Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Ton shopping experience:
1. Compare - without doubt the biggest advantage that the Ton offers shoppers today is the ability to compare thousands of Ton at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Ton? Wrong! If the Ton is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Ton then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Ton? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Ton and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Ton wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Ton then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Ton site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Ton, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Ton, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
Units of mass
There are three similar units of
mass called the
ton:
long ton (simply ton in countries such as the United Kingdom which formerly used the Imperial unit of weights and measures) is a weight ton or gross ton, and is 2,240 lb (exactly 1 E3 kg). In the UK and most of the areas which used the Imperial system, the metric tonne (1000 kg), which it is conveniently very similar to—less than 2% difference—is the only form of ton legal for trade.
- In the iron industry in the 17th century and 18th century, a ton shortweight was the standard 2240 lb., whereas a ton longweight was 2400 lb. (the hundredweight being 120 lb.)
- The long ton is used for petroleum products such as aviation fuel.
- Deadweight ton (abbreviation 'dwt') is a measure of a ship's carrying capacity, including bunker oil, fresh water, crew and provisions. It is expressed in metric tons (1,000 kg) or long tons (2,240 pounds, about 1,016 kg). This measurement is also used in the U.S. tonnage of naval ships.
- Increasingly, metric tonnes are being used rather than long tons in measuring the displacement of ships. See tonnage.
short ton (usually called simply ton, in the United States or sometimes called a net ton) = 2000 lb (about 1 E2 kg).
- Harbour ton used in South Africa in the 20th century, equal to 2000 pounds or one short ton.
Tonne, usually referred to as a tonne, is 1000 kg (or 1 E3) or approximately 2,204.6 pounds.
Both the long ton and the short ton are composed of twenty hundredweights, each having different values for the hundredweight (112 and 100 pounds respectively). Prior to the
15th century in
England, the ton was composed of 20 hundredweights, each of 108 lb, giving a ton of 2160 pounds.
Assay ton (abbreviation 'AT') is not a unit of measurement (nobody ever has
x assay tons of something), but rather a standard quantity used in assaying ores of precious metals; it is 29 1/6 grams (short assay ton) or 32 2/3 grams (long assay ton), the amount which bears the same ratio to a milligram as a short/long ton bears to a troy ounce. In other words, the number of milligrams of a particular metal found in a sample of this size gives the number of troy ounces contained in a short/long ton of ore.
In documents which predate 1960 the word
ton may be spelt
tonne, however in more recent documents the spelling
tonne refers exclusively to the metric
tonne.
In the context of nuclear power plants,
tHM and
MTHM mean (metric) tonnes of Heavy metals, and MTU means metric tonnes of uranium. In the
steel industry, the acronym
THM has the meaning 'tons/tonnes hot metal', which refers to the amount of liquid iron or steel that is produced (particularly in the context of blast furnace production/specific consumption).
A
dry ton or
dry tonne has the same mass value, but the material (sludge, slurries,
compost, and similar mixtures in which solid material is soaked with or suspended in
water) has been dried to a relatively low, consistent
moisture level (
dry weight). If the material is in its natural, wet state, it is called a
wet ton or
wet tonne.
Common abbreviations
In the U.S. mining industry, 'T' is used to distinguish the traditional ton from the metric ton, but 'T' is also the SI symbol for the tesla. The symbol 't', traditionally used for the long or short ton, is now reserved for the metric tonne.
Units of force
There are also the units of force based on each of these three mass units, but none are acceptable for use with SI. The tonne force, like the kilogram force, is no exception. Only the tonne as a unit of mass is acceptable for use with SI.
- 1 short ton force = 2000 pound-force (lbf) = 8.896443230521 kilonewtons (kN)
- 1 long ton force = 2240 lbf = 9.96401641818352 kN
- 1 tonne force = 1000 kilogram-force = 9.80665 kN
Units of volume
Also see
tonnage.
The
freight ton or
measurement ton is a unit of volume used for describing
ship capacities (tonnage) or cargo. One measurement ton is equal to:
- 40 cubic foot
- 1.481(481) cubic yards (the "481" digit sequence repeats infinitely)
- 1,132.67386368 litres
- 1.13267386368 cubic metres
The measurement ton is abbreviated as M/T, MT, or MTON, which can cause it to be confused with the
tonne.
The
register ton is also a unit of volume used for the cargo capacity of a ship, defined as 100 cubic feet (roughly 2.83 cubic metres). It is often abbreviated
GRT for
gross registered ton. It is known as a
tonneau de mer in Belgium, but, in France, a
tonneau de mer is 1.44 cubic metres or about 1.88 cubic yards.
