Stainless Steel

Chemical Composition
Equivalents
Mechanical properties
Finishes
Tolerances

EN 10088 General applications

EN 10151 for springs

Symbol classification	Numerical	European Standard (EN)		Equivalent	Chemical Composition
Symbol classification	Numerical	General Applications	For springs	AISI	C	Si	Mn	P	S	N	Cr	Cu	Mo	Nb	Ni	Ti	Others
X2CrTi12	1.4512	EN 10088-2	-	409	≤ 0.03	≤ 1	≤ 1	≤ 0.04	≤ 0.015	-	10.50 - 12.50	-	-	-	-	6x(C+N) - 0.65	-
X6Cr17	1.4016	EN 10088-2	EN 10151	430	≤ 0.08	≤ 1	≤ 1	≤ 0.04	≤ 0.015	-	16.00 - 18.00	-	-	-	-	-	-
X2CrTiNb18	1.4509	EN 10088-2	-	441	≤ 0.03	≤ 1	≤ 1	≤ 0.04	≤ 0.015	-	17.50 - 18.50	-	-	3xC+0.30≤Nb≤1.00	-	0.10 - 0.60	-
X30Cr13	1.4028	EN 10088-2	EN 10151	420	0.26-0.35	≤ 1	≤ 1.5	≤ 0.04	≤ 0.015	-	12.00 - 14.00	-	-	-	-	-	-
X7CrNiAl17-7	1.4568	EN 10088-2	EN 10151	631	≤ 0.09	≤ 0.7	≤ 1	≤ 0.04	≤ 0.015	-	16.00 - 18.00	-	-	-	6.50 - 7.80	-	Al: 0.70 - 1.50
X10CrNi18-8	1.4310	EN 10088-2	EN 10151	301	0.05 - 0.15	≤ 2.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	16.00 - 19.00	-	≤ 0.80	-	6.00 - 9.50	-	-
X10CrNi18-8	1.4310 Mo	EN 10088-2	EN 10151	301Mo	0.05 - 0.15	≤ 2.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	16.00 - 19.00	-	≤ 0.80 ¹⁾	-	6.00 - 9.50	-	-
X2CrNi18-9	1.4307	EN 10088-2	-	304L	≤ 0.030	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	17.50 - 19.50	-	-	-	8.00 - 10.00	-	-
X5CrNi18-10	1.4301	EN 10088-2	EN 10151	304	≤ 0.07	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	17.00 - 19.50	-	-	-	8.00 - 10.50	-	-
X6CrNiTi18-10	1.4541	EN 10088-2	-	321	≤ 0.08	≤ 1.00	≤ 2.00	0.045	≤ 0.015	-	17.00 - 19.50	-	-	-	9.00 - 12.00	5xC - 0.70	-
X5CrNiMo17-12-2	1.4401	EN 10088-2	-	316	≤ 0.070	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	16.50 - 18.50	-	2.00 - 2.50	-	10.00 - 13.00	-	-
X5CrNiMoTi17-12 -2	1.4571	EN 10088-2	-	316Ti	≤ 0.08	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.015	-	16.50 - 18.50	-	2.00 - 2.50	-	10.50 - 13.50	5xC - 0.70	-
X2CrNiMo17-12-2	1.4404	EN 10088-2	EN 10151	316L	≤ 0.030	≤ 1.00	≤ 2.00	≤ 0.045	≤ 0.015	≤ 0.11	16.50 - 18.50	-	2.00 - 2.50	-	10.00 - 13.00	-	-
X12CrMnNiN17-7-5	1.4372	EN 10088-2	EN 10151	201	≤ 0.15	≤ 1.00	5.50 - 7.50	≤ 0.045	≤ 0.015	0.05 - 0.25	16.00 - 18.00	-	-	-	3.50 - 5.50	-	-
X12CrMnNiN18-9-5	1.4373	EN 10088-2	-	202	≤ 0.15	≤ 1.00	7.50 - 10.50	≤ 0.045	≤ 0.015	0.05 - 0.25	17.00 - 19.00	-	-	-	4.00 - 6.00	-	-
X2CrMoTi18-2	1.4521	EN 10088	-	444	≤ 0.025	≤ 1	≤ 1	≤ 0.04	≤ 0.015	-	17.00 - 20.00	-	1.80 - 2.50	-	-	-	-
X8CrNi25-21	1.4845	EN 10095	-	310S	≤ 0.1	≤ 1.5	≤ 2	≤ 0.045	≤ 0.015	-	24.00 - 26.00	-	-	-	19.00 - 22.00	-	-

X2CrMoTi18-2 1.4521 and X8CrNi25-21 1.4845 available under a commercial agreement.

