Materials and Thicknesses

Premium metals sourced from certified suppliers. Select a material to see its available thicknesses and the design limits at each one.

Aluminium

Aluminium AlMg3 (EN AW-5754)

Aluminium with about 3 % magnesium, material number 3.3535. Not heat treatable, so it gets its strength from rolling rather than from ageing, and the magnesium is what keeps it corrosion resistant in weather and in salt water. It anodises well.

5 thicknesses

Steel

Steel DC01 (1.0330)

Cold rolled unalloyed sheet to EN 10130, material number 1.0330. Cold rolling buys an even surface and thickness tolerances that hot rolled cannot hold, and the low carbon leaves enough ductility for a tight bend. It is bare steel: it rusts, and the mill oil on it protects nothing past delivery.

4 thicknesses

Steel S355MC (1.0976)

Thermomechanically rolled fine grain structural steel to EN 10149-2, material number 1.0976. The strength comes out of the rolling schedule rather than out of the alloy, so it is about 50 % stronger than S235 while staying fully weldable and cold formable. Unalloyed, so it rusts.

4 thicknesses

Stainless Steel

Stainless Steel 1.4301 (X5CrNi18-10)

Austenitic chromium nickel stainless to EN 10088-2, material number 1.4301, elsewhere AISI 304 or V2A. The chromium builds a passive layer that reforms in air on its own, which is the difference between stainless and coated, and the nickel keeps the structure austenitic and therefore very ductile.

6 thicknesses

High Carbon Steel

High Carbon Steel C75S +QT (1.1248)

Spring steel strip to EN 10132-4, material number 1.1248, delivered hardened and tempered (+QT). At around 0.75 % carbon it is three to four times the strength of structural steel and springs back instead of taking a set. Nothing in it resists corrosion, and at this carbon level it cannot be welded.

5 thicknesses