Test Data Input — Material Properties
Every material on this site is illustrative — representative values, not certified test data, as every tool's methodology section says plainly. This tool replaces that with your own numbers: upload an Excel file of multiple test samples, and it computes the mean of each property and sends it to Parameter Review as a real, test-derived material. Nothing leaves your browser — the file is parsed locally, not uploaded to any server.
Optional, but enables two derived-value estimates below: a family-typical modulus (E) if you didn't test it, and a hardness-to-strength estimate (Su) for the non-austenitic steel family specifically \u2014 see "4. Derived Values" after upload.
Excel file (.xlsx), one row per sample, with any of these columns: Sample ID, E (Msi), Su (ksi), Fcy (ksi), Paris C, Paris m, KIC (ksi√in), Thickness (in), Elongation (%), Hardness (HRC). Column names are matched flexibly — you don't need exact header text. Only the columns you actually tested are needed — Hardness specifically enables a derived-strength estimate below if you selected a material and didn't test Su directly.
▾ Methodology, equations, and caveats
What this computes. For each recognized property column, this tool computes the sample mean and standard deviation using the standard sample-statistics formulas (n−1 in the denominator for standard deviation, the usual unbiased estimator). The mean is what gets sent to Parameter Review as that material's property value.
Sample size matters. A mean computed from very few samples is not a reliable estimate of the true population mean. This tool flags any property with fewer than 5 samples as low confidence — it still computes and sends a value, but treat it accordingly. More samples give a more trustworthy mean.
There is no limit on the number of samples you can upload. Aerospace test datasets in excess of 2,000 samples have been successfully run through the underlying statistics and Monte Carlo algorithms behind these tools without issue.
Deterministic use only. This tool feeds Parameter Review, which uses one representative value per property. If you want your data's scatter (not just its mean) to drive a Monte Carlo reliability analysis, use Test Data Input — Statistical Scatter instead, which feeds Probabilistic Fracture Life.
All parsing and statistics happen in your browser — the uploaded file is never sent to any server. Data sent to Parameter Review is stored only in this browser's local storage, the same mechanism used to carry COR between tools elsewhere on this site.