1) Min to be agreed. Max ≤ 0.80

Symbol classification	Numerical classification	European Standard (EN)	Approximate international equivalents
Symbol classification	Numerical classification	European Standard (EN)	US (AISI)	Japan (JIS)	China (GB)
X2CrTi12	1.4512	EN 10088-2	409	SUS409L	-
X6Cr17	1.4016	EN 10088-2	430	SUS430	10Cr17
X2CrTiNb18	1.4509	EN 10088-2	441	-	-
X30Cr13	1.4028	EN 10088-2	420	SUS420J1	20Cr13
X7CrNiAl17-7	1.4568	EN 10088-2	631	SUS 631	0Cr17Ni7Al
X10CrNi18-8	1.4310	EN 10088-2	301	SUS 301	1Cr17Ni7
X10CrNi18-8	1.4310 Mo	EN 10088-2	301Mo	-	-
X2CrNi18-9	1.4307	EN 10088-2	304L	SUS304L	-
X5CrNi18-10	1.4301	EN 10088-2	304	SUS 304	0Cr19Ni9
X6CrNiTi18-10	1.4541	EN 10088-2	321	SUS321	0Cr18Ni10Ti 1Cr18Ni11Ti H0Cr20Ni10Ti
X5CrNiMo17-12-2	1.4401	EN 10088-2	316	SUS 316	6Cr17Ni12Mo2
X5CrNiMoTi17-12 -2	1.4571	EN 10088-2	316Ti	SUS316Ti	0Cr18Ni12Mo2Ti 1Cr18Ni12Mo2Ti
X2CrNiMo17-12-2	1.4404	EN 10088-2	316L	SUS316L	0Cr18Ni12Mo2Ti 1Cr18Ni12Mo2Ti
X12CrMnNiN17-7 -5	1.4372	EN 10088-2	201	SUS201	-
X12CrMnNiN18-9 -5	1.4373	EN 10088-2	202	SUS202	-
X2CrMoTi18-2	1.4521	EN 10088	444	-	-
X8CrNi25-21	1.4845	EN 10095	310S	SUS310S	1Cr25Ni20Si2

X2CrMoTi18-2 1.4521 and X8CrNi25-21 1.4845 available under a commercial agreement.

EN 10088-2 annealed state/ EN 10151 hardened state

Martensitic steels

Steel designation							Yield strength Rp_0.2			Elongation at break
Symbol classification	Numerical classification	US (AISI)	State			Hardness	N/mm² min. (leng.)	N/mm² min. (tens.)	Tensile strength Rm N/mm²	A₈₀ mm < 3 mm thick % min (leng. + tens.)	A ≥ 3 mm thick % min. (leng. + tens.)
			Annealed	-	-	235 HV max.	-	-	740 max.	15	15
X30Cr13	1.4028	420	Hardened by cold rolling	+C700	-	270-320 HV	-	-	700 - 850	-	-
				+C850	1/4 Hard		-	-	850 - 1000	-	-

Ferritic steels

Steel designation							Yield strength Rp_0.2			Elongation at break
Symbol classification	Numerical classification	US (AISI)	State			Hardness	N/mm² min. (leng.)	N/mm² min. (tens.)	Tensile strength Rm N/mm²	A₈₀ mm < 3 mm thick % min (leng. + tens.)	A ≥ 3 mm thick % min. (leng. + tens.)
Standardised Types:
X2CrTi12	1.4512	409	Annealed	-	-	-	210	220	380 - 560	25	25
			Annealed	-	-	-	260	280	430 - 600	20	20
X6Cr17	1.4016	430	Hardened by cold rolling	+C700		200 - 300 HV	-	-	700 - 850	2	-
				+C850	1/4 Hard		-	-	850 - 1000	1	-
X2CrMoTi18-2	1.4521	444	Annealed	-	-	-	300	320	420 - 640	20	20
Special types:
X2CrTiNb18	1.4509	441	Annealed	-	-	-	230	250	430 - 630	18	18

