尺 寸 | 特 性** | |||||||||
公稱*尺寸 | 壁厚 | 每英尺重量 | 截面積 | X-X軸 | Y-Y軸 | |||||
Ix | Sx | rx | Iy | Sy | ry | |||||
ln. | ln. | Lb. | ln.2 | ln.4 | ln.3 | ln. | ln.4 | ln.3 | ln. | |
8×3 | .3750 | 3/8 | 24.93 | 7.33 | 51.0 | 12.7 | 2.64 | 10.4 | 6.92 | 1.19 |
.3125 | 5/16 | 21.21 | 6.23 | 44.7 | 11.2 | 2.68 | 9.25 | 6.16 | 1.22 | |
.2500 | 1/4 | 17.32 | 5.09 | 37.6 | 9.40 | 2.72 | 7.90 | 5.26 | 1.25 | |
.1875 | 3/16 | 13.25 | 3.89 | 29.6 | 7.40 | 2.76 | 6.31 | 4.21 | 1.27 | |
8×2 | .3750 | 3/8 | 22.37 | 6.58 | 40.1 | 10.0 | 2.47 | 3.85 | 3.85 | .765 |
.3125 | 5/16 | 19.08 | 5.61 | 35.5 | 8.87 | 2.51 | 3.52 | 3.52 | .792 | |
.2500 | 1/4 | 15.62 | 4.59 | 30.1 | 7.52 | 2.56 | 3.08 | 3.08 | .819 | |
.1875 | 3/16 | 11.97 | 3.52 | 23.9 | 5.97 | 2.60 | 2.52 | 2.52 | .847 | |
7×5 | .5000 | 1/2 | 35.24 | 10.4 | 63.5 | 18.1 | 2.48 | 37.2 | 14.9 | 1.90 |
.3750 | 3/8 | 27.48 | 8.08 | 52.2 | 14.9 | 2.54 | 30.8 | 12.3 | 1.95 |