The
Panama Canal net ton, a unit of volume used for billing for ships going through the Panama Canal, is the same as the register ton. The fee for example in the
1990s was roughly a couple
USD for each unit.
The
water ton was formerly used in Great Britain and equal to 224 imperial gallons (the volume occupied by a mass of one long ton under the conditions which define the imperial gallon).
See
1 E-1 m³ and orders of magnitude (volume) for a comparison with other volumes.
(Note that volume tons are units of convenience used in shipping and are not useful in science except that they are exactly defined.)
Units of energy and power
Ton of TNT
- A ton of TNT or tonne of TNT is a unit of energy equal to 109 (thermochemical) calories, also known as a gigacalorie (gigacalorie), equal to 4.184 gigajoules (gigajoule).
- A kiloton of TNT or kilotonne of TNT is a unit of energy equal to 1012 calories, also known as a teracalorie (teracalorie), equal to 4.184 terajoules (terajoule).
- A megaton of TNT (1,000,000 metric tonnes) or megatonne of TNT is a unit of energy equal to 1015 calories, also known (infrequently) as a petacalorie (petacalorie), equal to 4.184 petajoules (petajoule).
Note that these are small calories (cal). The dietary Calorie (Cal) is distinct and equal to one kilocalorie.
Early values for the explosive energy released by
trinitrotoluene (TNT) ranged from 900 to 1100 calories per gram. In order to standardise the use of the term
TNT as a unit of energy, an arbitrary value was assigned based on 1000 calories (1 kcal, 4.184 kilo
joules) per gram. Thus there is no longer a direct connection to the chemical TNT itself. It is now merely a unit of energy that happens to be expressed using words normally associated with mass (e.g. kilogram, tonne, pound) (IAEA references: , ). The definition applies for both spellings:
ton of TNT and
tonne of TNT.
Measurements in tons of TNT have been used primarily to express nuclear weapon yields, though they have also been used since in seismology as well.
ton of coal equivalent
- A ton of coal equivalent or tonne of coal equivalent (TCE), a conventional value of 7 Gcal (IT) = 29.3076 GJ.
ton of oil equivalent
- A ton of oil equivalent or tonne of oil equivalent (TOE), a conventional value of 10 Gcal (IT) = 41.868 GJ ≈ 10.0067 ton of TNT. See also GTOE.
Refrigeration ton
The unit
ton is used in refrigeration and
air-conditioning to measure heat absorption. Prior to the introduction of mechanical refrigeration, cooling was accomplished by delivering ice. Installing one ton of refrigeration replaced the daily delivery of one ton of ice.
- In the United States, a standard ton of refrigeration = 12,000 BTU/h = 200 BTU/min ≈ 3,517 watt. It is approximately the power required to cool 1 short ton of water by 1 Fahrenheit every 10 minutes; or the power required to melt one short ton (2,000 pound (mass)) of ice at 0 °C in 24 hours.
- A ton is also a unit of energy equal to that power for a period of a day, or 24 h × 12,000 BTU/h = 288,000 BTU ≈ 303.9 megajoules.
- A less common usage is the power required to cool 1 long ton of water by 1 °F every 10 minutes = 13,440 BTU/h ≈ 3,939 watt.
Marks' Standard handbook for Mechanical Engineers, 8th Ed., McGraw Hill, p. 19-3
Truck classes
When the light duty trucks were first produced, they were rated by their payload capacity in tons (e.g. 1/2-, 3/4-, & 1-ton). The Ford F-150, Chevy/GMC 1500, & Dodge 1500 are a 1/2-ton. The Ford F-250, Chevy/GMC 2500, & Dodge 2500 are a 3/4-ton. The Ford F-350, Chevy/GMC 3500, & Dodge 3500 are a 1-ton. But throughout the years, the payload capacities have increased while the ton title has stayed the same. The current ton rating is nothing more than just a truck name.
Miscellaneous tons
- Ton is also used informally to mean a large amount of something (material or not), for example, "We've been having a ton of good luck recently".
- The ton meant the upper levels of London society in the English Regency period. Ton comes from the French word meaning tone, as used in the phrase bon ton - good manners and fashionable style.
- In Britain, ton is colloquially used to refer to 100 of a given unit. Ton can thus refer to the speed of motor vehicles, namely to the speed of 100 miles per hour e.g. "Lee was doing a ton down the motorway", to money e.g. "How much did you pay for that?" "A ton" (=£100), to 100 points in a game e.g. "Eric just threw a ton in our darts game" or to a hundred of pretty much anything else.
A ton is also equivalent to 100 runs in the game of cricket.
