Properties

Indaten^® 355 is a range of steels with improved resistance to atmospheric corrosion that meet the requirements of the EN 10025-5:2004 standard. These grades are fine-grain, high-strength structural steels that have been optimised to give improved processing and in-service performance.

The grades as per EN 10025-5 can be supplied:

Without any special rolling and/or heat treatment requirements. The abbreviated designation of this delivery condition is +AR.
Following a rolling process in which final forming is carried out within a certain temperature range, producing a material in a condition equivalent to that obtained after normalising, with the result that the specified mechanical properties values are conserved even after normalising treatment. The abbreviated designation of this delivery condition is +N.

Furthermore, option 11c of EN 10025-5 is also available (sheet, plate, strip, wide flats and flats (width < 150 mm) with a nominal thickness ≤ 20 mm shall be suitable for flanging without cracking).

Advantages

With their characteristic colour, Indaten^® 355 steels are used in architectural projects either to harmonise with the environment or to create a pleasing contrast with other materials, such as stainless steel. When used uncoated and exposed to bad weather, an oxide layer develops on the steel surface, forming a purplish-brown, finely grained patina that bonds very strongly to the steel and protects it. If the patina is damaged, the steel re-oxidises, thus repairing the patina and maintaining the protective barrier. Indaten^® 355 can also be coated (paint, metallic coatings etc). In the case of coated parts, the protective layer prevents rust propagation under the paint layer.

Experience has shown that the adhesion of organic coatings on Indaten^® 355 is superior to bonding on other carbon steel grades.

Applications

Indaten^® 355 has a wide range of applications: architecture, sculpture, engineering structures, smokestacks, freight wagons, silos, containers and pylons. When used uncoated, no maintenance is required and the material will not deteriorate through corrosion.

The effectiveness of the corrosion protection largely depends on the speed of patina formation. For optimum patina formation, Indaten^® 355 can be used in a non-confined environment, even in the presence of sulphuric fumes. However, it is strongly recommended not to expose Indaten^® 355 to condensation or repeated soiling, particularly in environments containing free chlorine.

Since 1 July 2013, the Construction Products Regulation (Regulation (EU) No. 305/2011 – CPR) has required that CE marking be affixed to all products delivered in accordance with a harmonised standard (e.g. EN 10025). This CE marking guarantees, for the uses defined in the standard, the properties described in the declaration of performance submitted by the manufacturer.

All of the steels in this data sheet comply with this Regulation.

The corresponding declarations of performance are available on our website at:

http://dop.arcelormittal.net/index.php

Weldability

Indaten^® 355 has excellent weldability with all the usual welding processes thanks to its low carbon content and fine-grained structure.

Shielded metal arc welding (process no. 111, SMAW)

Supplier	Reference	EN ISO	AWS
Esab	OK 73.08*	2560-A / E 46 5 Z B 32	A5.5 / E8018-G
Esab	OK 48.08*	2560-A / E 42 4 B 32 H5	A5.1 / E7018
Lincoln Electric	Conarc 55CT SRP*	499 / E 46 5 Mn1Ni B 32 H5	A5.5 / E8018-W2-H4R
	Conarc 60G**	757 / E 55 4 Z B 32 H5	A5.5 / E9018M-H4
	Conarc 70G**	757 / E 55 4 1NiMo B 32 H5	A5.5 / E9018-G-H4
S.A.F. Air Liquide	Safer CU 56**	499 / E 464 Z B 32 H5	A5.5 / E8018-G
	Safer NF 52**	499 / E 424 B 54 H5	A5.5 / E7028
	Safer NF 52**	499 / E 423 B 74 H5	A5.5 / E7028
	Safer NF 510**	499 / E 423 B 32 H5	A5.5 / E7018
Thyssen	SH Patinax KB**	499 / E 38 3 Z 1 NiCu B 42	A5.5 / E7015-G

* Specific electrode

** Specially adapted electrode

Submerged arc welding (process no. 21, SAW)

The filler materials to be used are the same as those recommended for welding steels with the same mechanical properties. As SAW involves strong inherent dilution, the welds will develop a patina.
The mechanical properties obtained in fusion zones meet the normal mechanical property requirements for the base metal.

