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20CrMnTiH 
		  Details
           20CrMnTiHstandard£ºGB/T 3077-1999
¡ñChemical composition£º
C£º0.17¡«0.23 Si£º0.17¡«0.37 Mn£º0.80¡«1.10 Cr£º1.00¡«1.30
S£º¡Ü0.035
P£º¡Ü0.035
Cr£º1.00¡«1.30
Ni£º¡Ü0.030
Cu£º¡Ü0.030
Ti£º0.04¡«0.10
¡ñmechanical properties£º
            tensile strength  ¦Òb (MPa)£º¡Ý1080(110) 
            yield strength ¦Òs (MPa))£º¡Ý835(85) 
            extensibility  ¦Ä5 (£¥))£º¡Ý10 
            reduction of area  ¦× (£¥))£º¡Ý45 
            notched bar impact strength  ¦Ákv (J/cm2))£º¡Ý69(7)
            rigidity   £º¡Ü217HB