AUSTENITIC STEEL

Steel designation						Hardness	Yield strength Rp_0.2		Tensile strength Rm N/mm²	Elongation at break
Symbol classification	Numerical classification	US (AISI)	State			Hardness	N/mm² min. (leng.)	N/mm² min. (tens.)	Tensile strength Rm N/mm²	A₈₀ mm < 3 mm thick % min (leng. + tens.)	A ≥ 3 mm thick % min. (leng. + tens.)
Standardised Types:
			Annealed	-	-	-	250	280	600 - 950	40	40
				+C850	1/4 Hard		-	-	850 - 1000	25	25
				+C1000	1/2 Hard		-	-	1000 - 1150	20	20
				+C1150	3/4 Hard		-	-	1150 - 1300	15	15
X10CrNi18-8	1.4310	301 301Mo	Hardened by cold rolling	+C1300	4/4 Hard	250 - 600 HV	-	-	1300 - 1500	10	10
				+C1500	5/4 Hard		-	-	1500 - 1700	5	5
				+C1700	K1		-	-	1700 - 1900	2	2
				+C1900	K2		-	-	1900 - 2200	1	1
				+C2100	under request
X2CrNi18-9	1.4307	304L	Annealed	-	-	-	220	250	520 - 700	45	45
			Annealed	-	-	-	230	260	540 - 750	45	45
				+C700	-		-	-	700-850	25	25
X5CrNi18-10	1.4301	304		+C850	1/4 Hard		-	-	850-1000	12	12
			Hardened by cold rolling	+C1000	1/2 Hard	220 - 450 HV	-	-	1000-1150	5	5
				+C1150	3/4 Hard		-	-	1150-1300	3	3
				+C1300	4/4 Hard		-	-	1300-1500	1	1
X6CrNiTi18-10	1.4541	321	Annealed	-	-	-	220	250	520-720	40	40
X2CrNiMo17-12-2	1.4404	316L	Annealed	-	-	-	240	270	530 - 680	40	40
X6CrNiMoTi17-12 -2	1.4571	316Ti	Annealed	-	-	-	240	270	540 - 690	40	40
			Annealed	-	-	-	240	270	530 - 680	40	40
				+C700	-	-	-	-	700 - 850	20	20
X5CrNiMo17-12-2	14401	316		+C850	1/4 Hard		-	-	850 - 1000	10	10
			Hardened by cold rolling	+C1000	1/2 Hard	220 - 400 HV	-	-	1000 - 1150	4	4
				+C1150	3/4 Hard		-	-	1150 - 1300	1	1
				+C1300	4/4 Hard		-	-	1300 - 1500	-	-
Special types:
			Annealed	-	-	-	350	380	680 - 880	45	45
				+C850	1/4 Hard		-	-	850 - 1000	25	25
X12CrMnNiN17-7 -5	1.4372	201		+C1000	1/2 Hard		-	-	1000 - 1150	13	13
			Hardened by cold rolling	+C1150	3/4 Hard	200 - 500 HV	-	-	1150 - 1300	5	5
				+C1300	4/4 Hard		-	-	1300 - 1500	2	2
				+C1500	5/4 Hard		-	-	1300 - 1500	1	1
X12CrMnNiN18-9 -5	1.4373	202	Annealed	-	-	-	340	370	680 - 880	45	45

PRECIPITATION-HARDENED STEEL

Steel designation						Hardness	Yield strength Rp_0.2		Tensile strength Rm N/mm²	Elongation at break
Symbol classification	Numerical classification	US (AISI)	State			Hardness	N/mm² min. (leng.)	N/mm² min. (tens.)	Tensile strength Rm N/mm²	A₈₀ mm < 3 mm thick % min (leng. + tens.)	A ≥ 3 mm thick % min. (leng. + tens.)
			Annealed	-	-	-	-	-	≤ 1030	19	19
				+C1000	1/2 Hard	300 - 520 HV ¹⁾	-	-	1000 - 1150	-	-
X7CrNiAl17-7	1.4568	631		+C1150	3/4 Hard		-	-	1150 - 1300	-	-
			Hardened by cold rolling	+C1300	4/4 Hard		-	-	1300 - 1500	-	-
				+C1500	5/4 Hard		-	-	1500 - 1700	-	-
				+C1700	K1		-	-	1700 - 1900	-	-

1) Approximate value.