Supplier	Reference	EN ISO	AWS
Esab	Fil Autrod 13.36*	756 / S2Ni1Cu	A5.23 / EG
Esab	OK Flux 10.71 and 10.81 to 10.83*
Lincoln Electric	Fil LNS 163*
	Flux P230*	760 / S A AB 1 67 AC H5
	Fil L60**	756 / S1	A5.17 / EL12
	Flux 780**	760 / S A AR/AB 1 78 AC H5
	Fil L61**	S2Si	A5.17 / EM12K
	Flux 860**	760 / S A AB 1 56 AC H5
S.A.F. Air Liquide	Fil AS 26**	756 / S1	A5.17 / EL12
	Flux AS 50**	756 / SF 35 0 MS 1 S 1	A5.17 / F6-A0-EL12
	Fil AS 35**	756 / S2	A5.17 / EM12K
	Flux AS 50**	756 / SF 38 0 MS 1 S 2	A5.17 / F7-A0-EM12K
Thyssen	Union Patinax U*	756 / S 42 2 FB S0	A5.23 / F7A2-EG-G
Thyssen	Flux UV 420 TT / UV 420 TT-LH*	760 / SA FB 1 65 DC / SA FB 1 65 DC H5

* Specific welding wire/flux couple

** Specially adapted welding wire/flux couple

Gas metal-arc welding (process no. 135, GMAW)

The thin wires used for equivalent carbon steel grades can also be used for Indaten^® 355 steels; copper-plated wires deposit more copper on the surface of the welded zone, which contributes to the development of a patina on the welds. The cored wires to be used are also the same as those used for the equivalent carbon-manganese steel grades.

Supplier	Reference	EN ISO	AWS
Esab	OK Autrod 12.51**	440 / G3Si1	A5.18 / ER70S-6
Esab	OK AristoRod 13.29**	12534 / GMn3Ni1CrMo	A5.28 / ER110S-G
Lincoln Electric	LNM 28*	12070 / G465MG3Ni1	A5.28 / ER80S-G
Lincoln Electric	LNM Ni1**		A5.28 / ER80S-Ni1
S.A.F. Air Liquide	Nertalic 70 A**	440 / G3Si1	A5.18 / ER70S-6
Thyssen	Union Patinax*	440 / G423CGO	A5.18 / ER70S-G

* Specific welding wire

** Specially adapted welding wire

Flux-cored arc welding (process no. 136, FCAW)

The process is suitable for the assembly of thin products with the same welding parameters recommended for equivalent carbon-manganese steel grades. If a filler wire is used, it must be of the same type as the base metal.

Supplier	Reference	EN ISO	AWS
Esab	OK Tubrod 14.01*	17632-A / T 42 2 Z M M 2 H10	A5.18 / E70C-GM
	OK Tubrod 15.00**	758 / T 42 3 B M 2 H5	A5.20 / E71T-5H4
	OK Tubrod 15.00**	758 / T 42 3 B C 2 H5	A5.20 / E71T-5MH4
	OK Tubrod 15.17**	758 / T 46 4 1Ni P M 2 H5	A5.29 / E81T1-Ni1M
	OK Tubrod 15.17**	758 / T 46 3 1Ni P C 2 H5
Lincoln Electric	Outershield 500CT-H*	758 / T 50 5 Z P M 2 H5	A5.29 / E81T1-G-H4
S.A.F. Air Liquide	Safdual 31*	758 / T 42 4 B M 2 H5	A5.20 / E71T5
S.A.F. Air Liquide	Safdual 248*	758 / T 46 A Z MM 1 H5	A5.29 / E81T1G-W2M

* Specific welding wire

** Specially adapted welding wire

Recommendations for use

Appearance of the patina

Outdoor use: the patina forms naturally in the open air (over a period of three to four years). Variations in appearance will be observed, depending on the water condensation, evacuation and evaporation conditions. After a few years, the patina will stabilise, even in an industrial, sulphur-containing or rural environment. To ensure optimum patina formation and limit the formation of rust streaks, the oxidation process can be accelerated artificially by first descaling the surface (by sandblasting or shotblasting) and then subjecting it to alternate periods of dry and humid conditions.

