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What`s a "psi"?
What`s a "psi"?
Published: 2014/07/21
Channel: apprenticemath
Pounds per square inch
Pounds per square inch
Published: 2014/08/30
Channel: Audiopedia
Pounds per square inch
Pounds per square inch
Published: 2016/08/07
Channel: WikiWikiup
Converting Feet to PSI
Converting Feet to PSI
Published: 2015/12/14
Channel: FranklinWater
PRESSURE AND ITS UNIT(BAR, PSI, PASCAL, ATM) - PRESSURE 1 - ANUNIVERSE 22
PRESSURE AND ITS UNIT(BAR, PSI, PASCAL, ATM) - PRESSURE 1 - ANUNIVERSE 22
Published: 2017/02/18
Channel: ANUNIVERSE 22
PSIG Meaning
PSIG Meaning
Published: 2015/04/25
Channel: ADictionary
PSI Full Form
PSI Full Form
Published: 2017/12/09
Channel: Hindi Dictionary
how to convert psi to bar - pressure converter
how to convert psi to bar - pressure converter
Published: 2015/02/07
Channel: Electrical videos
Pounds per Square Inch
Pounds per Square Inch
Published: 2016/04/12
Channel: whaughey
PSI Pounds per Square Innovation
PSI Pounds per Square Innovation
Published: 2018/06/14
Channel: Steele Smith
Problem 3 PSI.wmv
Problem 3 PSI.wmv
Published: 2010/04/05
Channel: WaterandWaste
Pounds Per Square Inch - DLC Podcast Show, Season 5, Episode 14
Pounds Per Square Inch - DLC Podcast Show, Season 5, Episode 14
Published: 2015/08/05
Channel: pennyarcadeTV
Two Thousand Pounds Per Square Inch The Russel Middlebrook Series Book 5 Pdf Book
Two Thousand Pounds Per Square Inch The Russel Middlebrook Series Book 5 Pdf Book
Published: 2017/01/14
Channel: R Jordan
Hydraulics: Ft to PSI
Hydraulics: Ft to PSI
Published: 2010/09/08
Channel: 16FLSI
Spray Gun Air Pressure Required To Spray Paint a Car
Spray Gun Air Pressure Required To Spray Paint a Car
Published: 2013/03/11
Channel: BOSS PAINTER - Learn Auto Body And Paint!
Pounds per Square Inch
Pounds per Square Inch
Published: 2016/01/31
Channel: Rick Rogers
PSI Meaning
PSI Meaning
Published: 2015/04/21
Channel: SDictionary
how to convert bar to psi - pressure converter
how to convert bar to psi - pressure converter
Published: 2015/01/28
Channel: Electrical videos
Centimeters of water pressure and pounds per square inch. CPAP Therapy. FreeCPAPAdvice.com
Centimeters of water pressure and pounds per square inch. CPAP Therapy. FreeCPAPAdvice.com
Published: 2013/12/09
Channel: TheLankyLefty27
Day of Domination!!!  Diamonds are created under 725,000 pounds per square inch of Pressure ᴴᴰ
Day of Domination!!! Diamonds are created under 725,000 pounds per square inch of Pressure ᴴᴰ
Published: 2016/01/05
Channel: Justin Halladay
how to convert psi to kilogram per centimeter square kg/cm2 - pressure converter
how to convert psi to kilogram per centimeter square kg/cm2 - pressure converter
Published: 2015/02/08
Channel: Electrical videos
How to locate how many (PSI) Pound per Square Inch, on your tires when your tires are low.
How to locate how many (PSI) Pound per Square Inch, on your tires when your tires are low.
Published: 2018/01/31
Channel: Eric DIY Auto Fixes and Projects
Pressure Washer Buying Guide
Pressure Washer Buying Guide
Published: 2014/05/06
Channel: Canadian Tire
Psi Meaning
Psi Meaning
Published: 2015/04/13
Channel: SDictionary
Brick test- pounds per square inch
Brick test- pounds per square inch
Published: 2013/11/18
Channel: Mario Mutis
Four hundred and fifty two pounds per square inch
Four hundred and fifty two pounds per square inch
Published: 2015/06/27
Channel: Ian v Curtis Fine Art Sculptor.
How To Convert From Psi to Atm
How To Convert From Psi to Atm
Published: 2015/09/27
Channel: The Organic Chemistry Tutor
15 psi (pound per square inch) of VHB Pressure
15 psi (pound per square inch) of VHB Pressure
Published: 2010/09/27
Channel: Jerome Gipson
