RHS rectangular hollow sections (EN 10219): 40x20, 60x40x4, 100x50x5 box section dimensions + STEP/STL — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/en-10219-rhs-rectangular-hollow-sections/ (sheet CC BY 4.0) Basis: Roymech cold-formed hollow section tables (BS EN 10219:1997 values: size, wall, outside and inside radius, mass, area); radius band from EN 10219-2 as quoted by two mills Catalog version: 2026-10-20 Overall (mm): length 100.0 - RHS (rectangular hollow section, also called rectangular tube or box section) to EN 10219: designation H x B x t, H the long outside side, B the short side, t the wall, all in mm. The same tube is sold in the US as rectangular HSS (aisc-hss-rectangular-square) in inch sizes. - Corner radius: EN 10219-2 gives a band for the outside radius, 1.6t to 2.4t for walls up to 6 mm, 2.0t to 3.0t for 6 to 10 mm, 2.4t to 3.6t above 10 mm (Nippon Steel Kenzai and the Ozdemir Boru declaration both print it). The radii in the table and the files are the Roymech section-table values, the middle of each band: 2t up to 6 mm wall, 2.5t at 6.3 and 8 mm, 3t at 12 mm and over, with inside radius = outside radius minus the wall. A real tube from one mill can sit anywhere in the band. - Sizes: every row of the Roymech table with H up to 100 mm (58 sizes). The table goes to 400 x 300 mm; larger sizes are not listed here. - Files: 18 sizes drawn as 100 mm long extrusions along X, B across (y), H up (z), z = 0 on the bottom face. Each drawn section area matches the printed area within 1.5 %; the table check also confirms mass = 0.785 kg/m per cm2 within 1.5 % and ro - ri = t on every row. - Nominal dimensions only: EN 10219-2 tolerances on size, wall (-10 %), squareness and corner radius are not applied. - McMaster-Carr's metric rectangular tube (12, 25, 40, 50, 55, 100 mm) is EN 10305-5 precision tube, not EN 10219; it is linked as a CAD source, not as an equivalent. designation (H x B x t, mm) H (mm) B (mm) t (mm) outside radius ro (mm) inside radius ri (mm) ro / t mass (kg/m) area (cm2) 40x20x2 40 20 2 4 2 2 1.68 2.14 40x20x2.5 40 20 2.5 5 2.5 2 2.03 2.59 40x20x3 40 20 3 6 3 2 2.36 3.01 50x25x2 50 25 2 4 2 2 2.15 2.74 50x25x2.5 50 25 2.5 5 2.5 2 2.62 3.34 50x25x3 50 25 3 6 3 2 3.07 3.91 50x30x2 50 30 2 4 2 2 2.31 2.94 50x30x2.5 50 30 2.5 5 2.5 2 2.82 3.59 50x30x3 50 30 3 6 3 2 3.3 4.21 50x30x4 50 30 4 8 4 2 4.2 5.35 60x40x2 60 40 2 4 2 2 2.93 3.74 60x40x2.5 60 40 2.5 5 2.5 2 3.6 4.59 60x40x3 60 40 3 6 3 2 4.25 5.41 60x40x4 60 40 4 8 4 2 5.45 6.95 60x40x5 60 40 5 10 5 2 6.56 8.36 70x50x2 70 50 2 4 2 2 3.56 4.54 70x50x2.5 70 50 2.5 5 2.5 2 4.39 5.59 70x50x3 70 50 3 6 3 2 5.19 6.61 70x50x4 70 50 4 8 4 2 6.71 8.55 70x50x5 