See also
References
Units of mass
There are three similar units of
mass called the
ton:
long ton (simply ton in countries such as the United Kingdom which formerly used the Imperial unit of weights and measures) is a weight ton or gross ton, and is 2,240 lb (exactly 1 E3 kg). In the UK and most of the areas which used the Imperial system, the metric tonne (1000 kg), which it is conveniently very similar to—less than 2% difference—is the only form of ton legal for trade.
- In the iron industry in the 17th century and 18th century, a ton shortweight was the standard 2240 lb., whereas a ton longweight was 2400 lb. (the hundredweight being 120 lb.)
- The long ton is used for petroleum products such as aviation fuel.
- Deadweight ton (abbreviation 'dwt') is a measure of a ship's carrying capacity, including bunker oil, fresh water, crew and provisions. It is expressed in metric tons (1,000 kg) or long tons (2,240 pounds, about 1,016 kg). This measurement is also used in the U.S. tonnage of naval ships.
- Increasingly, metric tonnes are being used rather than long tons in measuring the displacement of ships. See tonnage.
short ton (usually called simply ton, in the United States or sometimes called a net ton) = 2000 lb (about 1 E2 kg).
Tonne, usually referred to as a tonne, is 1000 kg (or 1 E3) or approximately 2,204.6 pounds.
Both the long ton and the short ton are composed of twenty
hundredweights, each having different values for the hundredweight (112 and 100 pounds respectively). Prior to the 15th century in England, the ton was composed of 20 hundredweights, each of 108 lb, giving a ton of 2160 pounds.
Assay ton (abbreviation 'AT') is not a unit of measurement (nobody ever has
x assay tons of something), but rather a standard quantity used in
assaying ores of precious metals; it is 29 1/6 grams (short assay ton) or 32 2/3 grams (long assay ton), the amount which bears the same ratio to a milligram as a short/long ton bears to a
troy ounce. In other words, the number of milligrams of a particular metal found in a sample of this size gives the number of troy ounces contained in a short/long ton of ore.
In documents which predate 1960 the word
ton may be spelt
tonne, however in more recent documents the spelling
tonne refers exclusively to the metric tonne.
In the context of
nuclear power plants,
tHM and
MTHM mean (metric) tonnes of
Heavy metals, and MTU means metric tonnes of uranium. In the steel industry, the acronym
THM has the meaning 'tons/tonnes hot metal', which refers to the amount of liquid iron or steel that is produced (particularly in the context of
blast furnace production/specific consumption).
A
dry ton or
dry tonne has the same mass value, but the material (sludge, slurries,
compost, and similar mixtures in which solid material is soaked with or suspended in
water) has been dried to a relatively low, consistent moisture level (dry weight). If the material is in its natural, wet state, it is called a
wet ton or
wet tonne.
Common abbreviations
In the U.S. mining industry, 'T' is used to distinguish the traditional ton from the metric ton, but 'T' is also the SI symbol for the tesla. The symbol 't', traditionally used for the long or short ton, is now reserved for the metric tonne.
Units of force
There are also the units of force based on each of these three mass units, but none are acceptable for use with
SI. The tonne force, like the kilogram force, is no exception. Only the tonne as a unit of mass is acceptable for use with SI.
- 1 short ton force = 2000 pound-force (lbf) = 8.896443230521 kilonewtons (kN)
- 1 long ton force = 2240 lbf = 9.96401641818352 kN
- 1 tonne force = 1000 kilogram-force = 9.80665 kN
Units of volume
Also see
tonnage.
The
freight ton or
measurement ton is a unit of volume used for describing
ship capacities (tonnage) or cargo. One measurement ton is equal to:
- 40 cubic foot
- 1.481(481) cubic yards (the "481" digit sequence repeats infinitely)
- 1,132.67386368 litres
- 1.13267386368 cubic metres
The measurement ton is abbreviated as M/T, MT, or MTON, which can cause it to be confused with the tonne.
The
register ton is also a unit of volume used for the cargo capacity of a ship, defined as 100 cubic feet (roughly 2.83 cubic metres). It is often abbreviated
GRT for
gross registered ton. It is known as a
tonneau de mer in Belgium, but, in France, a
tonneau de mer is 1.44 cubic metres or about 1.88 cubic yards.
The
Panama Canal net ton, a unit of volume used for billing for ships going through the Panama Canal, is the same as the register ton. The fee for example in the
1990s was roughly a couple USD for each unit.
The
water ton was formerly used in Great Britain and equal to 224
imperial gallons (the volume occupied by a mass of one long ton under the conditions which define the imperial gallon).
