{
 "designation": "323.9x6.4CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 50.1,
 "dimensions_mm": {
  "do": 323.9,
  "t": 6.4
 },
 "properties": {
  "A": 6383.7163,
  "Ix": 80472496.934,
  "Iy": 80472496.934,
  "Zx": 496897.1716,
  "Zy": 496897.1716,
  "Sx": 645247.3813,
  "Sy": 645247.3813,
  "J": 160944993.8681,
  "C": 993794.3431,
  "rx": 112.276,
  "ry": 112.276,
  "mass_calc": 50.1122,
  "surface": 1.0176,
  "surface_t": 20.3106
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 723913.425255513,
  "phiNs": 2010870.6257097584,
  "phiNt": 2010870.6257097584,
  "phiMsx": 189331880.51313362,
  "phiMsy": 189331880.51313362,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/323-9x6-4chs/"
}