70 50 5 10 5 2 8.13 10.4 80x40x2 80 40 2 4 2 2 3.56 4.54 80x40x2.5 80 40 2.5 5 2.5 2 4.39 5.59 80x40x3 80 40 3 6 3 2 5.19 6.61 80x40x4 80 40 4 8 4 2 6.71 8.55 80x40x5 80 40 5 10 5 2 8.13 10.4 80x60x2 80 60 2 4 2 2 4.19 5.34 80x60x2.5 80 60 2.5 5 2.5 2 5.17 6.59 80x60x3 80 60 3 6 3 2 6.13 7.81 80x60x4 80 60 4 8 4 2 7.97 10.1 80x60x5 80 60 5 10 5 2 9.7 12.4 90x50x2 90 50 2 4 2 2 4.19 5.34 90x50x2.5 90 50 2.5 5 2.5 2 5.17 6.59 90x50x3 90 50 3 6 3 2 6.13 7.81 90x50x3.6 90 50 3.6 7.2 3.6 2 7.24 9.23 90x50x4 90 50 4 8 4 2 7.97 10.1 90x50x5 90 50 5 10 5 2 9.7 12.4 100x40x2.5 100 40 2.5 5 2.5 2 5.17 6.59 100x40x3 100 40 3 6 3 2 6.13 7.81 100x40x4 100 40 4 8 4 2 7.97 10.1 100x40x5 100 40 5 10 5 2 9.7 12.4 100x50x2.5 100 50 2.5 5 2.5 2 5.56 7.09 100x50x3 100 50 3 6 3 2 6.6 8.41 100x50x4 100 50 4 8 4 2 8.59 10.9 100x50x5 100 50 5 10 5 2 10.5 13.4 100x50x6 100 50 6 12 6 2 12.3 15.6 100x50x6.3 100 50 6.3 15.75 9.45 2.5 12.5 15.9 100x60x3 100 60 3 6 3 2 7.07 9.01 100x60x3.6 100 60 3.6 7.2 3.6 2 8.37 10.7 100x60x4 100 60 4 8 4 2 9.22 11.7 100x60x5 100 60 5 10 5 2 11.3 14.4 100x60x6 100 60 6 12 6 2 13.2 16.8 100x60x6.3 100 60 6.3 15.75 9.45 2.5 13.5 17.2 100x80x2.5 100 80 2.5 5 2.5 2 6.74 8.59 100x80x3 100 80 3 6 3 2 8.01 10.2 100x80x4 100 80 4 8 4 2 10.5 13.3 100x80x5 100 80 5 10 5 2 12.8 16.4 100x80x6 100 80 6 12 6 2 15.1 19.2 100x80x6.3 100 80 6.3 15.75 9.45 2.5 15.5 19.7 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Roymech: Rectangular Hollow Sections, cold formed, BS EN 10219:1997: H, B, t, ro, ri, mass per metre, area — web — Dimensions and section data are facts; page says to check the standard for status — https://roymech.org/Useful_Tables/Sections/RHS_cf.html - Nippon Steel Kenzai: Hollow sections to EN 10219: external corner radius 1.6t-2.4t (t <= 6 mm), 2.0t-3.0t (6 < t <= 10), 2.4t-3.6t (t > 10) — web — Publisher's page; dimensions are facts — https://ns-kenzai.co.jp/english/021hollow_section_EN.html - Ozdemir Boru (EN 10219 declaration of performance): EN 10219 table 1: external corner profile R = 1.6T-2.4T / 2.0T-3.0T / 2.4T-3.6T by thickness range — web — Publisher's page; dimensions are facts — https://classic.lemu.dk/mediacdn/20160510075515/public/media/files/ydeevneerklaeringer/roer/ozdemir-boru/ozdemir_boru_en10219.pdf - McMaster-Carr: Low-carbon steel rectangular tubes (ASTM A513 / A500; metric EN 10305-5) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/low-carbon-steel-rectangular-tubes Free files (CC BY 4.0, Xem Studio; STEP + STL, 18 parts): https://xemstudio.com/files/hardware/en-10219-rhs-rectangular-hollow-sections/index.json API: https://xemstudio.com/api/geometry?object=en-10219-rhs-rectangular-hollow-sections