SAF Painting Guidelines AAMA Specifications

AAMA specifications

Deliver to 8370 Highway 78, Villa Rica, Georgia 30180

SAF is an approved applicator of PVDF (KYNAR 500 or HYLAR 5000) coatings.  Most importantly we use a chrome phosphate based pretreatment. For exterior use, Southern Aluminum Finishing recommends the following 70% PVDF finishes for architectural use:

Comparison of Coatings Specifications

Test Parameter

AAMA 2603

AAMA 2604

AAMA 2605 and ASCA 96

PRETREATMENT REQUIREMENTS

Metal Preparation and Pretreatment

Multi-stage cleaning and pretreatment Multi-stage cleaning and pretreatment Multi-stage cleaning and pretreatment
Pretreatment Type Chemical conversion coating Chrome or non-chrome chemical conversion coating Amorphous chromium phosphate or amorphous chromate treatment
Pretreatment Coating Weight none specified Chrome=30 mg/ft? minimum; non-chrome per supplier’s specification Chrome=40 mg/ft? minimum
PAINT FILM REQUIREMENTS
Dry Film Thickness 0.8 mils minimum 1.2 mils (for multicoat, 1.0 mil topcoat minimum & 0.3 +/- 0.1 mil primer) 1.2 mils (for multicoat, 1.0 mil topcoat minimum & 0.3 +/- 0.1 mil primer)

(None specified under ASCA 96)

Sealant Compatibility meets AAMA 800 meets AAMA 800 meets AAMA 800

Specular Gloss

+/- 5 units of specification (high=80+, medium=20-79, low?19)

+/- 5 units of specification (high=80+, medium=20-79, low?19) +/- 5 units of specification (high=80+, medium=20-79, low?19)
Dry Film Hardness H minimum F minimum F minimum

ADHESION REQUIREMENTS

Dry Adhesion 0% failure (no loss) 0% failure (no loss) 0% failure (no loss)
Wet Adhesion 0% failure (no loss) 0% failure (no loss) 0% failure (no loss)
Boiling Water Adhesion none specified 0% failure (no loss) 0% failure (no loss)
Impact Resistance no removal of film from substrate no removal of film from substrate no removal of film from substrate
Abrasion Resistance none specified abrasion coefficient value = 20 minimum abrasion coefficient value = 40 minimum
CHEMICAL RESISTANCE REQUIREMENTS
Muriatic Resistance 15-minute exposure: no blistering or visual change 15-minute exposure: no blistering or visual change 15-minute exposure: no blistering or visual change
Mortar Resistance 24-hour exposure: no loss of film adhesion or visual change 24-hour exposure: no loss of film adhesion or visual change 24-hour exposure: no loss of film adhesion or visual change
Nitric Acid Resistance none specified 30-minute exposure: 5 Delta E (Hunter) maximum color change 30-minute exposure: 5 Delta E (Hunter) maximum color change
Detergent Resistance 72-hour exposure: no loss of adhesion, no blistering, no significant visual change 72-hour exposure: no loss of adhesion, no blistering, no significant visual change 72-hour exposure: no loss of adhesion, no blistering, no significant visual change
Window Cleaner Resistance none specified 24-hour exposure: no blistering or appearance change 24-hour exposure: no blistering or appearance change

(None specified under ASCA 96)

 CORROSION RESISTANCE REQUIREMENTS

Humidity Resistance 1,500 hours: no more than “few” blisters size 8, figure no. 4, ASTM D 714 3,000 hours: no more than “few” blisters size 8, figure no. 4, ASTM D 714 4,000 hours: no more than “few” blisters size 8, figure no. 4, ASTM D 714
Salt Spray Resistance 1,500 hours of salt solution: minimum rating of 7 on scribe or cut edges; minimum blister rating of 8 in the field

(ASTM D 1654)

3,000 hours of salt solution: minimum rating of 7 on scribe or cut edges; minimum blister rating of 8 in the field

(ASTM D 1654)

4,000 hours of salt solution: minimum rating of 7 on scribe or cut edges; minimum blister rating of 8 in the field

(ASTM D 1654)

WEATHERING RESISTANCE REQUIREMENTS
Accelerated Exposure 1,000 hours in Atlas Type “XW” weatherometer: no adhesion loss; slight chalking or color change none specified none specified
Outdoor Exposure 1 year South Florida, 45m south: no adhesion loss; slight chalking or fading 5 years South Florida, 45m south: 5 Delta E (Hunter) maximum color change; chalking < 8 (ASTM

D 4214); gloss retention > 30%; erosion resistance < 10% film loss

10 years South Florida, 45m south:

 5 Delta E (Hunter) maximum color change; chalking < 8 (ASTM

D 4214), gloss retention > 50%; erosion resistance < 10% film loss

This table is a cursory comparison of some of the common elements of the referenced specifications.  Far greater detail can be found in the specifications themselves.  For copies of the specifications, please contact the issuing organizations.