Grade : X19CrMoNbVN11-1 Number: 1.4913 Classification: Alloy special martensitic creep-resisting steel Density: 7.7 g/cm ? Standard: EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 10088-1: 2005 Stainless steels. List of stainless steels Equivalent grades: Go here Chemical composition % of steel X19CrMoNbVN11-1 (1.4913): EN 10302-2008 C Si Mn Ni P S Cr Mo V N Nb Al B 0.17 - 0.23 max 0.5 0.4 - 0.9 0.2 - 0.6 max 0.025 max 0.015 10 - 11.5 0.5 - 0.8 0.1 - 0.3 0.05 - 0.1 0.25 - 0.55 max 0.02 max 0.0015 Mechanical properties of steel X19CrMoNbVN11-1 (1.4913) Rm - Tensile strength (MPa) (+QT) 900-1050 Rp0.2 0.2% proof strength (MPa) (+QT) 750 KV - Impact energy (J) (+QT) +20° 20 A - Min. elongation at fracture (%) (+QT) 12 Z - Reduction in cross section on fracture (%) (+QT) 40 Brinell hardness (HBW): (+A) 302