demands a clean, burr-free circle of metal that fits exactly where it needs to go, off-the-shelf sheet rarely cuts it — literally. Hobbyists, fabricators, and engineers who need repeatable accuracy without the setup cost of in-house laser cutting rely on ready-to-use round blanks that arrive flat, true, and ready to work with.
These A2 stainless steel round blanks are laser-cut from solid sheet stock. A2 (304-grade equivalent) stainless steel offers a balanced combination of corrosion resistance, weldability, and machinability. Discs are available in diameters from 50 mm (approx. 2 in) to 350 mm (approx. 13.8 in), with wall thicknesses ranging from 0.6 mm to 20 mm, sold in packs of 1, 2, or 4 pieces depending on the size selected.
Typical applications include gasket blanking, flange backing plates, decorative medallions for metalwork projects, base plates for welded assemblies, and circular templates for layout work. The laser-cut edge is consistent and square, reducing secondary finishing time for A2 stainless steel round disc fabrication tasks.
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Compatibility note: These blanks are unthreaded, undrilled flat discs. They are not pre-punched or tapped. Select the diameter and thickness that matches your application. For non-standard sizes, contact us to confirm.
✅ Key Features of These A2 Stainless Steel Round Blanks
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Laser-Cut Precision Edges
Each disc is cut using CNC laser equipment, producing a consistent, square edge with minimal kerf variation across the diameter — reducing the need for secondary deburring on most applications.
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A2 (304-Equivalent) Corrosion Resistance
A2 stainless steel resists oxidation in indoor, outdoor, and mildly corrosive environments. Suitable for use near moisture, mild acids, and food-contact applications where surface integrity matters.
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Wide Size Matrix
Diameters from 50 mm to 350 mm paired with thicknesses from 0.6 mm to 20 mm give you a broad selection matrix. Choose the exact combination from the variant options above.
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Flexible Pack Quantities
Available in packs of 1, 2, or 4 pieces. Smaller packs suit prototyping and one-off repairs; larger packs reduce per-unit cost for batch fabrication runs.
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Weldable & Machinable
A2 stainless accepts MIG, TIG, and spot welding without significant sensitisation at standard thicknesses. The flat, mill-finish surface machines cleanly for drilling, tapping, or turning operations.
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Flat, Stress-Relieved Stock
Blanks are cut from flat-rolled sheet, not formed or stamped, so they arrive without residual bow or camber — important for applications where surface flatness is a functional requirement.
📐 Technical Specifications — A2 Stainless Steel Round Blanks
| Material |
A2 Stainless Steel (304-grade equivalent) |
| Form |
Flat round disc / blank |
| Diameter Range |
50 mm – 350 mm (approx. 2 in – 13.8 in) |
| Thickness Range |
0.6 mm – 20 mm (approx. 0.024 in – 0.787 in) |
| Pack Quantity |
See variant options (1, 2, or 4 pcs) |
| Cut Method |
CNC Laser Cutting |
| Edge Condition |
Laser-cut, square edge; minor scale may be present on thicker gauges |
| Surface Finish |
Mill finish (2B equivalent); no polishing applied |
| Hole / Thread |
None — solid undrilled blank |
| Tolerance (diameter) |
Typically ±0.5 mm; contact us to confirm for critical fits |
| Weight per piece |
See variant options (varies by diameter and thickness) |
| Colour / Finish |
Stainless silver, mill finish |
❓ Frequently Asked Questions
How do I choose the right diameter and thickness for my project?
Start with the functional requirement: the diameter should match or slightly exceed the area you need to cover or fit into, and the thickness should be chosen based on the load, pressure, or rigidity the disc needs to provide. For gaskets and light covers, 0.6 mm – 1.5 mm is typical. For structural backing plates or flanges, 3 mm – 10 mm is more common. For heavy-duty load-bearing applications, 12 mm – 20 mm may be appropriate. If you are unsure, contact us with your application details.
Are these discs strong enough for structural or load-bearing use?
A2 stainless steel has a typical tensile strength of around 500–700 MPa and a yield strength of approximately 200–450 MPa depending on temper and thickness. For structural applications, the disc thickness and diameter both affect the load capacity. Thicker discs (10 mm and above) in smaller diameters are generally suitable for moderate structural use. For safety-critical applications, always verify with an engineer using the specific dimensions of the variant you select.
Will these blanks rust or corrode outdoors?
A2 stainless steel resists rust in most outdoor environments, including rain exposure and moderate humidity. It is not fully immune to corrosion in coastal (salt-spray) environments or when in prolonged contact with chlorides — in those conditions, A4 (316-grade) stainless would be a better choice. For standard outdoor use away from the coast, A2 performs well without additional coating.
Can I weld or drill these discs after purchase?
Yes. A2 stainless steel is weldable using TIG, MIG, or spot welding processes. Use a filler rod rated for 304 stainless (e.g., ER308L) for TIG welding. The material is also machinable — standard HSS or carbide drill bits work well with appropriate cutting fluid and moderate feed rates. Avoid overheating during drilling to prevent work-hardening of the surface.
Are the discs compatible with food-contact or hygienic applications?
A2 (304) stainless steel is widely used in food processing and catering equipment. The mill-finish surface on these blanks is not polished to a hygienic Ra value out of the box, so if your application requires a specific surface roughness for food-contact compliance, additional polishing or passivation may be needed. For general food-adjacent use (e.g., backing plates, frames), the material itself is appropriate.
What is the difference between ordering 1, 2, or 4 pieces?
The pack quantity option lets you order the number of identical discs you need in a single transaction. Larger packs (2 or 4 pcs) are available for smaller and mid-range sizes where multiple pieces are commonly needed for symmetrical assemblies, batch repairs, or prototyping. Larger diameters and thicker gauges are typically sold in packs of 1 due to weight and handling considerations. The pack quantity for each size combination is shown in the variant selector above.
🛒 Select your Size and Pack of Quantity above, then add to cart.
