MIC Green Book

Common Conversions Associated with Shot Peening
Metric (SI) to English (US Customary) English to Metric
Length 1 mm = 0.0394 in 1 in = 25.4 mm
1 m = 3.281 ft = 39.37 in 1 ft = 0.3048 m = 304.8 mm
Area 1 mm 2 = 1.550 x 10 –3 in 2 1 in 2 = 645.2 mm 2
1 m 2 = 10.76 ft 2 1 ft 2 = 92.90 x 10 –3 m 2
Mass 1 kg = 2.205 lbm 1 lbm = 0.454 kg
Force 1 kN = 224.8 lbf 1 lbf = 4.448 N
Stress 1 MPa = 0.145 ksi = 145 lbf/in 2 1 ksi = 6.895 MPa
Miscellaneous Terms & Constants
lbm = lb (mass) lbf = lb (force)
k = kilo = 10 3 M = mega = 10 6
G = giga = 10 9 µ = micro = 10 –6
1 Pa = 1 N/m 2 lbf/in 2 = psi
ksi = 1000 psi µm = micron = 1/1000 mm
Young’s Modulus (E) for Steel = 29 x 106 lbf/in2 = 200 GPa
Acceleration of Gravity = 32.17 ft/s2 = 9.81 m/s2 Density of Steel = 0.283 lbm/in 3 = 7.832 x 10 –6 kg/mm 3
www.metalimprovement.com
A P P E N D I X
C O NVERSIO N TABLES
51