CORTEN-A / CORTEN-B / S355JOWP / S355J2WP / S355JOW / S355J2W / IRSM41-97 / IRS-M41 / IRSM-41 / JIS G3125 SPA-H CORROSION RESISTANT / WEATHER RESISTANT STEEL SHEET, PLATE COLD ROLLED & HOT ROLLED, ASTM A423, ASTM A847 WELDED ERW SEAMLESS TUBES, PIPES, ROUND, SQUARE, RECTANGULAR


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

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

• 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 ≤16 345

• 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)

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 - - - - - - -

• 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, IRS-M41, IRS M41-97 FOR RAILWAY WAGON & CONTAINER
• JIS G3125 SPA-H, JIS G3125-SPAH, JIS:G3125-SPA-H, JIS-G3125 Grade SPA-H, G3125-SPAH