ASTM A847 Corten Steel Pipes are a category of high-strength, low-alloy structural steel pipes engineered to withstand atmospheric corrosion. These pipes are well-suited for a variety of applications, including process vessels, heat exchangers, and other industrial components where both corrosion resistance and strength are essential.

The inherent corrosion resistance of ASTM A847 Corten Steel makes it a preferred choice for applications exposed to challenging environmental conditions. Its high-strength properties ensure that it can perform reliably in demanding industrial settings, where structural integrity and longevity are of utmost importance.

ASTM A847 is a distinctive type of weathering steel known for its high strength and corrosion-resistant properties, primarily used in the production of cold-formed welded square and rectangular tubing and pipes. What sets this steel apart is its remarkable resistance to atmospheric corrosion, surpassing that of carbon steel, whether with or without the addition of copper.

Intended for use in the construction of bridges and various structures demanding both strength and enhanced resistance to corrosion, ASTM A847 is engineered with a 50ksi minimum yield strength and a 70ksi minimum tensile strength. The cold-forming and welding processes used in its production ensure chemical consistency across the entire tube surface. Notably, no additional external metal is introduced during welding, and this process contributes to the physical properties, with the minimum yield strength of 50ksi and a minimum tensile strength of 70ksi.

This specification is tailor-made for structural applications where it is vital to reduce weight while simultaneously enhancing resistance to corrosion. ASTM A847 is the top choice for structures that necessitate welding and bolting, as it offers a unique combination of high strength and superior resistance to corrosion.

The “Weathering Steel” moniker is aptly applied to ASTM A847 steel tubing due to its exceptional ability to form a stable oxide layer on the surface. This natural oxide layer acts as a protective barrier, shielding the material from the harmful effects of atmospheric corrosion. In this regard, it shares similarities with ASTM A588 and ASTM A606 Type 4 steels, making it an excellent choice for applications where durability and resilience are of paramount importance.

SA 213 T9 Tube Specification Chart

Standards	ASTM A 847 / ASME SA 847
Shape	round, square, rectangular, Hydraulic, Honed Tube
Squares Size	3″ through 12″
Rectangles Size	4″ x 2″ through 16″ x 8″
Rounds Size	6.625″OD, 8.625″OD, 10.75″OD, 12.75″OD, 14″OD and 16”OD
Walls Thickness	.125″ through .625″
Length	Single Random, Double Random & Cut Length
Type	Weathering Steel
End	Plain End, Beveled End

ASTM A847 Corten Steel Chemical Composition

Elements	Heat Analysis	Product Analysis
Carbon Max	0.20	0.24
Manganese Max	1.35	1.40
Phosphorus Max	0.15	n/a
Sulpher Max	0.05	0.06
Copper Min	0.20	0.18

ASTM A847 Corten Steel Tube Mechanical Properties

Grade	Yield Strength Min PSI	Tensile Strength Min PSI	Elongation % (min)
ASTM A847	50,000	70,000	19

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