EN 10088-2 Ambient Temperature Mechanical Properties of Austenitic Stainless Steel

EN 10088-2 Mechanical Properties of Austenitic Stainless Steel

EN 10088-2 is the material standard for stainless steel sheet, plate and strip for general purposes. This article gives the 0.2% and 1.0% proof strength, tensile strength and elongation of the 40 austenitic grades specified. The standard also specifies includes impact properties and resistance to intergranular corrosion acceptance criteria. For reasons of space, these are omitted from the tables shown here.

EN 10088-2 was originally published in 1995. The second, current version, EN 10088-2:2005, has superseded EN 10088-2:1995, which was withdrawn by BSi on 20th June 2005.

The tables shown here only have the 2005 tensile stregnth properties ranges of the austenitic steel. Seven new 'special' austenitic grades, 1.4315, 1.4319, 1.4369, 1.4565, 1.4597, 4652 and 1.4659 have been added.

The maximum thickness ranges for the specification of mechanical properties have been extended for strip products.
Cold rolled strip, C has been increased from 6 to 8mm max. Hot rolled strip, H has been increased from 12 to 13.5mm max

The only changes to tensile properties are increases of maximum tensile strength for grades 304L 1.4307 and 1.4306. These have been increased from 650 or 670, depending on product form, to 700 N/mm2.

