Comparison of Architectural Specifications

Here is a comparison of standards and specifications used for specifying powder coatings and comparing other types of product finishes.

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	GSB 3/99	Qualicoat Class 1	Qualicoat Class 2	AAMA 2603-98	AAMA 2604-98	AAMA 2605-98
Coating Material	Powder Coating	Organic Coatings	Organic Coatings	Pigmented Organic Coating	High Performance Organic Coatings	Superior Performing Coatings
Colour	RAL 3016, 8014, 9001	3 Colors selected by committee	3 Colors selected by committee	Consistent with established colour range	Consistent with established colour range	Consistent with established colour range
Substrate	Al Mg 1 F13 mill finish 70 x 140 x 0.8 mm	Al Mg 1 AA 5005 H24/H14 70 x 140 x 0.8 – 1 mm	Al Mg 1 AA 5005 H24/H14 70 x 140 x 0.8 – 1 mm	Al 76 x 152 mm 3 x 6 inch	Al 76 x 152 mm 3 x 6 inch	Al 76 x 152 mm 3 x 6 inch
Metal Treatment	DIN 50939 yellow chromated ( Cr6+ ) Non-chromes also allowed, subject to meeting spec	DIN 50939 yellow chromated Non-chromes also allowed, subject to meeting spec	DIN 50939 yellow chromated Non-chromes also allowed, subject to meeting spec	To comply with performance requirements.	ASTM D 5723 Chromated (>323 mg/m2) Non-chromes also allowed, subject to meeting spec	ASTM D 1730 Amorphous Chromium Phosphate Treatment (>430 mg/m2). Non-Chromes not permitted.
Film Thickness	50 – 80 µm ISO 2360	min. 60 µm for powder coatings ISO 2360	min. 60 µm for powder coatings ISO 2360	Min. 0.8 mil (20µm)	Min. 1.2 mil (30µm)	Min. 1.2 mil (30µm)
Gloss (60°)	DIN 67530/ISO 2813 ± 5 at < 40% ± 10 at < 40%	DIN 67530/ISO 2813 ± 5 at 0 – 30% ± 7 at 31 – 70% ± 10 at 71 – 100%	DIN 67530/ISO 2813 ± 5 at 0 – 30% ± 7 at 31 – 70% ± 10 at 71 – 100%	ASTM D 523/ 60° ± 5 units	ASTM D 523/ 60° ± 5 units	ASTM D 523/ 60° ± 5 units
Film Hardness	DIN 53153/ISO 2815 min. 80	ISO 2815 min. 80	ISO 2815 min. 80	ASTM D 3363 Pencil grade H No rupture of film	ASTM D 3363 Pencil grade F No rupture of film	ASTM D 3363 Pencil grade F No rupture of film
Film Adhesion	DIN 53151/ISO 2409 6 parallel of 1 mm min. Gt-0	ISO 2409 6 parallel of 1 mm/min Gt-0 Scotch 610	ISO 2409 6 parallel of 1 mm/min Gt-0 Scotch 610	ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0
Wet Adhesion	N.A	N.A	N.A	24 hours at 38C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	24 hours at 38C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	24 hours at 38C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0
Boiling Water Adhesion	N.A	N.A	N.A	20 mins at 100C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	20 mins at 100C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0	20 mins at 100C ASTM D 3359 11 parallel of 1mm Permacel 99 min. Gt-0
Cupping Test (Erichsen pen.)	ISO 1520 min. 5 mm [min. 3 mm]	ISO 1520 min. 5 mm no signs of cracking or detachment	ISO 1520 Min. 5 mm No signs of detachment	N.A.	N.A.	N.A.
Bend Test	ISO 1519/DIN 53152 min. 5 mm [min. 12 mm]	ISO 1519 5 or 8 mm mandrel no signs of cracking or detachment	ISO 1520 5 or 8 mm mandrel No signs of detachment	N.A.	N.A.	N.A.
Impact Test (Reverse)	ASTM D 2794 (40 – 50 µm) min. 20 inlb [min. 10 inlb]	ASTM D 2794 min. 2.5 Nm = 22 inlb no signs of cracking or detachment	ASTM D 2794 min. 2.5 Nm = 22 inlb No signs of detachment	ASTM D 2794/direct Deformation min. 3 mm No removal of coating	ASTM D 2794/direct Deformation min. 3 mm No removal of coating	ASTM D 2794/direct Deformation min. 3 mm No removal of coating
Scratch resistance.	N.A.	N.A.	N.A.	N.A.
