{
 "designation": "168.3x4.8CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 19.4,
 "dimensions_mm": {
  "do": 168.3,
  "t": 4.8
 },
 "properties": {
  "A": 2465.5219,
  "Ix": 8245719.2281,
  "Iy": 8245719.2281,
  "Zx": 97988.345,
  "Zy": 97988.345,
  "Sx": 128351.664,
  "Sy": 128351.664,
  "J": 16491438.4562,
  "C": 195976.6899,
  "rx": 57.8309,
  "ry": 57.8309,
  "mass_calc": 19.3543,
  "surface": 0.5287,
  "surface_t": 27.2541
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 279590.18510852614,
  "phiNs": 776639.4030792393,
  "phiNt": 776639.4030792393,
  "phiMsx": 40430774.15999996,
  "phiMsy": 40430774.15999996,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/168-3x4-8chs/"
}