MIL-HDBK-5 Material Property Lookup — Ftu, Fty, Fcy, Fsu, Fbru and Fbry by Alloy, Form, Temper, Thickness and Basis
Room-temperature design mechanical properties straight out of the MIL-HDBK-5 tables. Narrow by alloy, product form, temper, thickness and basis; every result links back to the handbook table it came from.
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Copy and CSV give exactly what the handbook publishes, in both unit systems. SolidWorks and ANSYS build a complete material card in SI base units, filling the gaps the handbook leaves — each opens a preview first showing every value and where it came from.
Basis
MIL-HDBK-5 publishes allowables on three statistical bases. A-basis is the value exceeded by 99% of the population with 95% confidence, and is used where failure of a single element would lose the structure. B-basis is exceeded by 90% with 95% confidence, and applies to redundant structure where load redistributes on failure. S-basis is the minimum value from the governing material specification, with no statistical statement attached.
Grain direction
Wrought products are anisotropic. L runs along the rolling or extrusion direction, LT across it in the plane of the product, and ST through the thickness. ST values are typically the lowest and are only published where the section is thick enough to test. Where the handbook prints no value for a grain direction, the lookup shows rather than substituting a neighbouring value.
Bearing allowables
Fbru and Fbry are tabulated at edge-distance ratios of e/D = 1.5 and e/D = 2.0, and are dry-pin values per MIL-HDBK-5 Section 1.4.7.1. Lubricated joints and other e/D ratios need the correction called out there.
Units
Stresses are in ksi, moduli in 103 ksi (msi), elongation in percent, and density in lb/in.3 — exactly as printed in the handbook, with no unit conversion applied.
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Every value on this page is transcribed from a MIL-HDBK-5 design mechanical and physical properties table. The lookup does not interpolate between thickness bands, average across tempers, or synthesise a value the handbook does not publish — if a material condition is not in the table, it is not in the result. Each result names its source table and links to both the transcribed table on the relevant chapter page and the corresponding page of the handbook itself.
MIL-HDBK-5 was superseded by MMPDS for new design work. It remains the governing document for a great deal of legacy hardware, and it is public domain, which MMPDS is not. Check which document your program requires before using these numbers in a stress report.
Room-temperature allowables, temperature knockdown, tangent modulus and a two-material comparison are live. These are the pieces still outstanding, all of them waiting on figure digitization, and they will be wired into this same lookup as each chapter is finished:
- Exposure knockdown — properties measured back at room temperature after a spell held hot, which is a different question from properties measured at temperature. Fifteen effect-of-exposure curves are already digitized and tagged; nothing reads them yet, so the “time at temperature” selector above still applies only to the effect-of-temperature family.
- Digitization in progress — titanium (Chapter 5) and heat-resistant alloys (Chapter 6) are now in the lookup, but their figures are still being digitized, so some alloys show a table with few or no curves yet. The dataset currently runs to 1,379 conditions across aluminium, magnesium, titanium, the carbon and low-alloy steels, both stainless families, and the iron-, nickel- and cobalt-base heat-resistant alloys. Also outstanding are the tables in already-published chapters whose layout the extractor skips.