{
 "designation": "50x20x1.6RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 1.63,
 "dimensions_mm": {
  "d": 50.0,
  "b": 20.0,
  "t": 1.6,
  "ro": 3.2
 },
 "properties": {
  "A": 207.1649,
  "Ix": 60806.982,
  "Iy": 14222.0852,
  "Zx": 2432.2793,
  "Zy": 1422.2085,
  "Sx": 3138.0969,
  "Sy": 1633.8242,
  "J": 38944.3873,
  "C": 2548.7814,
  "Iw": 0.0,
  "rx": 17.1324,
  "ry": 8.2856,
  "mass_calc": 1.6262,
  "surface": 0.1345,
  "surface_t": 82.5188
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 36391.68,
  "phiNs": 83901.76445036763,
  "phiNt": 79240.55531423609,
  "phiMsx": 1270929.260598685,
  "phiMsy": 582482.3289321271,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/50x20x1-6rhs/"
}