Métrico Ton vs Short Ton vs Long Ton
Understanding o Mundo's Three Tons
Compare o TonsQuando someone says "a ton," qual ton do they mean? Depending on onde you são e o que indústria you're in, a ton could mean 1,000 kg, 2,000 pounds, ou 2,240 pounds. Estes three diferente "tons" cause endless confusion in international trade, shipping, e cotidiano conversation.
Este guia explains o differences entre métrico tons, short tons, e long tons, e helps you understand quando cada é usado.
Detailed Comparison
| Type | Também Called | Kilograms | Pounds | Primary Usar |
|---|---|---|---|---|
| Métrico Ton | Tonne (t) | 1,000 kg | 2,204.6 lb | International padrão |
| Short Ton | US Ton, Net Ton | 907.2 kg | 2,000 lb | United States |
| Long Ton | Imperial Ton, Gross Ton | 1,016 kg | 2,240 lb | UK (historical), shipping |
O Métrico Ton (Tonne)
O métrico ton—spelled "tonne" to distinguish it from outro tons—é o international padrão. It é igual a exatamente 1,000 kilograms ou aproximadamente 2,205 pounds.
Advantages:
- Clean decimal relationship (1 tonne = 1,000 kg)
- International standardization
- Usado in ciência, international trade, e mais countries
Comuns Uses:
- International shipping
- Commodity trading (steel, grain, etc.)
- Carbon emissions reporting
- Industrial production statistics
Símbolo: Usually "t" for tonne (métrico), ou "MT" for métrico ton.
O Short Ton (US Ton)
O short ton é o padrão ton in o United States. It é igual a 2,000 pounds ou sobre 907 kilograms—making it o lightest of o three tons.
Por que "Short"?
It's called "short" because it's shorter (lighter) than o British long ton. American industries adopted o 2,000-pound ton because it's a round number in o pound sistema.
Comuns Uses:
- US mining indústria
- US construction
- American industrial production
- US agriculture (though bushels são mais comum for grain)
Símbolo: Usually "ST" ou apenas "ton" in American contexts.
O Long Ton (Imperial Ton)
O long ton, também called o imperial ton ou gross ton, é igual a 2,240 pounds (20 hundredweight of 112 pounds cada) ou sobre 1,016 kilograms.
Historical Context:
O long ton comes from o British imperial sistema, onde a hundredweight foi 112 pounds (8 stone). Twenty hundredweight made a ton: 20 × 112 = 2,240 pounds.
Corrente Uses:
- British shipping (historically)
- Ship displacement medições
- Alguns UK industries (declining)
O long ton é increasingly rare as o UK tem largely adopted métrico medições, but it ainda appears in maritime contexts.
Tabela de Conversão
| Métrico Tons | Short Tons (US) | Long Tons (UK) |
|---|---|---|
| 1 | 1.102 | 0.984 |
| 5 | 5.512 | 4.921 |
| 10 | 11.023 | 9.842 |
| 50 | 55.116 | 49.210 |
| 100 | 110.231 | 98.421 |
| 1,000 | 1,102.31 | 984.21 |
Indústria-Específico Usage
International Shipping
Modern international shipping primarily uses métrico tons for cargo weight. No entanto, ship displacement e deadweight tonnage may ainda reference long tons in older documents.
Mining
US mining reports use short tons. International e Canadian mining companies use métrico tons. Always check qual ton é specified.
Steel Production
Global steel production statistics use métrico tons. O Mundo Steel Association reports in tonnes.
Agriculture
Grain exports são measured in métrico tons internationally. US domestic markets may use short tons ou bushels.
Conclusão
O three types of tons—métrico (1,000 kg), short (2,000 lb), e long (2,240 lb)—persist due to historical medição traditions. While o métrico ton dominates international trade, short tons remain comum in o US, e long tons appear in maritime contexts.
Quando dealing com large weights, always clarify qual ton é meant. A 10% difference can be significant quando you're buying ou selling hundreds of tons of material.