Indoor use: to preserve the natural appearance of the material and at the same time avoid powdery oxide deposits that may cause staining, the following three steps are recommended:

First remove all dusty deposits, stains or surface defects, then apply a chemical treatment to those areas where corrosion has not yet developed
Clean the surface with water, brush and dry
Finally, apply a colourless, matt, UV-resistant varnish

Use painted: as the surface has a high reactivity, it is recommended that the first coat of paint be applied on a clean surface immediately after pickling or sandblasting.

The presence of copper in the oxide layer contributes to the formation of a strongly bonded, elastic and compact patina on the surface of Indaten^® 355 in the course of the corrosion process. The chromium and nickel contribute to the formation of insoluble alkaline sulphates, which will seal the pores of the oxide layer, thereby protecting the metal from water and oxygen. Silicon, and to a lesser extent phosphorus, also has a favourable effect on corrosion resistance.

Corrosion in a salt spray atmosphere (according to ASTM B117)

Tests were conducted in a chamber at a temperature of 35°C, in a humid atmosphere with a 5% concentration of NaCl. Weight loss was measured after 1000 hours. The sample was weighed before and after the test, and the rust was removed with an acid solution.

Atmospheric corrosion

The samples were exposed to an industrial, marine atmosphere for 12 months.

Brand correspondence

	EN 10155:1993	JIS G3114	ASTM	EN 10025-5:2004	Old brand names
S235J0W EN 10025-5				S235J0W
S235J2W EN 10025-5				S235J2W
S355J0W EN 10025-5				S355J0W
S355J0WP EN 10025-5				S355J0WP
Indaten^® 355A	S355J0WP	SMA 50AW	A242 Grade A/A606 T2/A606 T4	S355J0WP	Ensacor^® A
S355J2W EN 10025-5				S355J2W
Indaten^® 355D	S355J2W			S355J2W	Ensacor^® D
S355J2WP EN 10025-5				S355J2WP

Dimensions

Mill finish

Thickness (mm)	Min width	S235J0W EN 10025-5, S235J2W EN 10025-5	S355J0W EN 10025-5, S355J2W EN 10025-5, Indaten^® 355D	S355J0WP EN 10025-5, Indaten^® 355A, S355J2WP EN 10025-5
Thickness (mm)	Min width	Max width	Max width	Max width
1.50 ≤ th < 2.00	900	-	1250	1250
2.00 ≤ th < 2.50		1400	1250	1400
2.50 ≤ th < 3.00		1750	1540	1540
3.00 ≤ th < 3.50		2050	1700	1700
3.50 ≤ th < 4.50			1900	1780
4.50 ≤ th < 5.00			2050	1900
5.00 ≤ th < 5.50			2130	1990
5.50 ≤ th < 9.50			2130	2130
9.50 ≤ th < 10.00			2050	2130
10.00 ≤ th < 12.00			2050	2030
12.00 ≤ th < 13.00			1930	2030
13.00 ≤ th < 16.00			1930	1930
16.00 ≤ th < 20.00		-	1780	1780

Product can also be supplied pickled on request.

