Corten-A/Corten-B

CORTEN-A / CORTEN-A / S355JOWP / S355J2WP / S355JOW / S355J2W / IRSM41-97 / IRSM-41 / IRS M41 / IRS M-41 / IRS-M41-97 / JIS G3125-SPA-H CORROSION RESISTANT / WEATHER RESISTANT STEEL SHEETS, PLATES COLD ROLLED & HOT ROLLED, ASTM A423, ASTM A847 WELDED ERW SEAMLESS TUBE, PIPE, ROUND TUBE, SQUARE PIPE, RECTANGULAR PIPE

Scope
COR-TEN A applies to plates up to 12.5 mm in thickness, COR-TEN B applies to plates up to 50 mm in thickness.

Definition
Weathering means that due to their chemical compositions COR-TEN A and COR-TEN B steels, when utilized unprotected, exhibits increased resistance to atmospheric corrosion compared to unalloyed steels. This is because it forms a protective layer on its surface under the influence of the weather.

Applications
The steel is used for various types of welded, bolted and riveted constructions e.g. steel frame structures, bridges, tanks and containers, exhaust systems, vehicles and equipment constructions.
Basic guidelines for the use of this steel in the unprotected condition are described in EN 10025-5 and DASt rule 007.

Chemical Composition (heat analysis, %)

Grade	C	Si	Mn	P	S	Cr	Cu	V	Ni
COR-TEN A	0.12	0.25-0.75	0.20-0.50	0.07-0.15	0.030	0.50-1.25	0.25-0.55	-	0.65
COR-TEN B	0.16	0.30-0.50	0.80-1.25	0.030	0.030	0.40-0.65	0.25-0.40	0.02-0.10	0.40

In order to obtain fine grain structure a sufficient amount of nitrogen absorbing elements is added (e.g. ≥0.02% Al).

Mechanical Properties, in the state of delivery condition
At room temperature for plates ≥3mm in thickness (transverse test specimans, according to EN 10002). Requirements to hot rolled plates ≤3mm in thickness according to EN 10025-5.

Grade	*Minimum yield point (ReH Mpa )**	Tensile strength Rm MPa	Minimum elongation A (Lo=5.65 √So) %
COR-TEN A	355	470-630	20

*) 1 Mpa = 1N/mm2

In case of cold rolled material the yield point is min. 310 Mpa and the tensile strength min. 445 MPa. Furthermore cold rolled sheets ≤3mm in thickness made of steel grade COR-TEN A-F for increased demand to the cold formability is available.

Mechanical properties:

Yield point min. 275 Mpa
Tensile strength min. 410 Mpa
elongation min. 25%
Tolerances on dimensions and shape according to EN 10131.

Grade	Material thickness mm	*Minimum yield point (ReH Mpa )**	Tensile strength Rm MPa	Minimum elongation A (Lo=5.65 √So) %
COR-TEN B	≤16	355	470-630	20
COR-TEN B	≤16	345	470-630	20

*) 1 Mpa = 1N/mm2

The notched-bar impact energy is determined on ISO-V longitudinal test specimens at a temperature of - 20°C as an average of three tests. For product thicknesses ≥10mm the average value is at least 27 J. For thicknesses between 10mm and 6mm, the minimum impact value is reduced proportionally to the specimen width (product thickness).

No impact test is performed on products below 6mm in thickness.

Number of Tests

1 tensile test
1 test specimen per 40 t from each heat*)
Notched bar impact test
1 set specimens per 40 t from each heat *)
(3 specimens) (at test temperature -20°C)

*) as referenced in EN 10025-5

EQUIVALENT SPECIFICATIONS

Material #	EN 10155	SEW 087	NFA 35-502	UNI	BS 4360	UNE	ASTM	JIS G3114
1.8961	S235J2W	WTSt 37-3	E 24 W 4	Fe 360 DK 1	-	-	-	-
1.8945	S355J0WP	E 36 WA 3	Fe 510 C1K1	WR 50 A	-	-	-	-
1.8946	S355J2WP	-	E 36 WA 4	Fe 510 D1K1	-	-	A 242 Type 1	-
1.8959	S355J0W	-	E 36 WB 3	Fe 510 C2K1	WR 50 B	-	A 588 - A 242 Gr. 1	SMA 50 AW
1.8963	S355J2G1W	WTSt 52-3	-	Fe 510 D2K1	WR 50 C	-	A 588 Gr. A	to
1.8965	S355J2G2W	-	-	-	-	-	-	SMA 50 CP
1.8966	S355K2G1W	-	E 36 WB 4	-	-	-	A 709 Gr. 50 W	-
1.8967	S355K2G2W	-	-	-	-	-	-	-

CORROSION RESISTANT AND WEATHER RESISTANT STEEL CAN BE ALSO SUPPLIED ACCORDING TO FOLLOWING STANDARD & SPECIFICATIONS :

COR-TEN® A, COR-TEN®A, COR-TEN A, CORTEN-A, CORTEN A
COR-TEN® B, COR-TEN®B, COR-TEN B, CORTEN-B, CORTEN B
ASTM A588 Grade A, ASTM A 588 Grade-A, ASTM A-588 Grade A
ASTM A588 Grade B, ASTM A 588 Grade-B, ASTM A-588 Grade B
ASTM A588 Grade C, ASTM A 588 Grade-C, ASTM A-588 Grade C
ASTM A242 Type 1, ASTM A242 Type-1, ASTM A-242 Type 1
S355JOWP EN 10025-5, S355JOWP EN10025-5, S355 JOWP EN-10025-5
S355JOWP+N EN 10025-5, S355JOWP+N EN10025-5, S355 JOWP+N EN-10025-5
S355J2W EN 10025-5, S355J2W EN10025-5, S355 J2W EN-10025-5
S355J2W+N EN 10025-5, S355J2W+N EN10025-5, S355 J2W+N EN-10025-5
S355J2G1W EN 10155, S355J2G1W EN10155, S355 J2G1W EN-10155
S355K2G1W EN 10155, S355K2G1W EN10155, S355 K2G1W EN-10155
S355J2G2W EN 10155, S355J2G2W EN10155, S355 J2G2W EN-10155
S355K2G2W EN 10155, S355J2G2W EN10155, S355 K2G2W EN-10155
SAILCOR IRSM41, IRSM-41, IRS-M41 FOR RAILWAY WAGON & CONTAINERS
JIS G3125 SPA-H, JIS G3125-SPAH, JIS:G3125-SPA-H, JIS-G3125 Grade SPA-H, G3125-SPAH

Inspection & Approval Certificates : C/W Certificate (Calibration Works Certificate) EN 10204 3.1 / DIN 50049 3.1 / ISO 10474 3.1 Mill Test Certificate, NACE MR-0103 / NACE MR-0175 / ISO 15156, CE Marked, European Pressure Equipment Directive PED-97/23/EC, AD-2000-WO, ASME Boiler & Pressure Vessel Code Sec.II Part A Ed. 2008, API 6A (American Petroleum Institute), with 3.2 certificate duly Certified & Approved by LRS (Lloyd's Register), GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas), ABS (American Bureau of Shipping), SGS, TUV, RINA, IRS, NORSOK Approved Standard M-630, M-650 Rev.3

If you have any requirement of above items, please feel free to contact us

Regards,

CONTACT PERSON :

MUKESH SHAH
Director
Mobile No. 0091 - 9820292499
Email - marketing@rolexmetals.com

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