REFRACTORY STAINLESS STEEL

Steel designation						Hardness	Yield strength Rp_0.8		Tensile strength Rm N/mm²	Elongation at break
Symbol classification	Numerical classification	US (AISI)	State			Hardness	N/mm² min. (leng.)	N/mm² min. (tens.)	Tensile strength Rm N/mm²	A₈₀ mm < 3 mm thick % min (leng. + tens.)	A ≥ 3 mm thick % min. (leng. + tens.)
X8CrNi25-21	1.4845	310S	Annealed	-	-	192 HB max.	210	-	500 - 700	33	-

X2CrMoTi18-2 1.4521 and X8CrNi25-21 1.4845 available under a commercial agreement.

Charts for guidance purposes for STABILISATION (TEMPERING) CONDITIONS

TYPE OF PROCESS ROUTE AND SURFACE FINISH OF PLATES AND COILS EN 10088-2 ¹⁾

COLD ROLLING
Abbreviation	Type of process route	Surface finish	Remarks	AISI
2H	Hardened by cold forming	Bright	Hardened by cold forming, to obtain the highest level of mechanical strength.	TR
2D	Cold-rolled, heat treated, pickled	Smooth	Finish with good ductility, but not as smooth as 2B or 2R.	2D
2B	Cold-rolled, heat treated, pickled and skin passed	Smoother than 2D	Normal finish for most steels. Ensures good corrosion resistance, smoothness and flatness. Also common for subsequent processes. Skin passing can be replaced by tension levelling.	2B
2R	Cold-rolled, bright annealed	Smooth, bright and reflective	Smoother and brighter finish than 2B. Also common for subsequent processing.	BA
2G	Ground		Can be specified based on the grain size of the grinding wheel or surface roughness. It has a unidirectional texture, not very reflective.	3
2J	Brushed or polished matt	Smother than when ground 1)	The brushing grade, type of abrasive belt and surface roughness can be specified. It has a unidirectional texture, not very reflective.	6
1D	Hot rolled, heat treated, pickled	Free of scale	Normal finish for most steels in order to ensure good corrosion resistance; A finish that is also common for products that are going to undergo subsequent processing. Grinding marks permitted. Coarser finish than 2D or 2B.	1
2E	Cold-rolled, heat treated, mechanically descaled	Rough and matt	Generally applied to steel with pickling-resistant scale. Can be followed by pickling.	1
2K	Gloss polished	1)	Additional specific requirements to a "J" type finish, in order to achieve adequate corrosion resistance in marine environments and for external architectural applications. They are finishes with a transverse roughness of Ra<0.5µm and with a clean surface appearance.	4

1) Within the description of each finish, the properties may vary and further details may be necessary to correctly specify the desired finish (for example, the abrasive grain or surface roughness).

Tinned or nickel plated strips can be supplied under a commercial agreement.

AVERAGE SURFACE ROUGHNESS EN 10151:2002

The quality of the surface of a strip is characterised by the following approximate average surface roughness values:

Ra < 0.3 µm for tensile strength levels of +C1150 and above.
Ra < 0.5 µm for tensile strength levels ranging from +C700 to +C1000.

THICKNESS TOLERANCES

A) Thickness tolerances specified for cold-rolled strips and strips in cut lengths obtained from precision strips.

