Square & Rectangular Tubing

Shaped Structural Tublng Tensile Strength, min. psi (M Pa) Yield Strength, min.psi (M Pa) Elongation in 2 in.(50.8 mm), min. % Grade A 45,000 (310) 39,ooo(269) %1 Grade B 58,000(400) 46,000(317) 82 Grade C 62,000(427) 50,000 (34s) 213 ,Appliestospecifiedwallthickresses0.l20in.(3.05mm)andover. Forwalltricknessesunder0.l20in., ttrd minimum elongation shall be calculated by the formula: percent elongation. in 2 in. = 56t + 17.5. 2Applies to specifidd wall thicknesses 0.1 80 in. (4.57 mm) and over. For wall thickneses under 0.180 in., ihe minidrum elongation shall be calculated by lhe formula: percent elongation in 2 in. = 61 t + 12. oAipties to specied idt tnblnesses 0.120 in. i3.05 mm) and over. For lighter wall lhicknesses, elongation shallbe by agreement with the manufacturer. Tolerance for Corner Thlckness and Wall Thlckness hqest outside dimension acros flab in Tolerance for outside dimensions incfudino convexiU or concavitv2, in. + 0.020 + 0.025 + 0.030 + lolo Wall tridkness tohirance3 ...........-.. + 1O percent of nominal wall thickness exclusive of weld area. 2Measurements taken to confomance with oubide dimensions, squareness and comer radius shall be taken at least 2 in. trom either end of the section. For rectangular sections, the tolerance calculated for the larger flat dimensions sh_all also aPplV to. tne smaller diri'ension. This tolerance may be increased 507o when applied to the smaller dimension, if the nation ol cross-sectional dimensions i5 between 1-1l2ard 3, and 1007o when the ratio exceeds 3. This specilicatim covers electdc+esistance welded catbon and alloy steeltubing for use as medtanical tubino'. ltcoversround,square,reciangular,andspecialshapesmadefrom'mandreldrawn'and'special smooth inside diameter".' Common giades in warehouse stocks are 1010, 101 5, 1020 and 1026