EN 10088-3 Grade X2CrTiNb18 / 1.4509

X2CrTiNb18 / 1.4509

Chemical Composition

Steel designation Chemical composition, % by mass
Steel Name Steel Number C max. Si max. Mn max P max. S N max Cr Mo Ni Ti Others
X2CrTiNb18 1.4509 0,030 1,00 1,00 0,040 ≤ 0,015 - 17,5 to 18,5 - - 0,10 to 0,60 Nb:[(3xC)+0,30] to 1,00

Mechanical Properties

Steel designation Thickness t or diameter c d 0,2 %-proof strength Tensile strength Elongation
after fracture
Steel Name Steel Number mm Rp0,2
MPa*)
min.		 R m
MPa*)		 A5d
%
min.
(long.)
Special grades
X2CrTiNb18 1.4509 ≤ 10e 320 500 to 750 8
10 < t ≤ 16 300 480 to 750 10
16 < t ≤ 40 240 400 to 700 15
40 < t ≤ 50 240 400 to 700 15
a Including cut lengths from wire.
b Initial annealing treatment may be omitted if the conditions for previous hot working and subsequent cooling have been such that the requirements for the final mechanical properties of the product and the resistance to intergranular corrosion as defined in EN ISO 3651-2 are obtained.
c Width across flats for hexagons.
d Elongation A5 is valid only for dimensions of 5 mm and above. For smaller diameters, the minimum elongation has to be agreed upon at the time of enquiry and order.
e  In the range 1 mm ≤ d < 5 mm valid only for rounds. The mechanical properties of non round bars with thicknesses < 5 mm have to be agreed at the time of enquiry and order.
*)  1MPa = 1 N/mm².