See
1 E-1 m³ and
orders of magnitude (volume) for a comparison with other volumes.
(Note that volume tons are units of convenience used in shipping and are not useful in science except that they are exactly defined.)
Units of energy and power
Ton of TNT
- A ton of TNT or tonne of TNT is a unit of energy equal to 109 (thermochemical) calories, also known as a gigacalorie (gigacalorie), equal to 4.184 gigajoules (gigajoule).
- A kiloton of TNT or kilotonne of TNT is a unit of energy equal to 1012 calories, also known as a teracalorie (teracalorie), equal to 4.184 terajoules (terajoule).
- A megaton of TNT (1,000,000 metric tonnes) or megatonne of TNT is a unit of energy equal to 1015 calories, also known (infrequently) as a petacalorie (petacalorie), equal to 4.184 petajoules (petajoule).
Note that these are small calories (cal). The dietary Calorie (Cal) is distinct and equal to one kilocalorie.
Early values for the explosive energy released by
trinitrotoluene (TNT) ranged from 900 to 1100 calories per gram. In order to standardise the use of the term
TNT as a unit of energy, an arbitrary value was assigned based on 1000 calories (1 kcal, 4.184 kilojoules) per gram. Thus there is no longer a direct connection to the chemical TNT itself. It is now merely a unit of energy that happens to be expressed using words normally associated with mass (e.g. kilogram, tonne, pound) (IAEA references: , ). The definition applies for both spellings:
ton of TNT and
tonne of TNT.
Measurements in tons of TNT have been used primarily to express
nuclear weapon yields, though they have also been used since in seismology as well.
ton of coal equivalent
- A ton of coal equivalent or tonne of coal equivalent (TCE), a conventional value of 7 Gcal (IT) = 29.3076 GJ.
ton of oil equivalent
- A ton of oil equivalent or tonne of oil equivalent (TOE), a conventional value of 10 Gcal (IT) = 41.868 GJ ≈ 10.0067 ton of TNT. See also GTOE.
Refrigeration ton
The unit
ton is used in refrigeration and
air-conditioning to measure heat absorption. Prior to the introduction of mechanical refrigeration, cooling was accomplished by delivering ice. Installing one ton of refrigeration replaced the daily delivery of one ton of ice.
- In the United States, a standard ton of refrigeration = 12,000 BTU/h = 200 BTU/min ≈ 3,517 watt. It is approximately the power required to cool 1 short ton of water by 1 Fahrenheit every 10 minutes; or the power required to melt one short ton (2,000 pound (mass)) of ice at 0 °C in 24 hours.
- A ton is also a unit of energy equal to that power for a period of a day, or 24 h × 12,000 BTU/h = 288,000 BTU ≈ 303.9 megajoules.
- A less common usage is the power required to cool 1 long ton of water by 1 °F every 10 minutes = 13,440 BTU/h ≈ 3,939 watt.
Marks' Standard handbook for Mechanical Engineers, 8th Ed., McGraw Hill, p. 19-3
Truck classes
When the light duty trucks were first produced, they were rated by their payload capacity in tons (e.g. 1/2-, 3/4-, & 1-ton). The Ford F-150, Chevy/GMC 1500, & Dodge 1500 are a 1/2-ton. The Ford F-250, Chevy/GMC 2500, & Dodge 2500 are a 3/4-ton. The Ford F-350, Chevy/GMC 3500, & Dodge 3500 are a 1-ton. But throughout the years, the payload capacities have increased while the ton title has stayed the same. The current ton rating is nothing more than just a truck name.
Miscellaneous tons
- Ton is also used informally to mean a large amount of something (material or not), for example, "We've been having a ton of good luck recently".
- The ton meant the upper levels of London society in the English Regency period. Ton comes from the French word meaning tone, as used in the phrase bon ton - good manners and fashionable style.
- In Britain, ton is colloquially used to refer to 100 of a given unit. Ton can thus refer to the speed of motor vehicles, namely to the speed of 100 miles per hour e.g. "Lee was doing a ton down the motorway", to money e.g. "How much did you pay for that?" "A ton" (=£100), to 100 points in a game e.g. "Eric just threw a ton in our darts game" or to a hundred of pretty much anything else.
A ton is also equivalent to 100 runs in the game of cricket.
See also
References
Ton - Wikipedia, the free encyclopedia
edit] Units of mass. There are three similar units of mass called the ton: long ton (simply ton in countries such as the United Kingdom which formerly used the Imperial system of ...
Definition: ton from Online Medical Dictionary
The Online Medical Dictionary is a searchable dictionary of definitions from medicine, science and technology.
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