# M. Levy, Handbook of Elastic Properties of Solids, Liquids, and Gases (2001)
# C. Zambaldi, "Orientation informed nanoindentation of a-titanium: Indentation pileup in hexagonal metals deforming by prismatic slip", J. Mater. Res., Vol. 27, No. 1, Jan 14, 2012
Ti-alpha:
  lattice: hP
  c/a: 1.587
  mechanics:
    elasticity: {C_11: 160.0e9, C_12: 90.0e9, C_13: 211.1e9, C_33: 181.7e9, C_44: 46.5e9, type: hooke}
    plasticity:
      N_sl: [3, 3, 0, 6]
      a_sl: 2.0
      dot_gamma_0_sl: 0.001
      h_0_sl_sl: 15e6
      h_sl_sl: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
      n_sl: 20
      output: [gamma_sl]
      type: phenopowerlaw
      xi_0_sl: [349.3e6, 150e6, 0, 1107.9e6]
      xi_inf_sl: [568.6e6, 1502.2e6, 0, 3420.1e6]