GC PASS 600
Transparent protection on zinc-iron layers for rack and barrel goods
A wide range of passivations meeting the most diverse requirements. With the GC PASS passivation systems, silver, transparent, blue, yellow or black coloured coatings of zinc or zinc alloys can be obtained according to the desired finish or the required corrosion resistance.
GC PASS 600 is a chromium (VI)-free transparent passivation on electroplated zinc-iron layers with an iron content of between 0.5 and 0.7 %.
The transparent, slightly iridescent surfaces ensure high corrosion protection. With subsequent sealing, using GC TOP 120 or GC TOP 471, for example, a perfect homogeneous appearance is achieved.
GC PASS 600 can be used with rack and barrel systems and is easily analysed.
GC PASS 650
Black protection on zinc-iron layers for barrel goods
GC PASS 650 is a chromium (VI)-free black passivation on electroplated zinc-iron layers with an iron content of between 0.5 and 0.7 %.
The cobalt-free passivation for high corrosion protection produces black, slightly iridescent surfaces. With subsequent sealing using GC TOP, a homogeneous black appearance is achieved.
GC PASS 650 is exclusively formulated for barrel plating applications and is easily analyzed.
GC PASS 670
Black protection on zinc-iron layers for rack goods
GC PASS 670 is a chromium (VI)-free black passivation on electroplated zinc-iron layers with an iron content of between 0.5 and 0.7 %.
The cobalt-containing passivation for high corrosion protection produces black, slightly iridescent surfaces. With subsequent sealing, using GC TOP for example, a homogeneous black appearance is achieved.
GC PASS 670 is exclusively formulated for rack plating applications and is easily analyzed.
Coating parameters
| Product | Coating in l/100 l | Coating in kg /100 l | Ph range from-to | T in °C | t in s | Max. metal impurity content in g/L |
| GC PASS 600 part 1 | 12 -17 | 1.9 -2.2 | 40 -55 | 40 -60 | Zn: 15, Fe: 0.15 | |
| GC PASS 600 part 2 | 0.2 -0.4 | |||||
| GC PASS 650 part 1 | 12 -18 | 1.8 -2.2 | 20 -30 | 40 -90 | Zn: 15, Fe: 0.15 | |
| GC PASS 650 part 2 | 0.7 -1.0 | |||||
| GC PASS 670 part 1 | 4 -6 | 1.8 -2.2 | 30 -40 | 45 -75 | Zn: 15, Fe: 0.15 | |
| GC PASS 670 part 2 | 1 -4 |
