{
 "designation": "127x51x3.5RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 9.07,
 "dimensions_mm": {
  "d": 127.0,
  "b": 51.0,
  "t": 3.5,
  "ro": 8.75
 },
 "properties": {
  "A": 1154.9216,
  "Ix": 2202345.2683,
  "Iy": 525713.9802,
  "Zx": 34682.6027,
  "Zy": 20616.2345,
  "Sx": 44590.6979,
  "Sy": 23446.6781,
  "J": 1443872.9841,
  "C": 37213.2184,
  "Iw": 0.0,
  "rx": 43.6683,
  "ry": 21.3353,
  "mass_calc": 9.0661,
  "surface": 0.341,
  "surface_t": 37.5939
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 0.905144098101378,
  "phiVv": 204120.0,
  "phiNs": 423375.0301508294,
  "phiNt": 441757.50135385134,
  "phiMsx": 18059232.63830491,
  "phiMsy": 7260640.037342716,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/127x51x3-5rhs/"
}