Convert Pounds-force per inch to Joules per square metre
Convert Pounds-force per inch (lbf/in) to Joules per square metre (J/m²) instantly and accurately.
Conversion Formula
J/m² = lbf/in × 175.1268352
About Pounds-force per inch
The pound-force per inch (lbf/in) equals (0.45359237 × 9.80665) / 0.0254 ≈ 175.127 N/m, used in US industrial specifications for adhesive peel strength, hot-melt bond lines, and surface tension of molten metals. 1 lbf/in = 12 lbf/ft ≈ 175.127 N/m ≈ 175 127 mN/m.
About Joules per square metre
The joule per square metre (J/m²) equals 1 N/m exactly - the surface-fracture-energy (G_c) form used in fracture mechanics and wetting thermodynamics. Values: silica glass ~0.8 J/m²; aluminium ~1.4 J/m²; silicon carbide ~10-25 J/m²; tough metals 50-100 J/m². 1 J/m² = 1 N/m = 1 000 mJ/m².
Quick Reference Table
| Pounds-force per inch (lbf/in) | Joules per square metre (J/m²) |
|---|---|
| 1 lbf/in | 175.127 J/m² |
| 2 lbf/in | 350.254 J/m² |
| 5 lbf/in | 875.634 J/m² |
| 10 lbf/in | 1751.27 J/m² |
| 25 lbf/in | 4378.17 J/m² |
| 50 lbf/in | 8756.34 J/m² |
| 100 lbf/in | 17512.7 J/m² |