Surface finishes plus
Extended testing procedures at Rittal
Our extended testing procedure – Surface Protection Plus – tests materials at system level. In other words, the entire product, rather than just the individual part, is subjected to the testing procedure in the respective application spectrum.
- Geometric influences are also taken into account
- Testing with real test media
- Optimum material selection and combination
- Test procedure for corrosion protection (component-oriented and design-focused)
Dependency of corrosion on the local ambient conditions, e.g. corrosion rates with low-alloy steel:
Average corrosion rates in µm/annum | |||
North Sea | Mediterranean | Persian Gulf | |
Atmosphere | 50-70 | ||
Spray water zone | 140 | 140 | 190 |
Alternating immersion zone | 80 | 50 | 50 |
Low water zone | 210 | 160 | 130 |
Permanent immersion zone | 30 | 40 | 40 |
Sea bed | 20 |
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Test procedure for corrosion protection
- according to standard regulations such as EN, IEC, ASTM
Pros: Identical scale, comparable
Cons: Purely component-based (e.g. sheet metals only)
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Extended test procedure (Rittal)
- Testing at system level (complete product instead of just individual parts)
- Geometric influences are also tested (edges, gaps, ...)
- Testing with real test media
Pros: Practical, optimum choice and combination of materials for the respective application spectrum (coated steel, stainless steel, aluminium, zinc)
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Constructive corrosion protection
- Avoidance and sealing of gaps
- Suitable material pairings
- Organic coating wherever possible