{
  "name": "Spider silk against steel: strength per density, breaking length and silk-to-steel ratios",
  "desc": "Computed for this page from the cited tables: strength per density and breaking length of Araneus dragline, high-tensile steel and Kevlar 49, and the silk-to-steel ratios at the same thickness, at the same weight and for toughness, one row per quantity.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Ants, Cells & Atoms",
  "url": "https://antscellsandatoms.com/insects/spider-silk/",
  "from": [
    "media/spider-silk-vs-steel.csv (rows m1–m3, m5, m6, m8, m11)",
    "CODATA 2022 standard acceleration of gravity, 9.80665 m/s2 (exact)"
  ],
  "how": "Compiled by Ants, Cells & Atoms from the data listed",
  "data_by": [
    "Fraternali F et al. 2020, Nanomaterials 10(8):1510, Table 1 (citing Omenetto and Kaplan 2010, and Elices et al. 2005 for the Nephila clavipes row), CC BY 4.0, https://doi.org/10.3390/nano10081510, retrieved 2026-10-25",
    "Brough HA, Cheneler D, Hardy JG 2024, Biomacromolecules 25(11):6987-7014, Table 1, CC BY 4.0, https://doi.org/10.1021/acs.biomac.4c01122, retrieved 2026-10-25",
    "Agnarsson I, Kuntner M, Blackledge TA 2010, PLoS ONE 5(9):e11234, CC BY 4.0, https://doi.org/10.1371/journal.pone.0011234, retrieved 2026-10-25",
    "Standard acceleration of gravity, CODATA 2022, https://physics.nist.gov/cgi-bin/cuu/Value?gn, retrieved 2026-10-25",
    "All values computed for this page, computed 2026-10-25"
  ]
}