1.4901

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1.4901 is a ferritic-martensitic (9 % chromium, 1.75 % tungsten, 0.5 % molybdenum) steel micro-alloyed with vanadium and niobium, and has controlled boron and nitrogen contents 

Chemical composition %   of   steel   (1.4901):   EN 10216-2-2014
C Si Mn Ni P S Cr Mo W V N Nb Ti Al Zr B
0.07 - 0.13 max   0.5 0.3 - 0.6 max   0.4 max   0.02 max   0.01 8.5 - 9.5 0.3 - 0.6 1.5 - 2 0.15 - 0.25 0.03 - 0.07 0.04 - 0.09 max   0.01 max   0.02 max   0.01 0.001 - 0.006


Mechanical properties of   steel    (1.4901)

Rm - Tensile strength (MPa) (+NT) 620-850


Rp0.2 0.2% proof strength (MPa) (+NT) 440


KV - Impact energy (J) longitud., (+NT) +20°
40
KV - Impact energy (J) transverse, (+NT) +20°
27


A - Min. elongation at fracture (%) longitud., (+NT) 19
A - Min. elongation at fracture (%) transverse, (+NT) 17



1.4901