26
Fundamentals of Corrosion
TabLE 2.2
Conversion Factors from Inches per Year (ipy) to
Milligrams per Square Decimeter per Day (mdd)
Metal
Density
(g/cm 3 )
0.00144
Density
(× 10 -3 )
696 ×
Density
Aluminum
2.72
0.529
1890
Brass (red)
8.75
0.164
6100
Brass (yellow)
8.47
0.170
5880
Cadmium
8.65
0.167
6020
Columbium
8.4
0.171
5850
Copper
8.92
0.161
6210
Copper-nickel (70/30)
8.95
0.161
6210
Iron
7.87
0.183
5480
Duriron
7.0
0.205
4870
Lead (chemical)
11.35
0.127
7900
Magnesium
1.74
0.826
1210
Nickel
8.89
0.162
6180
Monel
8.84
0.163
6140
Silver
10.50
0.137
7300
Tantalum
16.6
0.0868
11550
Titanium
4.54
0.317
3160
Tin
7.29
0.198
5070
Zinc
7.14
0.202
4970
Zirconium
6.45
0.223
4490
Note: Multiply ipy by (696 × density) to obtain mdd. Multiply
mdd by (0.00144/density) to obtain ipy.