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      04 Jul

    Equations to describe the Balije Efficiency Curves for Turbo machinery {Pumps and compressors} in terms of Specific Diameter and Specific Speed.

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Chemical and Process Engineering Resources

ChE Links from Dr. Bernhard Spang

Materials of Construction

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About Aluminium

From the International Aluminium Institute, what is aluminium, where does it come from, and how much is produced? The site also contains information about applications, properties and manufacturing processes.


European Numbering System for Non-Ferrous Metals

An introduction to the European CEN standards, from Copper.Org.


Metal Weight Calculator

From Principal Metals, online calculation of weight in lbs for specified alloy, shape, and dimension.


Metals Designations and Equivalents

From Granta Design Limited, contains tables of equivalent national and international designation systems for Ferrous Metals, Aluminium Alloys, Magnesium Alloys, Copper Alloys, Nickel Alloys, and Titanium Alloys.



From San Diego Plastics, Inc., an introductory text covering the history, properties, processing, and selection of plastics.


Specifications Search

From Principal Metals, properties of materials according to specifications from AFNOR, AISI, ASME, ASTM, DIN and other standards organizations.


Standard Designations for Copper and Copper Alloys

Introduction to the Unified Numbering System (UNS) for wrought and cast copper and copper alloy products and lists of designations and compositions.


The Stainless Steel Information Center - Information Handbooks

Publications about stainless steel for download.