Kategori: Corrosion Resistant / Weather Resistant Steel
Grades: SPA-H
Standard: JIS G3125
What is “COR-TEN” steel
“COR-TEN” is a US Steel trade name for ASTM A588. Corrosion Resistant Steel (often written without the hyphen as Corten) is a weather resistant steel grade which could more accurately be termed as an “Atmospheric Corrosion Resistant Steel”.
The original COR-TEN received the standard designation A 242 (“COR-TEN A”) from the ASTM International standards group. Newer ASTM grades are A 588 (“COR-TEN B”) and A 606 for thin sheet. All alloys are in common production and use.
Characteristic
Corten steel is a copper chromium alloy steel – this alloy displays a greater level of resistance to atmospheric weathering when compared to other unalloyed steels. Corten steel which were developed to eliminate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. It’s chemical composition promotes the early formation of an adhering protective layer of rust when exposed to the elements.
Availability
Plates & Sheet
Thickness 6 – 12mm
Size: 4 x 8 Feet.
Equivalents SPA-H JIS G3125, ASTM A242 (COR-TEN A), ASTM A588 (COR-TEN B), S355J2WP+N, S355J2W+N, S355JOWP, S355JOW, S355J2W, 1.8946, 1.8965, SAILCOR IRSM41-97
Chemical Composition (%)
Grade
C
Si
Mn
P
S
Cr
Cu
V
Ni
Corten 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
SPA-H
0.12
0.20-0.75
0.60
0.07-0.15
0.035
0.30-1.25
0.25-0.50
–
0.65
Mechanical Properties
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
Minimumyield point (ReH Mpa *)
Tensile strengthRm MPa
Minimumelongation A(Lo=5.65 ?So) %
Corten A
355
470-630
20
SPA-H
355
490
22