Designation		Mechanical properties min unless stated
Steel name	Steel number	Product		Proof strength		Tensile strength Rm N/mm2	Elongation %
Steel name	Steel number	Form2)	Max thickness mm	Rp0.23),4) N/mm2	Rp1.03),4) N/mm2	Tensile strength Rm N/mm2	Elongation %
Austenitic stainless steels in the solution annealed condition1) - standard grades
X10CrNi18-8	1.4310	C	8	250	280	600/950	40
X2CrNiN18-7	1.4318	C	8	350	380	650/850	40
		H	13.5	330	370	650/850	40
		P	75	330	370	630/830	45
X2CrNi18-9	1.4307	C	8	220	250	520/700	45
		H	13.5	200	240	520/700	45
		P	75	200	240	500/700	45
X2CrNi19-11	1.4306	C	8	220	250	520/700	45
		H	13.5	200	240	520/700	45
		P	75	200	240	500/700	45
X2CrNiN18-10	1.4311	C	8	290	320	550/750	40
		H	13.5	270	310	550/750	40
		P	75	270	310	550/750	40
X5CrNi18-10	1.4301	C	8	230	260	540/750	45
		H	13.5	210	250	520/720	45
		P	75	210	250	520/720	45
X8CrNiS18-9	1.4305	P	75	190	230	500/700	35
X6CrNiTi18-10	1.4541	C	8	220	250	520/720	40
		H	13.5	200	240	520/720	40
		P	75	200	240	500/700	40
X4CrNi18-12	1.4303	C	8	220	250	500/650	45
X2CrNiMo17-12-2	1.4404	C	8	240	270	530/680	40
		H	13.5	220	260	530/680	40
		P	75	220	260	520/670	45
X2CrNiMoN17-11-2	1.4406	C	8	300	330	580/780	40
		H	13.5	280	320	580/780	40
		P	75	280	320	580/780	40
X5CrNiMo17-12-2	1.4401	C	8	240	270	530/680	40
		H	13.5	220	260	530/680	40
		P	75	220	260	520/670	45
X6CrNiMoTi17-12-2	1.4571	C	8	240	270	540/690	40
		H	13.5	220	260	540/690	40
		P	75	220	260	520/670	40
X2CrNiMo17-12-3	1.4432	C	8	240	270	550/700	40
		H	13.5	220	260	550/700	40
		P	75	220	260	520/670	45
X2CrNiMo18-14-3	1.4435	C	8	240	270	550/700	40
		H	13.5	220	260	550/700	40
		P	75	220	260	520/670	45
X2CrNiMoN17-13-5	1.4439	C	8	290	320	580/780	35
		H	13.5	270	310	580/780	35
		P	75	270	310	580/780	40
X1NiCrMoCu25-20-5	1.4539	C	8	240	270	530/730	35
		H	13.5	220	260	530/730	35
		P	75	220	260	520/720	35
Austenitic stainless steels in the solution annealed condition1) - special grades
X5CrNi17-7	1.4319	C	3	230	260	550/750	45
X5CrNi17-7	1.4319	H	6	230	260	550/750	45
X5CrNiN19-9	1.4315	C	8	290	330	500/720	40
		H	13.5	270	310	500/750	40
		P	75	270	310	500/750	40
X1CrNi25-21	1.4335	P	75	200	240	470/670	40
X6CrNiNb18-10	1.4550	C	8	220	250	520/720	40
		H	13.5	200	240	520/720	40
		P	75	200	240	500/700	40
X1CrNiMn25-22-2	1.4466	P	75	250	290	540/740	40
X6CrNiMoN17-13-2	1.4580	P	75	220	260	520/720	40
X2CrNiMoN17-13-3	1.4429	C	8	300	330	580/780	35
		H	13.5	280	320	580/780	35
		P	75	280	320	580/780	40
X3CrNiMo17-13-3	1.4436	C	8	240	270	550/700	40
		H	13.5	220	260	550/700	40
		P	75	220	260	530/730	40
X2CrNiMoN18-12-4	1.4434	C	8	290	320	570/770	35
		H	13.5	270	310	570/770	35
		P	75	270	310	540/740	40
X2CrNiMo18-15-4	1.4438	C	8	240	270	550/700	35
		H	13.5	220	260	550/700	35
		P	75	220	260	520/720	40
X1CrNiMoCuN24-22-8	1.4652	C	8	430	470	750/1000	40
		H	13.5	430	470	750/1000	40
		P	75	430	470	750/1000	40
X1CrNiSi18-15-4	1.4361	P	75	220	260	530/730	40
X11CrNiMnN19-8-6	1.4369	C	4	340	370	750/950	35
X12CrMnNiN17-7-5	1.4372	C	8	350	380	750/950	45
		H	13.5	330	370	750/950	45
		P	75	330	370	750/950	40
X2CrMnNiN17-7-5	1.4371	C	8	300	330	650/850	45
		H	13.5	280	320	650/850	45
		P	75	280	320	630/830	35
X12CrMnNiN18-9-5	1.4373	C	8	340	370	680/880	45
		H	13.5	320	360	680/880	45
		P	75	320	360	600/800	35
X8CrMnCuNB17-8-3	1.4597	C	8	300	330	580/780	40
X8CrMnCuNB17-8-3	1.4597	H	13.5	300	330	580/780	40
X1NiCrMoCu31-27-4	1.4563	P	75	220	260	500/700	40
X1CrNiMoCuN25-25-5	1.4537	P	75	290	330	600/800	40
X1CrNiMoCuN20-18-7	1.4547	C	8	320	350	650/850	35
		H	13.5	300	340	650/850	35
		P	75	300	340	650/850	40
X1CrNiMoCuNW24-22-6	1.4659	P	75	420	460	800/1000	40
X1NiCrMoCuN25-20-7	1.4529	P	75	300	340	650/850	40
X2CrNiMnMoN25-18-6-5	1.4565	C	8	420	460	800/950	30
		H	10	420	460	800/950	30
		P	40	420	460	800/950	30

The 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.

C= Cold rolled strip; H= hot rolled strip; P= hot rolled plate.

If, in the case of strip in rolling widths<300mm, longitudinal test pieces are taken, the minimum values are reduced as follow:

proof strength: minus 15N/mm2

gauge

elongation for proportional gauge length: minus 2%

For continuously hot rolled products, 20N/mm2 higher minimum values of Rp0.2 and 10N/mm2higher minimum values of Rp1.0 may be agreed at the time of enquiry and order.

The values apply for test pieces with a gauge length of 80mm and a width of 20mm. Test pieces with a gauge length of 50mm and a width of 12.5mm can also be used.

The values apply for test pieces with a gauge length of 5.65 So0.5

EN 10088-2 Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes