Mechanical Properties STANDARD DUTY Size (Width x Thickness) Footage Yield Breaking Load mm Inch m/kg N Lbs 9.5 x 0.40 3/8 x 0.015 33.7 3 200 726 9.5 x 0.45 3/8 x 0.017 30.0 3 600 817 9.5 x 0.50 3/8 x 0.020 27.0 3 960 897 12.7 x 0.40 1/2 x 0.015 25.2 4 280 971 12.7 x 0.45 1/2 x 0.017 22.4 4 820 1 092 12.7 x 0.50 1/2 x 0.020 20.2 5 290 1 199 12.7 x 0.60 1/2 x 0.023 16.8 6 350 1 439 16 x 0.40 5/8 x 0.015 20.0 5 390 1 223 16 x 0.45 5/8 x 0.017 17.8 6 070 1 376 16 x 0.50 5/8 x 0.020 16.0 6 660 1 511 16 x 0.60 5/8 x 0.023 13.4 8 000 1 813 19 x 0.40 3/4 x 0.015 16.9 6 400 1 452 19 x 0.45 3/4 x 0.017 15.0 7 210 1 634 19 x 0.50 3/4 x 0.020 13.5 7 910 1 794 19 x 0.56 3/4 x 0.022 12.0 8 860 2 010 19 x 0.60 3/4 x 0.023 11.2 9 500 2 153 19 x 0.64 3/4 x 0.025 10.5 10 130 2 297 19 x 0.70 3/4 x 0.028 9.6 10 880 2 468 19 x 0.80 3/4 x 0.031 8.4 12 440 2 820 25 x 0.70 1.0 x 0.028 7.3 14 320 3 247 25 x 0.80 1.0 x 0.031 6.4 16 370 3 711 25 x 1.02 1.0 x 0.040 5.0 20 490 4 647 32 x 0.80 1-1/4 x 0.031 5.0 20 950 4 750 32 x 0.90 1-1/4 x 0.035 4.5 23 140 5 248 32 x 1.02 1-1/4 x 0.040 3.9 26 230 5 948