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iRIS 220 / iRIS 320, V1.19 User Guide - 70
70
iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: iquest@iquest.co.nz
14 Appendix E – iRIS 320 Enclosure Material Spec
The iRIS 320 enclosure is milled from two solid blocks of 5083 aluminium alloy, which is then hard anodised.
This is the highest strength non heat-treatable alloy in general commercial use, possessing very high welded
strength and excellent corrosion resistance. It is used for many types of welded assemblies, such as tanks,
dump trucks, cryogenic applications and ship superstructures. It is not however recommended for use in
corrosive environments above 60°C.
Approximate Mechanical Properties:
Temper H32
Ultimate Tensile MPa 317
0.2% Proof Stress MPa 228
% min in elongation 50mm
(1.5mm thick specimen)
16
Ultimate Shear Stress (MPa) 179
Chemical Composition:
Aluminium 93.25%
Magnesium 4.0 - 4.9%
Iron 0.4%
Copper 0.1
Manganese 0.5 – 1.0%
Silicon 0.4%
Chromium 0.05 - 0.25%
Zinc 0.25%
Titanium 0.15%