(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.)
|
Properties
of Gray Cast Iron
|
| ASTM
Number |
Tensile
Strength (Kpsi) |
Compressive
Strength
(Kpsi) |
Shear
Modulus of Rupture (Kpsi) |
Modulus
of Elasticity (Mpsi) |
Endurance
Limit
(Kpsi) |
Brinell
Hardness H_b |
| Tension |
Torsion |
| 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 |
