Steel
Excellent - top quality steel which has been tested for structural strength and integrity.
- Grade A Structural quality steel: ASTM A 653-94
- Specification for steel, sheet, cold rolled, carbon structural: ASTM A 568
- Pencil hardness: ASTM D-3363-92a
- Formability: ASTM D-4145-90
Finish
- Specification for zinc coated steel: ASTM A 653-94
- Salt spray, 100 hours, 5% salt fog @ 21degrees C: ASTM B-117-85
- Specular gloss: ASTM D-523-89
- Abrasion resistance: ASTM D-968-93
- Chalk resistance: ASTM 4214-89
- Color resistance: ASTM D2244-93
Insulation:
- Tests for thermal transmission: ASTM C518 and ASTM C236
- Water penetration ASTM E331
- Humidity aging at 158 deg.F, 100% relative humidity 7 days: ASTM D 2126
- Heat aging at 200 deg.F, 14 days: ASTM D 2126
- Cold aging at -20 deg. F, 14 days: ASTM D 2126