Zinc Coating Weight Calculator
Galvanizing: g/m² ↔ µm ↔ service-life estimate.
Zinc dies linearly, so galvanizing life is exactly proportional to thickness — double the dip, double the decades. Z275 sheet (~20 µm/side) lasts ~13 urban years; 85 µm HDG, 50+.
Formula
Zinc Coating Weight Calculator is a free zinc coating weight for design engineers, metallurgists and QA inspectors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Zinc Coating Weight Calculator
Galvanizing: g/m² ↔ µm ↔ service-life estimate. The calculation implements µm = g/m² ÷ 7.14; life = thickness/zinc-loss-rate (ISO 1461/9223; AGA service-life charts). Zinc dies linearly, so galvanizing life is exactly proportional to thickness — double the dip, double the decades. Z275 sheet (~20 µm/side) lasts ~13 urban years; 85 µm HDG, 50+.
How to use Zinc Coating Weight Calculator
- 1Enter Coating mass (single side) in g/m² (Z275 sheet = 275 TOTAL both sides; HDG structural 600+).
- 2Enter Environment corrosivity (1 rural (0.5 µm/yr) · 2 urban (1.5) · 3 industrial (3) · 4 coastal (5)).
- 3Read Coating thickness, Est. life to 5% rust instantly — no submit button needed.
Why use Zinc Coating Weight Calculator?
- ✓Implements the standard formula — µm = g/m² ÷ 7.14; life = thickness/zinc-loss-rate
- ✓Reference cited on-page: ISO 1461/9223; AGA service-life charts
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Zinc Coating Weight Calculator use?+
It computes µm = g/m² ÷ 7.14; life = thickness/zinc-loss-rate, per ISO 1461/9223; AGA service-life charts. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Zinc dies linearly, so galvanizing life is exactly proportional to thickness — double the dip, double the decades. Z275 sheet (~20 µm/side) lasts ~13 urban years; 85 µm HDG, 50+.
Where do the material property defaults come from?+
Defaults are standard handbook values (ASM, manufacturer datasheets, the cited standard). Always substitute certified values from your material's test certificate for critical work.
Is the Zinc Coating Weight Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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