GB-60 is a uniform, non-directional mechanical finish with a satin aesthetic and ambient reflectivity. It is available as a flat sheet good or for specification within a Zahner project.
GB-60’s diffuse finish, nearly crystalline in appearance, offers a soft shine — and a velvety alternative to highly reflective stainless steel finishes.
GB-60 appears bright and deep in full sunlight. On cloudy days, it takes on the appearance of pewter. Low sun makes it glow purple and reddish silver.
To achieve this pleasing diffusion of light without mottling, the metal surface is blasted with minute beads before further refinement.
During the early 1990s, Kohn Pedersen Fox (KPF) architects required a contemporary non-directional finish on stainless steel with a gentle matte glow. As no metal manufacturers offered such a finish, KPF Associates worked with Zahner to develop GB-60 as an in-house product.
Selective polishing is a custom finish option that can create distinctive patterns on GB-60 metals through special resists. The areas of the surface that are left exposed receive textured polishing through blasting or brushing techniques. This results in an alternating reflectivity for an eye-catching appearance.
See GB-60 in application through a selection of Zahner projects.
Use the visualizer to explore GB-60 in 3D environments.
Switch between Exterior & Interior views to see how the sun’s movement will play across a facade or how the Surface will appear from vantage points with a fixed light source.
Exterior
Interior| Recommended Application | Exterior and Interior |
| Base Metal (alloy) | stainless steel (304 or 316) |
| Standard Thicknesses | 14 ga 12 ga 11 ga |
| Approx. Decimal (mm) | .0785” (1.99) .1084“ (2.75) .1233” (3.13) |
| Approx. Weight (lbs/ft2) | 3.15 4.41 5.04 |
| COTE (in/in/°F) | 9.6 x 10-6 |
| Standard Sizes | 4′ x 8’ 4’ x 10’ 4’ x 12’ 5′ x 8’ 5’ x 10’ 5’ x 12’ |
Read our educational series on the history, manufacturing, and application of stainless steels and Zahner GB-60:
Angel Hair stainless steel is combined with flat seam and ZEPPS technology for the NASCAR Hall of Fame by Pei, Cobb, Freed architects.
PHOTO © A. ZAHNER COMPANY.Stainless steel claims a versatility and durability that few materials can match.
No other metal offers the vastness and variety of options of stainless steel.
An exploration of the advanced applications and immense possibilities of stainless steel.
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Read our educational series on the history, manufacturing, and application of stainless steels and Zahner GB-60:
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