Thickness Tolerance EN 10029
Four of the eight thickness ranges are in the reference book; the rest were plausibly completed from EN 10029 Table 1 and have not been checked against the standard text; Class B, C and D values are derived arithmetically from Class A.
Class A is the tightest tolerance and the one covered in the reference book.
Checks whether the measured value is within the limit deviations.
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Disclaimer: All calculation aids, formulas, tables and reference values on this page are for guidance only. They do not replace the applicable standard texts, the material and equipment manufacturers' data, a welding procedure specification, or a case-by-case technical review. Invictix Systems gives no warranty as to accuracy, completeness or currency and accepts no liability for damages arising from their use. Only the applicable standards, manufacturer data and your own production trials are binding.
Why the lower bound matters
Thickness is a lower bound for ballistic protection, not a tolerance band without consequence: a 15 mm plate to Class A may legitimately measure 14.4 mm.
Manuskript Kap. 13.3, S. 99
Calculation aid based on: Reference book, chapter 13.2–13.3; EN 10029 (unverified). Replaces neither the standard text nor manufacturer data nor a welding procedure specification.