Properties

ArcelorMittal's steels with improved atmospheric corrosion resistance are in compliance with the EN 10025-5:2004 standard. These grades are fine-grain, high-strength structural steels offering high yield strength and improved corrosion resistance in specific aggressive environments.

Indaten® 355H meets the requirements of the reference standard and has been further optimised to give extremely high processing and in-service performance.

Advantages

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. With their characteristic colour, steels with improved atmospheric corrosion resistance are used in architectural projects either to harmonise with the environment or to create a pleasing contrast with other materials, such as stainless steel. If the patina is damaged, the steel re-oxidises, thus repairing the patina and maintaining the protective barrier.

 

Steels with improved atmospheric corrosion resistance can also be coated (paint, metallic coatings etc).

 

Experience has shown that organic coatings adhere better to these steels than to other steel grades.

Applications

Steels with improved atmospheric corrosion resistance have a wide range of applications: architecture, smokestacks, freight wagons, silos, pylons and bridges.

 

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


The efficiency of the corrosion protection largely depends on the speed of patina formation.

 

For optimum patina formation:

 

 

Steels with improved atmospheric corrosion resistance have excellent weldability with all the usual welding processes because of their low carbon content and fine-grained structure.

Recommendations for use

Attractive 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 conditions it is exposed to: condensation, evacuation and evaporation of water. After a few years, the patina will stabilise, even in an industrial, sulphur-containing or rural environment. To ensure optimum patina formation, 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:

 

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 shotblasting or sandblasting.

Available options

Options available (after prior agreement):

Brand correspondence

 
Atmospheric corrosion resistant steels according to EN 10025-5:2004
 EN 10155:1993NFA 35 502:1984UNE 36082:1984DIN 17119:1984EN 10025-5:2004BS 4360:1990Old brand names
S235J0W EN 10025-5 S235J0WE 24 W 3AE 235 WC S235J0W  
S235J2W EN 10025-5 S235J2WE 24 W 4AE 235 WDW St 37-3S235J2W  
S355J0WP EN 10025-5 S355J0WPE 36 W A 3AE 355 W1C S355J0WPWR 50A 
S355J2WP EN 10025-5 S355J2WPE 36 W A 4AE 355 W1D S355J2WP  
S355J0W EN 10025-5 S355J0WE 36 W B 3AE 355 W2C S355J0WWR 50B 
S355J2W EN 10025-5 S355J2G2WE 36 W B 4AE 355 W2DW St 52-3S355J2WWR 50C 
S355J2W+N EN 10025-5 S355J2G1WE 36 W B 4AE 355 W2D S355J2W+N  
S355K2W EN 10025-5 S355K2G2W   S355K2W  
S355K2W+N EN 10025-5 S355K2G1W   S355K2W+N  
 
Indaten® 355H
 EN 10155:1993NFA 35 502:1984UNE 36082:1984DIN 17119:1984EN 10025-5:2004BS 4360:1990Old brand names
Indaten® 355HA S355J0WP   S355J0WP Ensacor® A
Indaten® 355HD S355J2G1W/S355J2G2W   S355J2W+N/S355J2W Ensacor® D
Grades in italics: not included in the standard

Dimensions

For the dimensions available, see Table A in data sheet H99.

 

S235 grades are feasible for thicknesses up to 100 mm in normalised delivery condition, after prior agreement.

S355W grades are feasible for thicknesses up to 100 mm in normalised delivery condition.

S355WP grades are only feasible for thicknesses up to 12 mm in normalised delivery condition.