Specified thickness t	Thickness tolerance specified according to EN ISO 9445 for a nominal width of
	w < 125			125 ≤ w < 250			250 ≤ w < 600
	Normal	Fine (F)	Precision (P)	Normal	Fine (F)	Precision (P)	Normal	Fine (F)	Precision (P)
0.05 ≤ t < 0.10	± 0.10 t	± 0.06 t	± 0.04 t	± 0.12 t	± 0.10 t	± 0.08 t	± 0.15 t	± 0.10 t	± 0.08 t
0.10 ≤ t < 0.15	± 0.010	± 0.008	± 0.006	± 0.015	± 0.012	± 0.008	± 0.020	± 0.015	± 0.010
0.15 ≤ t < 0.20	± 0.015	± 0.010	± 0.008	± 0.020	± 0.012	± 0.010	± 0.025	± 0.015	± 0.012
0.20 ≤ t < 0.25	± 0.015	± 0.012	± 0.008	± 0.020	± 0.015	± 0.010	± 0.025	± 0.020	± 0.012
0.25 ≤ t < 0.30	± 0.017	± 0.012	± 0.009	± 0.025	± 0.015	± 0.012	± 0.030	± 0.020	± 0.015
0.30 ≤ t < 0.40	± 0.020	± 0.015	± 0.010	± 0.025	± 0.020	± 0.012	± 0.030	± 0.025	± 0.015
0.40 ≤ t < 0.50	± 0.025	± 0.020	± 0.012	± 0.030	± 0.020	± 0.015	± 0.035	± 0.025	± 0.018
0.50 ≤ t < 0.60	± 0.030	± 0.020	± 0.014	± 0.030	± 0.025	± 0.015	± 0.040	± 0.030	± 0.020
0.60 ≤ t < 0.80	± 0.030	± 0.025	± 0.015	± 0.035	± 0.030	± 0.018	± 0.040	± 0.035	± 0.025
0.80 ≤ t < 1.00	± 0.030	± 0.025	± 0.018	± 0.040	± 0.030	± 0.020	± 0.050	± 0.035	± 0.025
1.00 ≤ t < 1.20	± 0.035	± 0.030	± 0.020	± 0.045	± 0.035	± 0.025	± 0.050	± 0.040	± 0.030
1.20 ≤ t < 1.50	± 0.040	± 0.030	± 0.020	± 0.050	± 0.035	± 0.025	± 0.060	± 0.045	± 0.030
1.50 ≤ t < 2.00	± 0.050	± 0.035	± 0.025	± 0.060	± 0.040	± 0.030	± 0.070	± 0.050	± 0.035
2.00 ≤ t < 2.50	± 0.050	± 0.035	± 0.025	± 0.070	± 0.045	± 0.030	± 0.080	± 0.060	± 0.040
2.50 ≤ t ≤ 3.00	± 0.060	± 0.045	± 0.030	± 0.070	± 0.050	± 0.035	± 0.090	± 0.070	± 0.045

Measurements in mm.

B) Thickness tolerances for strips cut from standard material.

Nominal thickness t	Normal tolerances for nominal width w		Close tolerances (S) for a nominal width w
Nominal thickness t	w ≤ 1000	1000 < w ≤ 1300	w ≤ 1000	1000 < w ≤ 1300
t < 0.30	± 0.030	-	± 0.020	-
0.30 ≤ t < 0.50	± 0.040	± 0.040	± 0.025	± 0.030
0.50 ≤ t < 0.60	± 0.045	± 0.050	± 0.030	± 0.035
0.60 ≤ t < 0.80	± 0.050	± 0.050	± 0.035	± 0.040
0.80 ≤ t < 1.00	± 0.055	± 0.060	± 0.040	± 0.045
1.00 ≤ t < 1.20	± 0.060	± 0.070	± 0.045	± 0.045
1.20 ≤ t < 1.50	± 0.070	± 0.080	± 0.050	± 0.055
1.50 ≤ t < 2.00	± 0.080	± 0.090	± 0.055	± 0.060
2.00 ≤ t < 2.50	± 0.090	± 0.10	-	-
2.50 ≤ t ≤ 3.00	± 0.11	± 0.12	-	-
3.00 ≤ t ≤ 4.00	± 0.13	± 0.14	-	-
4.00 ≤ t ≤ 5.00	± 0.14	± 0.15	-	-

Measurements in mm.

WIDTH TOLERANCES

Width tolerances for cold-rolled strips and strips in cut lengths obtained from these strips.

