|Table of Contents |Section Contents|
(The American Society for Testing Materials (ASTM) numbering system for grey cast iron is established such that the numbers corespond to the minimum tensile strength in kpsi. Thus an ASTM no. 20 cast iron has a minimum tensile strength of 20 kpsi. Note particularly that the tabulations are typical values. Multiply strength in kpsi be 6.89 to get strength in MPa.)
Shear Modulus of elasticity,
Tensile Compressive modulus of Mpsi Endurance Brinell
ASTM strength, strength, rupture, ---------------------- limit, hardness,
number kpsi kpsi kpsi Tension Torsion kpsi H_b
-------- --------- ----------- ---------- ---------- ---------- --------- ---------
20 22 83 26 9.6-14 3.9-5.6 10 156
25 26 97 32 11.5-14.8 4.6-6.0 11.5 174
30 31 109 40 13.0-16.4 5.6-6.6 14 201
35 36.5 124 48.5 14.5-17.2 5.8-6.9 16 212
40 42.5 140 57 16.0-20 6.4-7.8 18.5 235
50 52.5 164 73 18.8-22.8 7.2-8.0 21.5 262
60 62.5 187.5 88.5 20.4-23.5 7.8-8.5 24.5 302
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