{
 "designation": "273.1x6.4CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 42.1,
 "dimensions_mm": {
  "do": 273.1,
  "t": 6.4
 },
 "properties": {
  "A": 5362.3217,
  "Ix": 47704453.6004,
  "Iy": 47704453.6004,
  "Zx": 349355.2076,
  "Zy": 349355.2076,
  "Sx": 455312.2773,
  "Sy": 455312.2773,
  "J": 95408907.2008,
  "C": 698710.4152,
  "rx": 94.3198,
  "ry": 94.3198,
  "mass_calc": 42.0942,
  "surface": 0.858,
  "surface_t": 20.3793
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 608087.2772146302,
  "phiNs": 1689131.3255961952,
  "phiNt": 1689131.3255961952,
  "phiMsx": 138778970.99016735,
  "phiMsy": 138778970.99016735,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/273-1x6-4chs/"
}