Mechanical properties

	Notes	Direction	Thickness (mm)	R_e (MPa)	R_m (MPa)	A₈₀ (%)	A 5.65√S_o (%)	Bending ratio (th)	KV 0°C (J)	KV -20°C (J)
S235J0W EN 10025-5		L	6 - 25	-	-	-	-	-	≥ 27	-
		T	1.5 - 2	≥ 235	360 - 510	≥ 17	-	-	-	-
			2 - 2.5			≥ 18
			2.5 - 3			≥ 19
			3 - 16			-	≥ 24
			16 - 25	≥ 225
S235J2W EN 10025-5		L	6 - 25	-	-	-	-	-	-	≥ 27
		T	1.5 - 2	≥ 235	360 - 510	≥ 17	-	-	-	-
			2 - 2.5			≥ 18
			2.5 - 3			≥ 19
			3 - 16			-	≥ 24
			16 - 25	≥ 225
S355J0W EN 10025-5		L	6 - 20	-	-	-	-	-	≥ 27	-
		T	1.5 - 2	≥ 355	510 - 680	≥ 14	-	-	-	-
			2 - 2.5			≥ 15
			2.5 - 3			≥ 16
			3 - 16		470 - 630	-	≥ 20
			16 - 20	≥ 345
S355J0WP EN 10025-5		L	6 - 12	-	-	-	-	-	≥ 27	-
		T	1.5 - 2	≥ 355	510 - 680	≥ 14	-	-	-	-
			2 - 2.5			≥ 15
			2.5 - 3			≥ 16
			3 - 12		470 - 630	-	≥ 20
Indaten^® 355A	1	L	6 - 16	-	-	-	-	-	≥ 27	-
		T	1.7 - 3	≥ 355	510 - 680	≥ 18	-	≥ 1.5	-	-
			3 - 10		490 - 630	-	≥ 22	≥ 2
			10 - 16					≥ 3
S355J2W EN 10025-5		L	6 - 20	-	-	-	-	-	-	≥ 27
		T	1.5 - 2	≥ 355	510 - 680	≥ 14	-	-	-	-
			2 - 2.5			≥ 15
			2.5 - 3			≥ 16
			3 - 16		470 - 630	-	≥ 20
			16 - 20	≥ 345
Indaten^® 355D		L	5 - 12.7	-	-	-	-	-	-	≥ 27
		T	1.8 - 2	≥ 355	510 - 680	≥ 14	-	-	-	-
			2 - 2.5			≥ 15
			2.5 - 3			≥ 16
			3 - 12.7		470 - 630	-	≥ 20
S355J2WP EN 10025-5		L	6 - 12	-	-	-	-	-	-	≥ 27
		T	1.5 - 2	≥ 355	510 - 680	≥ 14	-	-	-	-
			2 - 2.5			≥ 15
			2.5 - 3			≥ 16
			3 - 12		470 - 630	-	≥ 20
Values in bold: tighter than the standard
1. For impact resistance at lower�temperatures, please check with ArcelorMittal technical representative.

Chemical composition

	C (%)	Mn (%)	P (%)	S (%)	Si (%)	Al (%)	Cu (%)	Cr (%)	Ni (%)	Mo (%)	N (%)	C_eq (%)	Galvanisation
S235J0W EN 10025-5	≤ 0.130	0.20 - 0.60	≤ 0.035	≤ 0.035	≤ 0.40	≥ 0.020	0.25 - 0.55	0.40 - 0.80	≤ 0.65	-	≤ 0.009	≤ 0.44	No
S235J2W EN 10025-5	≤ 0.130	0.20 - 0.60	≤ 0.035	≤ 0.030	≤ 0.40	≥ 0.020	0.25 - 0.55	0.40 - 0.80	≤ 0.65	-	≤ 0.009	≤ 0.44	No
S355J0W EN 10025-5	≤ 0.160	0.50 - 1.50	≤ 0.035	≤ 0.035	≤ 0.50	≥ 0.020	0.25 - 0.55	0.40 - 0.80	≤ 0.65	≤ 0.30	≤ 0.009	≤ 0.52	No
S355J0WP EN 10025-5	≤ 0.120	≤ 1.00	0.060 - 0.150	≤ 0.035	≤ 0.75	≥ 0.020	0.25 - 0.55	0.30 - 1.25	≤ 0.65	-	≤ 0.009	≤ 0.52	No
Indaten^® 355A	≤ 0.120	≤ 1.00	0.060 - 0.150	≤ 0.015	0.20 - 0.50	≥ 0.020	0.25 - 0.55	0.30 - 0.80	≤ 0.30	-	≤ 0.009	≤ 0.45	No
S355J2W EN 10025-5	≤ 0.160	0.50 - 1.50	≤ 0.030	≤ 0.030	≤ 0.50	≥ 0.020	0.25 - 0.55	0.40 - 0.80	≤ 0.65	≤ 0.30	≤ 0.009	≤ 0.52	No
Indaten^® 355D	≤ 0.160	0.50 - 1.50	≤ 0.030	≤ 0.030	≤ 0.50	≥ 0.020	0.25 - 0.55	0.40 - 0.80	≤ 0.65	≤ 0.30	≤ 0.009	≤ 0.52	No
S355J2WP EN 10025-5	≤ 0.120	≤ 1.00	0.060 - 0.150	≤ 0.030	≤ 0.75	≥ 0.020	0.25 - 0.55	0.30 - 1.25	≤ 0.65	-	≤ 0.009	≤ 0.52	No
Values in bold: tighter than the standard
The chemical properties given are based on cast analysis data. For Indaten^® 355D, Zr ≤ 0.15%

