Tool 1 · Stress–Strain Calculator (ASTM E8)
Enter tensile-test numbers, get the datasheet values
σ = F/A₀ · ε = ΔL/L₀ · E = σ/ε (elastic region only)
Results appear here.
Tool 2 · Hardness → Strength Converter
The 10-second receiving-inspection check (steels)
σ_u (psi) ≈ 500 × HB · σ_u (MPa) ≈ 3.45 × HB
Result appears here.
Drill · Sort Into the Four Families
Classify each item. Check when done.