{
 "designation": "18RND",
 "type": "Round Bar",
 "standard": "AS/NZS 3679.1",
 "mass_kg_m": 2.0,
 "dimensions_mm": {
  "dia": 18.0
 },
 "properties": {
  "A": 254.469,
  "Ix": 5152.9974,
  "Zx": 572.5553,
  "Sx": 972.0,
  "J": 10305.9947,
  "Iy": 5152.9974,
  "Zy": 572.5553,
  "Sy": 972.0,
  "rx": 4.5,
  "ry": 4.5,
  "mass_calc": 1.9976,
  "surface": 0.0565,
  "surface_t": 28.2743
 },
 "design_AS4100": {
  "grade": "300",
  "fy": 300,
  "fu": 440,
  "kf": 1.0,
  "phiNs": 68706.63133400878,
  "phiNt": 68706.63133400878,
  "phiMsx": 231884.8807522796,
  "phiMsy": 231884.8807522796,
  "ab": 0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/round-bar/18rnd/"
}