Specified thickness t	Standard slitting tolerances for Metalle Schmidt ¹⁾				Specified width w according to EN ISO 9445¹⁾
	3-15	15-50	50-150	>150	w ≤ 40			40 < w ≤ 125			125 < w ≤ 250			250 < w ≤ 600
	3-15	15-50	50-150	>150	Normal	Fine (F)	Precision (P)	Normal	Fine (F)	Precision (P)	Normal	Fine (F)	Precision (P)	Normal	Fine (F)	Precision (P)
t < 0,25	0;+0,15	0;+0,15	0;+0,15	0;+0,2	0;+0,17	0;+0,13	0;+0,10	0;+0,20	0;+0,15	0;+0,12	0;+0,25	0;+0,20	0;+0,15	0;+0,50	0;+0,50	0;+0,40
0,25 ≤ t < 0,40	0;+0,15	0;+0,15	0;+0,15	0;+0,2	0;+0,20	0;+0,15	0;+0,12	0;+0,25	0;+0,20	0;+0,15	0;+0,30	0;+0,22	0;+0,17	0;+0,60	0;+0,50	0;+0,40
0,40 ≤ t < 0,50	0;+0,17	0;+0,18	0;+0,2	0;+0,24	0;+0,20	0;+0,15	0;+0,12	0;+0,25	0;+0,22	0;+0,15	0;+0,30	0;+0,22	0;+0,17	0;+0,60	0;+0,50	0;+0,40
0,50 ≤ t < 1	0;+0,17²⁾	0;+0,18²⁾	0;+0,20 ²⁾	0;+0,24²⁾	0;+0,25	0;+0,22	0;+0,15	0;+0,25	0;+0,22	0;+0,17	0;+0,40	0;+0,25	0;+0,20	0;+0,70	0;+0,60	0;+0,50
1 ≤ t < 1,50	0;+0,20 ³⁾	0;+0,2 ³⁾	0;+0,20³⁾	0;+0,3³⁾	0;+0,25	0;+0,22	0;+0,15	0;+0,30	0;+0,25	0;+0,17	0;+0,50	0;+0,30	0;+0,22	0;+1,0	0;+0,70	0;+0,60
1,50 ≤ t < 2,50	As per request	0;+0,26⁴⁾	0;+0,30⁴⁾	0;+0,32⁴⁾	-	-	-	0;+0,40	0;+0,25	0;+0,20	0;+0,60	0;+0,40	0;+0,25	0;+1,0	0;+0,80	0;+0,60
2,5 ≤ t ≤ 3	As per request	As per request	0;+0,32	0;+0,35	-	-	-	0;+0,50	0;+0,30	0;+0,25	0;+0,60	0;+0,40	0;+0,25	0;+1,2	0;+1,0	0;+ 0,90
3 < t ≤ 5	As per request	As per request	0;+0,32	0;+0,35	-	-	-	-	-	-	-	-	-	-	-	-

Measurements in mm.

1) Other, closer dimensional tolerances are possible under a commercial agreement.
2) Including the value t=1
3) Including the value t=1,5
4) Including the value t=2,5
5) Subject to an agreement, the tolerance can be equal in ± or all -. In both cases, the total tolerance range must be as shown in the table.

EDGE CAMBER TOLERANCES

Nominal width (W)	Closer edge curve tolerances possible under a commercial agreement.		Edge curve tolerances ¹⁾for average lengths of
	Maximum deviation 2000 mm Thickness (t)		Maximum deviation 2000 mm Thickness (t)


	t ≤ 1.20 mm	t > 1.20 mm	Normal	Close ( R )
3 ≤ W < 6	10,00	15,00	-	-
6 < W ≤ 10	8,00	12,00	-	-
10 < W ≤ 20	4,00	6,00	16 ²⁾	6
20 < W < 25	2,00	4,00	16	6
25 ≤ W < 40	2,00	4,00	12	5
40 ≤ W < 125	2,00	4,00	8	4
125 ≤ W < 350	2,00	4,00	6	3
350 ≤ W < 600	-	-	-	-

Measurements in mm.
1) Edge curve tolerances for cold-rolled strips and for strips in cut lengths obtained from cold-rolled strips according to EN ISO 9445.
2) For nominal widths of 10mm included.

* The data contained in this catalogue are for information purposes only and are not under any circumstances, contractual supply conditions. Errors and omissions excepted.

Strip

Stainless Steel