EN 10088-3 Grade X1CrNiMoCuN20-18-7 / 1.4547

X1CrNiMoCuN20-18-7 / 1.4547

Steel designation		Chemical composition, % by mass
Steel Name	Steel Number	C	Si	Mn	P max.	S	N	Cr	Cu	Mo	Nb	Ni	Others
X1CrNiMoCuN20-18-7	1.4547	≤ 0,020	≤ 0,70	≤ 1,00	0,030	≤ 0,010	0,18 to 0,25	19,5 to 20,5	0,50 to 1,00	6,0 to 7,0	-	17,5 to 18,5	-

Steel designation		Thickness t or diameter ^b d	Hardness ^c,d	0,2 %-proof strength	1 %-proof strength	Tensile strength^d,e	Elongation after fracture^d,e		Impact energy (ISO-V) ^b		Resistance to intergranular corrosion^f
Steel Name	Steel Number	mm	HB max.	R_p0,2^e MPa*) min.	R _p1,0^c,e MPa*) min.	R _m MPa*)	A % min		KV J min		in the delivery condition	In the sensitized conditiong
							(long.)	(tr.)	(long.)	(tr.)
Special grades
X1CrNiMoCuN20-18-7	1.4547	≤ 160	260	300	340	650 to 850	35	-	100	-	yes	yes
X1CrNiMoCuN20-18-7	1.4547	160 < t ≤ 250	260	300	340	650 to 850	-	30	-	60	yes	yes
^a Solution treatment may be omitted if the conditions for hot working and subsequent cooling are such that the requirements for the mechanical properties of the product and the resistance to Intergranular corrosion as defined in EN ISO 3651-2 are obtained.
^b Width across flats for hexagons.
^c Only for guidance.
^d The maximum HB-values may be raised by 100 HB or the tensile strength value may be raised by 200 MPa and the minimum elongation value may be lowered to 20 % for sections and bars of ≤ 35 mm thickness having a final cold deformation and for hot formed sections and bars of 8 mm thickness.
^e For rods, only the tensile strength values apply.
^f When tested according to EN ISO 3651-2.
^g See NOTE 2 to 6.4.
^h Sensitization treatment of 15 min at 700°C followed by cooling in air.
*) 1MPa = 1 N/mm².