Mechanical properties

Atmospheric corrosion resistant steels according to EN 10025-5:2004
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A 5.65√So (%)
KV 0°C (J)
KV -20°C (J)
S235J0W EN 10025-5L5 - 40--≥ 26≥ 27-
40 - 63≥ 25
63 - 100≥ 24
T5 - 16≥ 235360 - 510≥ 24--
16 - 40≥ 225
40 - 63≥ 215≥ 23
63 - 100≥ 22
S235J2W EN 10025-5L5 - 40--≥ 26-≥ 27
40 - 63≥ 25
63 - 100≥ 24
T5 - 16≥ 235360 - 510≥ 24--
16 - 40≥ 225
40 - 63≥ 215≥ 23
63 - 100≥ 22
S355J0WP EN 10025-5L5 - 12--≥ 22≥ 27-
T5 - 12≥ 355470 - 630≥ 20--
S355J2WP EN 10025-5L5 - 12--≥ 22-≥ 27
T5 - 12≥ 355470 - 630≥ 20--
S355J0W EN 10025-5L5 - 40--≥ 22≥ 27-
40 - 63≥ 21
63 - 100≥ 20
T5 - 16≥ 355470 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335≥ 19
63 - 80≥ 325≥ 18
80 - 100≥ 315
S355J2W EN 10025-5L5 - 40--≥ 22-≥ 27
40 - 63≥ 21
63 - 100≥ 20
T5 - 16≥ 355470 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335≥ 19
63 - 80≥ 325≥ 18
80 - 100≥ 315
S355J2W+N EN 10025-5L5 - 40--≥ 22-≥ 27
40 - 63≥ 21
63 - 100≥ 20
T5 - 16≥ 355470 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335≥ 19
63 - 80≥ 325≥ 18
80 - 100≥ 315
S355K2W EN 10025-5L5 - 40--≥ 22-≥ 40
40 - 63≥ 21
63 - 80≥ 20
T5 - 16≥ 355470 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335≥ 19
63 - 80≥ 325≥ 18
S355K2W+N EN 10025-5L5 - 40--≥ 22-≥ 40
40 - 63≥ 21
63 - 100≥ 20
T5 - 16≥ 355470 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335≥ 19
63 - 80≥ 325≥ 18
80 - 100≥ 315
Indaten® 355H
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A 5.65√So (%)
KV 0°C (J)
KV -20°C (J)
Indaten® 355HAL5 - 12--≥ 22≥ 27-
T5 - 12≥ 355490 - 630≥ 20--
Indaten® 355HDL5 - 80--≥ 22-≥ 40
T5 - 16≥ 355490 - 630≥ 20--
16 - 40≥ 345
40 - 63≥ 335
63 - 80≥ 325
Grades in italics: not included in the standard


Chemical composition

Atmospheric corrosion resistant steels according to EN 10025-5:2004
 
Notes
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Cu (%)
Cr (%)
Ni (%)
Mo (%)
Nb (%)
V (%)
N (%)
S235J0W EN 10025-5 ≤ 0.130.20 - 0.60≤ 0.035≤ 0.035≤ 0.40-0.25 - 0.550.40 - 0.80≤ 0.65---≤ 0.009
S235J2W EN 10025-5 ≤ 0.130.20 - 0.60≤ 0.035≤ 0.030≤ 0.40-0.25 - 0.550.40 - 0.80≤ 0.65----
S355J0WP EN 10025-5 ≤ 0.12≤ 1.000.060 - 0.150≤ 0.035≤ 0.75-0.25 - 0.550.30 - 1.25≤ 0.65---≤ 0.009
S355J2WP EN 10025-5 ≤ 0.12≤ 1.000.060 - 0.150≤ 0.030≤ 0.75-0.25 - 0.550.30 - 1.25≤ 0.65----
S355J0W EN 10025-51≤ 0.160.50 - 1.50≤ 0.035≤ 0.035≤ 0.50-0.25 - 0.550.40 - 0.80≤ 0.65≤ 0.30--≤ 0.009
S355J2W EN 10025-51≤ 0.160.50 - 1.50≤ 0.030≤ 0.030≤ 0.50-0.25 - 0.550.40 - 0.80≤ 0.65≤ 0.30---
S355J2W+N EN 10025-51≤ 0.160.50 - 1.50≤ 0.030≤ 0.030≤ 0.50-0.25 - 0.550.40 - 0.80≤ 0.65≤ 0.30---
S355K2W EN 10025-51≤ 0.160.50 - 1.50≤ 0.030≤ 0.030≤ 0.50-0.25 - 0.550.40 - 0.80≤ 0.65≤ 0.30---
S355K2W+N EN 10025-51≤ 0.160.50 - 1.50≤ 0.030≤ 0.030≤ 0.50-0.25 - 0.550.40 - 0.80≤ 0.65≤ 0.30---
1. Zr ≤ 0.15%
Indaten® 355H
 
Notes
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Cu (%)
Cr (%)
Ni (%)
Mo (%)
Nb (%)
V (%)
N (%)
Indaten® 355HA ≤ 0.12≤ 1.000.060 - 0.150≤ 0.040≤ 0.75≥ 0.0200.25 - 0.550.30 - 1.25≤ 0.65-0.015 - 0.0600.02 - 0.25-
Indaten® 355HD1≤ 0.160.75 - 1.50≤ 0.025≤ 0.025≤ 0.50≥ 0.0200.25 - 0.550.40 - 0.80≤ 0.65-0.015 - 0.0600.02 - 0.25-
Grades in italics: not included in the standard
1. Zr ≤ 0.15%


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

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


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.