Pounds Per Square Inch?
Pounds Per Square Inch?
Published: 2011/05/22
Channel: Mojophoria
Zookeeper Jimmy Bravely Feeds American Alligators with BITE FORCE of 2,000 Pounds Per Square Inch! A
Zookeeper Jimmy Bravely Feeds American Alligators with BITE FORCE of 2,000 Pounds Per Square Inch! A
Published: 2016/12/17
Channel: Karen Marts
Bulletproof Glass vs 60,000 PSI Waterjet
Bulletproof Glass vs 60,000 PSI Waterjet
Published: 2017/05/27
Channel: Waterjet Channel
Calculating the Conversion Factor from PSI to Pascal, 13/2/2017
Calculating the Conversion Factor from PSI to Pascal, 13/2/2017
Published: 2017/02/15
Channel: Lutfi Al-Sharif The University of Jordan
Let
Let's Play A2XT! - 29 - Seventeen Pounds per Square Inch
Published: 2017/05/22
Channel: QubicTom
Pressing Cider - Critz Farm - 50,000 pounds per square inch
Pressing Cider - Critz Farm - 50,000 pounds per square inch
Published: 2010/10/31
Channel: Rob Thrasher
What Does PSI Stand For When Dealing With Pressure?
What Does PSI Stand For When Dealing With Pressure?
Published: 2018/06/30
Channel: sparky Questions
how to convert psi to kilogram per meter square kg/m2 - pressure conversion
how to convert psi to kilogram per meter square kg/m2 - pressure conversion
Published: 2015/02/08
Channel: Electrical videos
Canines VS Felines - The Truth About Biting Force (PSI/Pounds Per Square Inch)
Canines VS Felines - The Truth About Biting Force (PSI/Pounds Per Square Inch)
Published: 2018/02/11
Channel: Solid Spirit
Air DartsTest 75 PSI =pounds per square inch
Air DartsTest 75 PSI =pounds per square inch
Published: 2010/05/10
Channel: BuildingARobotArmy
What Is The Meaning Of Psi In Pressure?
What Is The Meaning Of Psi In Pressure?
Published: 2017/08/18
Channel: Uco Uco
Calculate Pressure psi in Bottom of Tank
Calculate Pressure psi in Bottom of Tank
Published: 2015/09/08
Channel: Wastewater Dan
So  it took 121,610 pounds of force =30,402.5 psi
So it took 121,610 pounds of force =30,402.5 psi
Published: 2017/11/08
Channel: Kulish Design Co., LLC
RYOBI 3000 PSI Honda Electric Start Pressure Washer
RYOBI 3000 PSI Honda Electric Start Pressure Washer
Published: 2018/04/20
Channel: RYOBI
how to convert psi to kilo pascal - pressure converter
how to convert psi to kilo pascal - pressure converter
Published: 2015/02/07
Channel: Electrical videos
Pressing Cider - 50,000 pounds per square inch
Pressing Cider - 50,000 pounds per square inch
Published: 2010/10/31
Channel: Rob Thrasher
What Is The Meaning Of Psi In Pressure?
What Is The Meaning Of Psi In Pressure?
Published: 2017/09/18
Channel: S Answers
Pool Filter PSI: High and Low Filter Pressure - Causes and Cures
Pool Filter PSI: High and Low Filter Pressure - Causes and Cures
Published: 2016/08/02
Channel: Swimming Pool Tips, Reviews & How To -MrDgvb1
What Is Swimming Pool GPM (Flow Rate) and PSI?
What Is Swimming Pool GPM (Flow Rate) and PSI?
Published: 2014/01/28
Channel: Clean Pool & Spa - Ultimate Swimming Pool Care Guide
Pounds Per Square Inch, moving upward
Pounds Per Square Inch, moving upward
Published: 2012/01/03
Channel: dansing124
Change Tire Pressure Units to PSI on 2017 Subaru Impreza
Change Tire Pressure Units to PSI on 2017 Subaru Impreza
Published: 2017/04/27
Channel: Groove Subaru
What Is The Normal Psi For A Boiler?
What Is The Normal Psi For A Boiler?
Published: 2017/06/12
Channel: SS House Tips
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Pound per square inch
Psidial.jpg
A pressure gauge reading in psi (red scale) and kPa (black scale)
Unit information
Unit system Imperial units, US customary units
Unit of Pressure, Stress
Symbol psi or lbf/in2
Unit conversions
1 psi in ...... is equal to ...
   SI units    6.894757 kPa

