Corten Steel ASTM A242 Type 1 Weathering Steel Plate

ASTM A242 Type 1 weathering steel same as weathering steel, it can be used in unpainted condition for the corrosion stops naturally and become a protective layer.

ASTM A242 has 2 grades: Type 1 and Type 2, while type 1 is the most used structural steel grade. Usually it is produced to be hot rolled state, it is suitable for cutting, forming, drilling and machining, grinding.

Chemical Composition for ASTM A242 Type 1 Weathering Steel Plate:

Corten – A	ASTM 242 TYPE -1
Carbon, Max	0.19
Manganese	0.80-1.25
Phosphorus	0.04
Sulphur, max	0.05
Silicon	0.30-0.65
Nickel, max	0.40
Chromium	0.40-065
Molybdenum, max	–
Copper	0.25-0.40
Vanadium	0.02-0.10
Aluminimum	…

Mechanical properties of ASTM A242 Type 1 Weathering Steel Plate:

	Tensile Strength	Min. Yield Point	Elongation
CORTEN A	[470 – 630 MPa]	[355 MPa]	20 % min
ASTM 588 GR. A	[485 MPa]	[345 MPa]	21% min
ASTM 242 TYPE -1	[480 MPa]	[345 MPa]	16% min
IRSM 41- 97	[480 MPa]	[340 MPa]	21% min

Corten Steel ASTM A242 Type 1 steel Application:
ASTM A242 Type 1 specification is made for low alloy steel with high strength, it has good atmospheric corrosion resistance, some applications has shown that it has better corrosion resistance than ASTM A36 steel plate and ASTM A572 Grade 50.