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Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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3D Scanners

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Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

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List Units: A B C D E-F G H-I J-L M N O-P Q-R S T U-Z
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Thermal conductance (total)
Unit Name Symbol SI Equivalent 
· watt per kelvin 
W/K  1 W/K 
Thermal conductivity
Unit Name Symbol SI Equivalent 
· British thermal unit (IT) per foot per hour per Fahrenheit degree 
Btu (IT)/ft-h-°F  1.73073 W/m-K 
· British thermal unit (IT)-inch per square foot per hour per Fahrenheit degree 
Btu (IT)-in/h-ft2-°F  0.144228 W/m-K 
· British thermal unit (IT)-inch per square foot per second per Fahrenheit degree 
Btu (IT)-in/s-ft2-°F  519.22 W/m-K 
· British thermal unit (therm.) per foot per hour per Fahrenheit degree 
Btu (therm.)/ft-h-°F  1.72958 W/m-K 
· British thermal unit (therm.)-inch per square foot per hour per Fahrenheit degree 
Btu (therm.)-in/h-ft2-°F  0.144131 W/m-K 
· British thermal unit (therm.)-inch per square foot per second per Fahrenheit degree 
Btu (therm.)-in/s-ft2-°F  518.873 W/m-K 
· calorie (IT) per centimeter per second per degree Celsius 
cal (IT)/cm-s-°C  418.673 W/m-K 
· calorie (therm.) per centimeter per second per degree Celsius 
cal (therm.)/cm-s-°C  418.4 W/m-K 
· watt per centimeter per celsius degree 
W/cm-°C  100 W/m-K 
· watt per meter per Celsius degree 
W/m-°C  1 W/m-K 
· watt per meter per kelvin 
W/m-K  1 W/m-K 
Thermal expansion coefficient
Unit Name Symbol SI Equivalent 
· microinch per inch per Fahrenheit degree 
µin/in-°F  1.8x10-6 /K 
· micron per meter per Celsius degree 
µm/m-°C  10x10-7 /K 
· per Celsius degree 
/°C  1 /K 
· per Fahrenheit degree 
/°F  1.8 /K 
· per Kelvin 
/K  1 /K 
Thermal heat capacity
Unit Name Symbol SI Equivalent 
· British thermal unit (IT) per pound mass 
Btu (IT)/lbm  2326 J/kg 
· British thermal unit (therm.) per pound mass 
Btu (therm.)/lbm  2324.44 J/kg 
· calorie (IT) per gram 
cal (IT)/g  4186.74 J/kg 
· calorie (therm.) per gram 
cal (therm.)/g  4184 J/kg 
· joule per gram 
J/g  1000 J/kg 
· joule per kilogram 
J/kg  1 J/kg 
· kilocalorie (IT) per kilogram 
Cal (IT)/kg, kcal/kg  4186.74 J/kg 
· kilowatt-hour per kilogram 
kWh/kg  3.6x106 J/kg 
Thermal heat transfer coefficient
Unit Name Symbol SI Equivalent 
· British thermal unit (IT) per square foot per hour per Fahrenheit degree 
Btu (IT)/h-ft2-°F  5.67826 W/m2-K 
· British thermal unit (therm.) per square foot per hour per Fahrenheit degree 
Btu (therm.)/h-ft2-°F  5.67446 W/m2-K 
· watt per square centimeter per kelvin 
W/cm2-K  1x104 W/m2-K 
· watt per square meter per degree celcius 
W/m2-°C  1 W/m2-K 
· watt per square meter per kelvin 
W/m2-K  1 W/m2-K 
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List Units: A B C D E-F G H-I J-L M N O-P Q-R S T U-Z
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FREE Publications
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

more publications