The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2;[1] abbreviation: psi) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch. In SI units, 1 psi is approximately equal to 6895 N/m2.

Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level. The converse is pounds per square inch gauge (psig), indicating that the pressure is relative to atmospheric pressure. For example, a bicycle tire pumped up to 65 psig in a local atmospheric pressure at sea level (14.7 psia) will have a pressure of 79.7 psia (14.7 psi + 65 psi).[2][3] When gauge pressure is referenced to something other than ambient atmospheric pressure, then the units would be pounds per square inch differential (psid).

Multiples[edit]

The kilopound per square inch (ksi) is a scaled unit derived from psi, equivalent to a thousand psi (1000 lbf/in2).

ksi are not widely used for gas pressures. They are mostly used in materials science, where the tensile strength of a material is measured as a large number of psi.[4]

The conversion in SI Units is 1 ksi = 6.895 MPa, or 1 MPa = 0.145 ksi.

The megapound per square inch (Mpsi) is another multiple equal to a million psi. It is used in mechanics for the elastic modulus of materials, especially for metals.[5]

The conversion in SI Units is 1 Mpsi = 6.895 GPa, or 1 GPa = 0.145 Mpsi.

Magnitude[edit]

Conversions[edit]

Pressure units
Pascal Bar Technical atmosphere Standard atmosphere Torr Pounds per square inch
(Pa) (bar) (at) (atm) (Torr) (lbf/in2)
1 Pa ≡ 1 N/m2 10−5 1.0197×10−5 9.8692×10−6 7.5006×10−3 0.000 145 037 737 730
1 bar 105 ≡ 100 kPa

≡ 106 dyn/cm2

1.0197 0.98692 750.06 14.503 773 773 022
1 at 98066.5 0.980665 ≡ 1 kgf/cm2 0.967 841 105 354 1 735.559 240 1 14.223 343 307 120 3
1 atm 101325 1.01325 1.0332 1 760 0.695 948 775 514 2
1 Torr 133.322 368 421 0.001 333 224 0.001 359 51 1/760 ≈ 0.001 315 789 1 Torr

≈ 1 mmHg

0.019 336 775
1 lbf/in2 6894.757 293 168 0.068 947 573 0.070 306 958 0.068 045 964 51.714 932 572 ≡ 1 lbf /in2

See also[edit]

References[edit]

  1. ^ IEEE Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units), IEEE Std 260.1™-2004 (Revision of IEEE Std 260.1-1993)
  2. ^ "Glossary of Industrial Air Cleaning Technology". United Air Specialists, Inc. Archived from the original on August 1, 2011. 
  3. ^ "Gage v. Sealed v. Absolute pressure" (PDF). Dynisco. 
  4. ^ "Tensile Strength of Steel and Other Metals". All Metals & Forge Group. Retrieved 2016-07-26. A metal’s yield strength and ultimate tensile strength values are expressed in tons per square inch, pounds per square inch or thousand pounds (KSI) per square inch. For example, a tensile strength of a steel that can withstand 40,000 pounds of force per square inch may be expressed as 40,000 PSI or 40 KSI (with K being the [multiplier] for thousands of pounds). The tensile strength of steel may also be shown in MPa, or megapascal. 
  5. ^ An example of the use of Mpsi in mechanics for the elastic moduli of several materials

External links[edit]

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