.svg)
Surface Profile (Anchor Pattern)
The microscopic roughness created on a metal surface by abrasive blasting, measured in mils of peak-to-valley height. Adequate surface profile is required for the mechanical interlocking of applied coatings and is verified with a surface profile gauge.
Surface profile, also called anchor pattern, is the microscopic roughness created on a metal surface by abrasive blasting that enables mechanical interlocking between the substrate and applied coatings. This roughness is measured in peak-to-valley height (typically 1.5 to 4.0 mils) and is specified per SSPC-PA2 or similar standards that define acceptable profile ranges for different coating systems.
A surface with insufficient profile (too smooth) will not provide adequate mechanical anchoring, resulting in coating adhesion failure and premature peeling, while excessive profile wastes blasting abrasive and may be unnecessary for the coating system being applied. Specialized surface profile gauges with replica tapes allow quick field verification that your blast cleaning has achieved the required profile depth before application of primer or finish coats.
Engineering your blast process to achieve target surface profile is a critical success factor for long-term coating performance.
Price Your Project
Receive a free, custom quote for you project. Midwest Metal Fabrications can handle any job, small or large and is ISO 9001:2015 and AS9100 Certified.