IGFA Line classification

Diameter in Inches Diameter in mm Pound (lbs.) Tested IGFA-class
lbs. kg
.003" 0.07 1.0    
.004" 0.10 1.2    
.005" 0.12 2.0    
.006" 0.15 2.7    
.008" 0.20 4.8    
.009" 0.22 6.0 6 2
.010" 0.25 7.5    
.012" 0.30 10.8    
.0125" 0.31 11.7 12 6
.014" 0.355 14.7    
.016" 0.40 19.0 20 10
.018" 0.45 24.2    
.020" 0.50 30.0 30 15
.022" 0.55 35.9    
.024" 0.60 43.1    
.025" 0.63 46.7 50 24
.026" 0.66 50.6    
.028" 0.71 58.6    
.030" 0.76 67.3    
.032" 0.81 76.5 80 37
.034" 0.86 86.5    
.036" 0.91 96.9    
.038" 0.96 108.6    
.040" 1.05 119.7    
.041" 1.06 125.7 130 60
.042" 1.1 131.9    
.044" 1.12 144.8    
.046" 1.16 158.2    
.048" 1.22 172.8    
.050" 1.27 187.0    
.052" 1.32 200    
.058" 1.47 250    
.063" 1.60 300    
.068" 1.72 350    
.072" 1.82 400    
.084" 2.14 500