EN 10088-3 Ambient Temperature Mechanical Properties of Austenitic-Ferritic Duplex Stainless Steel Bright Bars

EN 10088-3 was originally published in 1995. The second, current version, EN 10088-3:2005, has superseded EN 10088-3:1995, which was withdrawn by BSi on 20th June 2005.

The tables shown here only have the 2005 tensile strength properties ranges of the austenitic-ferritic duplex steel.

This article is specifically for bright products which were introduced in the 2005 edition.

The austenitic-ferritic steel are in the annealed condition. The annealing 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.

Designation		Mechanical properties min unless stated
Steel name	Steel number	Max Thickness mm 1)	Proof strength Rp0.2N/mm2	Tensile strength RmN/mm2	Elongation A2) %
Standard Grades
X3CrNiMoN27-5-2	1.4460/329	103)	610	770/1030	12
		10<t<16	560	770/1030	12
		16<t<40	460	620/950	15
		40<t<63	460	620/950	15
		63<t<160	460	620/880	20
X2CrNiMoN22-5-3	1.4462 S32205	103)	650	850/1150	12
		10<t<16	650	850/1100	12
		16<t<40	450	650/1000	15
		40<t<63	450	650/1000	15
		63<t<160	450	650/880	25
Special Grades
X2CrNiMoCuN25-6-3	1.4507 S32550	103)	4)	4)	4)
		10<t<16	4)	4)	4)
		16<t<40	500	700/900	25
		40<t<63	500	700/900	25
		63<t<160	500	700/900	25

Designation		Mechanical properties min unless stated
Steel name	Steel number	Max tHickness d mm	Proof strength Rp0.22) N/mm2	Tensile strength Rm2) N/mm2	Elongation A2) %	Max hardness1)HB
Austenitic-ferritic stainless steel standard grades
X3CrNiMoN27-5-2	1.4460	160	450	620/880	20	260
X2CrNiMoN22-5-3	1.4462	160	450	650/880	25	270
Austenitic-ferritic stainless steel special grades
X2CrNiN23-4	1.4362/S32304	160	400	600/830	25	260
X2CrNiMoN29-7-2	1.4477	10	650	800/1050	25	310
X2CrNiMoN29-7-2	1.4477	10<d<160	550	750/1000	25	310
X2CrNiMoCuN25-6-3	1.4507/S32550	160	500	700/900	25	270
X2CrNiMoN25-7-4	1.4410/S32750	160	530	730/930	25	290
X2CrNiMoCuWN25-7-4	1.4501/S32760	160	530	730/930	25	290
X2CrNiMoSi18-5-3	1.4424	50	450	700/900	25	260
X2CrNiMoSi18-5-3	1.4424	50<d<160	400	680/900	25	260

Note

Width across flats for hexagons.
Elongation is valid only for dimensions of 5mm and above. For smaller diameters, the minimum elongation has to agreed upon at the time of the enquiry and order
In the range 1mm<t<5mm valid only for rounds. The mechanical properties of non round bars with thicknesses <5mm have to be agreed at the time of the enquiry and order
To be agreed upon at the time of the enquiry and order