MIL-HDBK-5 Multi-Material Comparison — Yield Strength, Ultimate Strength and Elongation Against Temperature for Up to Ten Alloys

Put up to ten MIL-HDBK-5 materials on the same charts. Start from the common alloys in the banner, or open the full database to pick any alloy, form, temper, thickness and basis. Where a temperature curve has not been digitized yet, the material still appears at room temperature and the chart says what is missing.

Loading the allowables dataset…

Browse all materials
Blank shows every published band. Tables that do not break a property out by thickness always stay in the list.
Reading the Charts

Real units, not percentages

The handbook plots strength against temperature as a percentage of the room-temperature value. That hides which alloy is actually stronger: 7075-T6 keeps a smaller fraction of its strength at 400°F than 2024-T3 does, but starts far higher. Each curve here is multiplied by the material’s own tabulated allowable, so the lines cross where the materials really cross.

Which curve a material gets

An alloy usually has several temperature figures, one per temper group, and the figure caption names the tempers it covers. A material is matched to a curve only when the caption does not contradict its temper — 7075-T73 is never drawn with the 7075-T6 curve. If the only curve on file is for a different temper, the material is shown at room temperature and the card says so.

Time at temperature

Many figures carry one curve per exposure time (½ hour to 10,000 hours). The selector offers the times that the selected materials publish; a material that does not publish the chosen time falls back to its nearest curve and is marked as such under the chart.

Specific strength

Ftu/ω and Fty/ω divide each curve by the room-temperature density, which is held constant. It is the usual first-order treatment; thermal expansion changes density by a few percent at most over these ranges.

Where the Numbers Come From

Every value is transcribed from a MIL-HDBK-5J design mechanical and physical properties table, or digitized from a handbook figure. Nothing is interpolated between thickness bands, averaged across tempers, or filled in where the handbook is silent — those cells show . Digitization is ongoing, so the titanium and heat-resistant alloy chapters in particular have tables but few curves so far. MIL-HDBK-5 was superseded by MMPDS for new design work; check which document your program requires before using these numbers in a stress report.