tonf (UK)
UK long ton-force
Forceexact by definition
The UK long ton-force is the weight of 2240 pounds under standard gravity, exactly 9964.0164181835 newtons. It appears in British engineering literature up to the 1970s, in ship launching calculations and in older material test reports, where "tons per square inch" was the standard strength unit.
Watch out: Old British stress figures in tons per square inch are almost always long tons. Reading 30 tsi as short tons understates the strength by 12 percent.
| 1 tonf (UK) | 9,964.0164 N |
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