CUSTOMARY UNITS TO SI UNITS
| QUANTITY | OTHER UNITS | MULTIPLY BY | FOR SI UNIT |
|---|---|---|---|
| Grammage (mass on ream basis) |
Pounds per ream (lb/ream) per 3000 square feet (lb/3000 Sq ft) |
1.6275 | Grams per square meter (g/m2) |
| Grammage (mass in grams per square meter) |
Pounds per 1000 square feet (lb/1000 Sq ft) | 4.8824 | Grams per square meter (g/m2) |
| Thickness | Millimetres (mm) Mils (or points or thousandths of an inch) |
1000 | Micrometers (m2) |
| Apparent density | Kilograms per cubic centimetre (g/cm2) Pounds per cubic foot (lb/Cft) |
1000 16.01846 |
Kilograms per square meter (kg/m2) |
| Tensile strength | Kilograms-force per 15 millimetre width (kgf/15 mm) Pounds-force per inch (lbf/in) |
0.65378 0.175127 |
Kilonewtons per meter (kN/m) |
| Tensile index replaced breaking length) |
Kilometres breaking length (Km) | 9.80665 | Newtonmeters per gram (N m/g) |
| Tensile index replaced breaking length) |
Kilograms-force meters per square meter (Kgf m/m2) Foot pinds-force per square foot (ft lbf/Sq ft) |
9.80665 14.5939 |
Joules per square meter (J/m2) |
| Tearing strength | Grams-force (gf) | 9.80665 | Millinewtons (mN) |
| Tensile index (replaced breaking length) |
Computed as 100 grams-force per gram per square meter (100 gf(g/m2)) |
0.0980665 | Millinewtons sq. meters per gram (mN m2/g) |
| Bursting strength | Kilograms-force per square centimetre (kgf/cm2) Pounds-force per square inch – psi (lbf/Sq in) |
98.0665 6.89476 |
Kilopascals (kPa) |
| Burst index (replaced burst factor) |
computed as grams-force per square centimetre per gram per square meter ((gf/cm2 /(g/m2)) |
0.0980665 | Kilopascals sq. meters per gram (kPa m2/g) |
| Z-direction strength properties (unit as appropriate) |
Kilograms-force per square centimetre (kgf/cm2) Pounds-force per square inch (lbf/Sq in) Foot pounds-force per square inch (ft lbf/Sq in) |
98.0665 6.89476 2101.5 |
Kilopascals (kPa) Kilopascals (kPa) Joules per square meter (J/m2) |
| Concora Medium Test (CMT) | Kilograms-force (kgf) Pounds-force (lbf) |
9.80665 4.44822 |
Newtons (N) |
| Ring Crush Test (RCT) | Kilograms-force per centimetre (kgf/cm) Pounds-force (for a 6-inch length) (lbf/6 in) |
0.980665 0.02919 |
Kilonewtons per meter (kN/m) |
| Edgewise compressive strength (ECT) |
Pounds-force per inch (lbf/in) | 0.175127 | Kilonewtons per meter (kN/m) |
| Flat crush resistance of corrugated board (FCT) |
Kilograms-force per square centimetre (kgf/cm2) | 98.0665 | Kilopascals (kPa) |
| Flat crush resistance of corrugated board (FCT) |
Pounds-force per square inch (lbf/Sq in) | 6.89476 | Kilopascals (kPa) |
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