{
 "designation": "50x50x4.0SHS",
 "type": "Square Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 5.35,
 "dimensions_mm": {
  "d": 50.0,
  "b": 50.0,
  "t": 4.0,
  "ro": 10.0
 },
 "properties": {
  "A": 681.0404,
  "Ix": 228703.7057,
  "Iy": 228703.7057,
  "Zx": 9148.1482,
  "Zy": 9148.1482,
  "Sx": 11380.7719,
  "Sy": 11380.7719,
  "J": 402818.4688,
  "C": 14279.2896,
  "Iw": 0.0,
  "rx": 18.3253,
  "ry": 18.3253,
  "mass_calc": 5.3462,
  "surface": 0.1828,
  "surface_t": 34.1739
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 81648.0,
  "phiNs": 275821.3704197322,
  "phiNt": 260497.9609519693,
  "phiMsx": 4609212.622954716,
  "phiMsy": 4609212.622954722,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/square-hollow-sections/50x50x4-0shs/"
}