{
 "designation": "50x20x2.5RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 2.42,
 "dimensions_mm": {
  "d": 50.0,
  "b": 20.0,
  "t": 2.5,
  "ro": 5.0
 },
 "properties": {
  "A": 308.8986,
  "Ix": 84747.7507,
  "Iy": 19223.9925,
  "Zx": 3389.91,
  "Zy": 1922.3992,
  "Sx": 4511.2811,
  "Sy": 2315.3027,
  "J": 54952.6399,
  "C": 3486.9753,
  "Iw": 0.0,
  "rx": 16.5637,
  "ry": 7.8889,
  "mass_calc": 2.4249,
  "surface": 0.1314,
  "surface_t": 54.3038
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 54675.0,
  "phiNs": 125103.91711515545,
  "phiNt": 118153.69949764681,
  "phiMsx": 1827068.8649954582,
  "phiMsy": 937697.6082681293,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/50x20x2-5rhs/"
}