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Engineering Material Properties Guide

This document provides information on the specific weight, melting point, coefficient of thermal expansion, and shrinkage of various materials. It includes a table with these properties for materials like steel, cast steel, grey cast iron, high-speed steel, tungsten carbide, brass, aluminum, magnesium, and others. It also lists densities and melting/boiling points for substances like acetylene, carbon dioxide, air, propane, alcohol, and water.

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112 views1 page

Engineering Material Properties Guide

This document provides information on the specific weight, melting point, coefficient of thermal expansion, and shrinkage of various materials. It includes a table with these properties for materials like steel, cast steel, grey cast iron, high-speed steel, tungsten carbide, brass, aluminum, magnesium, and others. It also lists densities and melting/boiling points for substances like acetylene, carbon dioxide, air, propane, alcohol, and water.

Uploaded by

muhd.qasim
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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2 Westermann Tables

Specific Weight—Melting Point—Coefficient of Thermal Expansion—Shrinkage

Specific weight = Weight per unit volume (gf/cm3 or kgf/dm3)


1

Melting point (Fusion point) = Temperature at which particular material starts melting

1° C α
Coefficient of linear (thermal) = Increase in length of unit length of a
1 expansion α solid for temperature rise of 1°C.

Materials
Specific weight Coefficient of
Material Melting point °C Material
gf/cm3 linear expansion

Steel 7.85 1350…1450 Iron and Steel 0.000 012


Cast steel 7.85 Chrome steel 0.000 010
Grey cast iron 7.2 1150…1250 Nickel steel 0.000 012
High-speed steel 9.0 ≈ 2000 Tungsten carbide 0.000 006
Tungsten carbide 14.75 ≈ 2000 Invar 0.000 0015
Constantan 8.89 ≈ 1600 Chromium 0.000 007
Invar (36% Ni) 8.7 1450 Constantan 0.000 015
Brass 8.5 ≈ 900 Electron 0.000 024
Al bronze 8.4 Aluminium 0.000 023
Al cast bronze 7.6 Magnesium 0.000 026
Tin bronze 8.6 ≈ 900 Gold 0.000 014
Lead bronze 9.5 Silver 0.000 019
Al-alloy (Al, Cu, Mg) 2.8 ≈ 650 Zinc 0.000 030
Mg-alloy 1.8 ≈ 650 Tin 0.000 023
Babbitt metal 7.5...10.1 300…400 Lead 0.000 029
Plexiglass 1.2 Nickel 0.000 013
Platinum 0.000 009
Alcohol at 18°C 0.79 –110 Brass 0.000 018
Petrol at 15°C 0.72 –150 Brouce 0.000 017
Copper sulphate 1.11 Plexiglass 0.000 010
Water at 4°C 1.0 0 Glass 0.000 008
Porcelain 0.000 003
Acetylene at 0°C 1.17 kg/m3 –84
Carbon dioxide at 0°C 1.90 kg/m3 –78
Air at 0°C 1.29 kg/m3 –194
Propane at 0°C 2.00 kg/m3 –43
Shrinkage = difference in volume of the mould compared with the
volume of the casting after cooling, in percent

Material Shrinkage Material Shrinkage

Grey cast iron 1% Brass 1.5%


Cast steel 2% Copper 1%
Malleable iron 1.6% Tin, lead 1%
Brouce 1.5% Zinc alloys 1.5%
Gun metal 1.5% Al, Mg alloys 1.25%

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