{
 "designation": "168.3x6.4CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 25.6,
 "dimensions_mm": {
  "do": 168.3,
  "t": 6.4
 },
 "properties": {
  "A": 3255.1926,
  "Ix": 10682146.5936,
  "Iy": 10682146.5936,
  "Zx": 126941.7302,
  "Zy": 126941.7302,
  "Sx": 167841.6853,
  "Sy": 167841.6853,
  "J": 21364293.1872,
  "C": 253883.4603,
  "rx": 57.285,
  "ry": 57.285,
  "mass_calc": 25.5533,
  "surface": 0.5287,
  "surface_t": 20.6535
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 369138.84582320455,
  "phiNs": 1025385.6828422348,
  "phiNt": 1025385.6828422348,
  "phiMsx": 52870130.88000003,
  "phiMsy": 52870130.88000003,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/168-3x6-4chs/"
}