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Permeability Number or Standard Specimen Formula

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Permeability Number is the rate of flow of air passing through a standard specimen under a standard pressure. Check FAQs

PN = \frac{501.28}{p c \cdot t p}

PN - Permeability Number?p_c - Pressure in Casting?t_p - Time?

Permeability Number or Standard Specimen Example

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With units

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Here is how the Permeability Number or Standard Specimen equation looks like with Values.

Here is how the Permeability Number or Standard Specimen equation looks like with Units.

Here is how the Permeability Number or Standard Specimen equation looks like.

4.3689 = \frac{501.28}{3.9 \cdot 3}

4.3689H/m = \frac{501.28}{3.9kgf/m² \cdot 3s}

4.3689 = \frac{501.28}{3.9 \cdot 3}

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Permeability Number or Standard Specimen Solution

Follow our step by step solution on how to calculate Permeability Number or Standard Specimen?

FIRST Step Consider the formula

PN = \frac{501.28}{p c \cdot t p}

Next Step Substitute values of Variables

∴

PN = \frac{501.28}{3.9kgf/m² \cdot 3s}

Next Step Convert Units

∴

PN = \frac{501.28}{38.2459Pa \cdot 3s}

Next Step Prepare to Evaluate

∴

PN = \frac{501.28}{38.2459 \cdot 3}

Next Step Evaluate

∴

PN = 4.36891746360352H/m

LAST Step Rounding Answer

∴

PN = 4.3689H/m

Permeability Number or Standard Specimen Formula Elements

Variables

Permeability Number

Permeability Number is the rate of flow of air passing through a standard specimen under a standard pressure.

Symbol: PN

Measurement: Magnetic PermeabilityUnit: H/m

Note: Value should be greater than 0.

Formulas to find Permeability Number

Pressure in Casting

Pressure in Casting is the force applied to the molten metal during the casting process, which can affect the flow, filling, and solidification of the material.

Symbol: p_c

Measurement: PressureUnit: kgf/m²

Note: Value should be greater than 0.

Formulas to find Pressure in Casting

Time

Time is various stages and durations throughout the casting process.

Symbol: t_p

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Time

Other Formulas to find Permeability Number

Go Permeability Number

PN = \frac{V air \cdot h s}{ρ \cdot A \cdot t p}

Other formulas in Permeability Number category

Go Air Pressure during Testing

ρ = \frac{V \cdot H sp}{PN \cdot A \cdot t p}

Go Cross-Sectional Area of Specimen

A = \frac{V \cdot H sp}{PN \cdot ρ \cdot t p}

Go Time Taken during Testing

t p = \frac{V \cdot H sp}{PN \cdot ρ \cdot A}

Go Time Taken in Standard Specimen Testing

t p = \frac{501.28}{PN \cdot p c}

How to Evaluate Permeability Number or Standard Specimen?

Permeability Number or Standard Specimen evaluator uses Permeability Number = 501.28/(Pressure in Casting*Time) to evaluate the Permeability Number, The Permeability Number or Standard Specimen is calculated by simply using all the standard parameters in place of formula. The rate of flow of air passing through a standard specimen under a standard pressure is termed as permeability number. Permeability Number is denoted by PN symbol.

How to evaluate Permeability Number or Standard Specimen using this online evaluator? To use this online evaluator for Permeability Number or Standard Specimen, enter Pressure in Casting (p_c) & Time (t_p) and hit the calculate button.

FAQs on Permeability Number or Standard Specimen

What is the formula to find Permeability Number or Standard Specimen?

The formula of Permeability Number or Standard Specimen is expressed as Permeability Number = 501.28/(Pressure in Casting*Time). Here is an example- 4.368917 = 501.28/(38.2459349999973*3).

How to calculate Permeability Number or Standard Specimen?

With Pressure in Casting (p_c) & Time (t_p) we can find Permeability Number or Standard Specimen using the formula - Permeability Number = 501.28/(Pressure in Casting*Time).

What are the other ways to Calculate Permeability Number?

Here are the different ways to Calculate Permeability Number-

Permeability Number=(Volume of Air in Casting*Height of Specimen)/(Air Pressure on Wall*Cross-Sectional Area of Specimen*Time)

Can the Permeability Number or Standard Specimen be negative?

No, the Permeability Number or Standard Specimen, measured in Magnetic Permeability cannot be negative.

Which unit is used to measure Permeability Number or Standard Specimen?

Permeability Number or Standard Specimen is usually measured using the Henry per Meter[H/m] for Magnetic Permeability. Henry per Centimeter[H/m], Henry per Kilometer[H/m] are the few other units in which Permeability Number or Standard Specimen can be measured.

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Permeability Number or Standard Specimen Formula

​GoPermeability Number Formula

Permeability Number or Standard Specimen Example

Permeability Number or Standard Specimen Solution

Permeability Number or Standard Specimen Formula Elements

Other Formulas to find Permeability Number

Other formulas in Permeability Number category

How to Evaluate Permeability Number or Standard Specimen?

FAQs on Permeability Number or Standard Specimen

Variable Name

GoPermeability Number Formula