C (%)

Mn (%)

P (%)

S (%)

Si (%)

Al (%)

Cu (%)

Cr (%)

Ni (%)

Mo (%)

N (%)

C_eq (%)

Galvanisation

S235J0W EN 10025-5

≤ 0.130

0.20 - 0.60

≤ 0.035

≤ 0.40

≥ 0.020

0.25 - 0.55

0.40 - 0.80

≤ 0.65

≤ 0.009

≤ 0.44

S235J2W EN 10025-5

≤ 0.130

0.20 - 0.60

≤ 0.035

≤ 0.030

≤ 0.40

≥ 0.020

0.25 - 0.55

0.40 - 0.80

≤ 0.65

≤ 0.009

≤ 0.44

S355J0W EN 10025-5

≤ 0.160

0.50 - 1.50

≤ 0.035

≤ 0.50

≥ 0.020

0.25 - 0.55

0.40 - 0.80

≤ 0.65

≤ 0.30

≤ 0.009

≤ 0.52

S355J0WP EN 10025-5

≤ 0.120

≤ 1.00

0.060 - 0.150

≤ 0.035

≤ 0.75

≥ 0.020

0.25 - 0.55

0.30 - 1.25

≤ 0.65

≤ 0.009

≤ 0.52

Indaten^® 355A

≤ 0.120

≤ 1.00

0.060 - 0.150

≤ 0.015

0.20 - 0.50

≥ 0.020

0.25 - 0.55

0.30 - 0.80

≤ 0.30

≤ 0.009

≤ 0.45

S355J2W EN 10025-5

≤ 0.160

0.50 - 1.50

≤ 0.030

≤ 0.50

≥ 0.020

0.25 - 0.55

0.40 - 0.80

≤ 0.65

≤ 0.30

≤ 0.009

≤ 0.52

Indaten^® 355D

≤ 0.160

0.50 - 1.50

≤ 0.030

≤ 0.50

≥ 0.020

0.25 - 0.55

0.40 - 0.80

≤ 0.65

≤ 0.30

≤ 0.009

≤ 0.52

S355J2WP EN 10025-5

≤ 0.120

≤ 1.00

0.060 - 0.150

≤ 0.030

≤ 0.75

≥ 0.020

0.25 - 0.55

0.30 - 1.25

≤ 0.65

≤ 0.009

≤ 0.52

Values in bold: tighter than the standard

The chemical properties given are based on cast analysis data.

For Indaten^® 355D, Zr ≤ 0.15%

For commercial information (quotations, deliveries, product availability):

Europe: http://industry.arcelormittal.com/agencies
Other countries: international@arcelormittal.com

For technical questions about these products: flateurope.technical.assistance@arcelormittal.com
For researchers: click here

All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.