Abrasion Resistance	N.A	N.A	N.A	N.A	ASTM D968 20 min	ASTM D968 20 min
Mortar-Test	ASTM C 207 STM D 3260 24 h at 40°/95% no residue	ASTM C 207 ASTM D 3260 24 h at 40°/95% no residue	ASTM C 207 ASTM D 3260 24 h at 40°/95% no residue	ASTM C 207 24h at 40°/100% no change, no loss of adhesion	ASTM C 207 24h at 40°/100% no change, no loss of adhesion	ASTM C 207 24h at 40°/100% no change, no loss of adhesion
Muriatic acid (HCL 37%)	N.A.	N.A.	N.A.	10 Vol. % HCL (37%) 15 min./20°C/watch-glass no blist., no change	10 Vol. % HCL (37%) 15 min./20°C/watch-glass no blist., no change	10 Vol. % HCL (37%) 15 min./20°C/watch-glass no blist., no change
Nitric acid	N.A.	N.A.	N.A.	N.A.	70% Nitric Acid 30 min No more than 5 Hunter Uints colour change	70% Nitric Acid 30 min No more than 5 Hunter Uints colour change
Detergent resistance.	N.A.	N.A.	N.A.	3 wt%, 72 h/38°C no loss of adh	3 wt%, 72 h/38°C no loss of adh	3 wt%, 72 h/38°C no loss of adh
Humidity resistance.	DIN 50017 KK / ISO 6270 1000 h/40°/100% max. 1 mm creep. No blistering	DIN 50017 KK 1000 h/40°/100% max. 1 mm creepage at cross cut no blistering	DIN 50017 KK 1000 h/40°/100% max. 1 mm creepage at cross cut no blistering	ASTM D 4585 1500 h/38°/100% Few /No. blisters (No. 4 ASTM D-714	ASTM D 4585 3000 h/38°/100% Few /No. blisters (No. 4 ASTM D-714	ASTM D 4585 4000 h/38°/100% Few /No. blisters (No. 4 ASTM D-714
Salt spray resistance.		N.A.	N.A.	ASTM B 117 1500 h/5% Na. Cl few No. 8 blisters No removal of film	ASTM B 117 3000 h/5% Na. Cl few No. 8 blisters No removal of film	ASTM B 117 3000 h/5% Na. Cl few No. 8 blisters No removal of film
Acetic salt spray	ISO 9227/DIN50021 ESS 500 h / 35°C no blistering max. 1 mm creep.	ISO 9227 1000 h/35° max. 4 mm creep.	ISO 9227 1000 h/35° max. 4 mm creep.	N.A.	N.A.	N.A.
Sulfuric test (Kesternich)	DIN 50018 SFW 0.2 S/ISO 3231 30 cycl. max. 1 mm creep. no blistering	ISO 3231 0.2 S 24 cycl. max. 1 mm creep. at cross cut no colour change.	ISO 3231 0.2 S 24 cycl. max. 1 mm creep. at cross cut no colour change.	N.A.	N.A.	N.A.
Boiling water (permeability)	2 h dist. Water no blistering	2 h dist. H2O or 1 h press. cooker no blistering a few colour change	2 h dist. H2O or 1 h press. cooker no blistering a few colour change	N.A.	N.A.	N.A.
Machu test (accelerated corrosion)	N.A.	NaCl 50g/l CH3COOH 10ml/L pH 3.2 H202 5ml/L 48 h/37° max. 0.5 mm creep. at cross cut	NaCl 50g/l CH3COOH 10ml/L pH 3.2 H202 5ml/L 48 h/37° max. 0.5 mm creep. at cross cut	N.A.	N.A.	N.A.
Solvent Test	MEK 2 min. Hardness: > 70 No surface change	XYLENE 30 sec. slight loss of gloss no percept. Change	XYLENE 30 sec. slight loss of gloss no percept. Change	N.A.	N.A.	N.A.
Sawing, milling, drilling	the coating must not crack or chip when sharp tools are used	the coating must not crack or chip when sharp tools are used	the coating must not crack or chip when sharp tools are used	N.A.	N.A.	N.A.
Storage stability	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.
Window cleaner	N.A.	N.A.	N.A.	N.A.	10 drops 24 hours at 20C No blistering or change in appearance. No removal of film	10 drops 24 hours at 20C No blistering or change in appearance. No removal of film
Natural weathering	Florida/1 year 5° south method B washed colour: ISO 7724/3 DIN 6174 ∆L = 1 – 7 gloss retention: > 50% (60°)	Florida/1 year 5° South/April method B washed colour: DIN 5033 DIN 6174 ∆E = 2 – 6 dependant on color gloss retention: ≥ 50% (60°)	Florida/3 year 5° South/April method B washed colour: DIN 5033 DIN 6174 ∆E = 2 – 6 dependant on color gloss retention: ≥ 1st year: 90% 2nd year: 75% 3rd year: 50%	Florida/1 year 45° South/wash A no checking, crazing or loss of adhesion. Slight chalking and fading.	Florida/5 year 45° South/wash A Color change <5 Hunter Units ASTM D4214 Chalking < No. 8 Gloss retention min 30% Erosion >10% film loss	Florida/10 year 45° South/wash A Color change <5 Hunter Units ASTM D4214 Chalking < No. 8 Gloss retention min 50% Erosion >10% film loss
Artificial weathering	ASTM G 53-88/DIN 53 384 QUV-B 313 (0.67 W/m2 ) 4 h UV at 50°C 4 h cond. at 40°C 200 h gloss : ≥ 50% ( 60° ) color: DIN 54004 (min.7)	ISO 11341 (CPS+) BP = 65°C, 18/102 1000 h gloss retention:≥ 50% (60°) colour: ISO 7724/3 ∆E = 2 – 6 dependant on color	ISO 11341 (CPS+) BP = 65°C, 18/102 1000 h gloss retention:≥ 90% (60°) colour: ISO 7724/3 ∆E = 2 – 6 dependant on color	ASTM D 822 Atlas WOM (XW) BP = 65°C, 18/102 1000 h only slight gloss and colour change plus slight water staining	N.A	N.a