{
 "designation": "50x20x2.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 1.99,
 "dimensions_mm": {
  "d": 50.0,
  "b": 20.0,
  "t": 2.0,
  "ro": 4.0
 },
 "properties": {
  "A": 253.6951,
  "Ix": 72307.4818,
  "Iy": 16681.3343,
  "Zx": 2892.2993,
  "Zy": 1668.1334,
  "Sx": 3782.2513,
  "Sy": 1956.8252,
  "J": 46579.2305,
  "C": 3004.9899,
  "Iw": 0.0,
  "rx": 16.8825,
  "ry": 8.1089,
  "mass_calc": 1.9915,
  "surface": 0.1331,
  "surface_t": 66.9005
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 44712.0,
  "phiNs": 102746.50695369949,
  "phiNt": 97038.36767849397,
  "phiMsx": 1531811.793646165,
  "phiMsy": 782485.5027103504,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/50x20x2-0rhs/"
}