Wherever outstanding appearance, low maintenance and high strength are the requirements, Independence Tube ASTM A Weathering Structural Steel. ASTM A High strength low alloy steel pipe and tube spec for weathering steel. Specification for HSLA steel with increased atmospheric corrosion resistance. Marc Steel is a known ASTM A Corten Steel Pipes supplier in the industry. With tensile and yield strength, ASTM A Corten Weathering.
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This standard is issued under the fixed designation A ; the number immediately following the designation indicates the year astmm original adoption or, in the case of revision, the year of last revision. If flash control is required, please specify at time of quotation or order placement. When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications. Length tolerance for structural tubing shall be in accordance a84 the specified values.
ATolerances include allowance for convexity or concavity.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. ABecause of astmm degree to which phosphorus segregates, roduct analysis for this element is not technologically appropriate for rephosphorized steels unless a8847 is clearly indicated.
Note 2 — For methods of estimating the atmospheric corrosion resistance of low alloy steels, see Guide G or actual data.
Note 1 — Products manufactured sstm this specification may not be suitable for those applications where low temperature notch toughness properties may be important, such as dynamically loaded elements in welded structures, etc. Tubing having other dimensions may be furnished provided such tubing complies with all other requirements of this specification.
For lighter wall thicknesses, elongation will be by agreement. Link to Active This link will always route to the current Active version of the standard.
ASTM A | a steel
This specification covers standard requirements for cold-formed welded and seamless high-strength, low-alloy round, square, rectangular, or special shaped structural tubing for welded, riveted, or bolted construction of bridges and buildings and for general structural purposes where high strength and enhanced atmospheric corrosion resistance are required.
Commonly referred to as weathering steel, ASTM A Type 4 high strength, low alloy HSLA steel utilizes elements such as copper, chromium, nickel and silicon to enhance the protection and resistance to atmospheric corrosion.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. For rectangular sections, the tolerance calculated for the larger flat dimension shall also apply to the smaller flat dimension. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. BIf chromium and silicon contents are each 0.
With the additional elements such as those noted above, the added strength of the steel itself allows for a lighter wall thickness of steel to be used than for carbon steel tubing in order to meet structural physical requirements.
Combining values from the two systems may result in non-conformance with the standard. Within the text, the Asmt units are shown in brackets. AApplies to specified wall thicknesses 0.
The atmospheric corrosion resistance of this steel in most environments is substantially better than carbon steel with or without copper addition Note 2. When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications.
For a complete listing of all 8a47 sizes produced by Valmont, please visit our Steel Tubing Product Catalog.
Twist tolerances for square and rectangular structural tubing shall be indicated. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
A number in parentheses ast, the year of last reapproval. Chemical composition Grade Mfg.
Tubeco, Inc. | Specs – ASTM A High Strength Low Alloy Steel Pipe and Tube
Please contact one of our knowledgeable sales staff members who will assist you with any further questions regarding this specification or with your specific tubing requirements. According to ASTM A, the weld seam location for square, rectangle and other special shaped tubing shall not be located within the corner radius unless specified by the customer or manufacturer. Tubing having other dimen-sions may be furnished provided such tubing complies with all other requirements of this specification.
As a standard under ASTM A, electric resistance welded tubing is normally provided without removal of inside flash. NOTE 1-Products manufactured to this specification may not be suitable for those applications where low temperature notch toughness properties may be important, such as dynamically loaded elements in welded stuctures, etc.
Outside dimension tolerances for square and rectangular tubing shall not exceed the specified plus and minus tolerances. It is not required however for squares and rectangles or other shapes under A Heat and product analysis shall be performed wherein steel materials shall conform to the required chemical composition for carbon, manganese, phosphorus, sulphur, and copper.
This abstract is a brief summary of the referenced standard. When this steel is used in welded construction. Historical Version s – view previous versions of standard.
Under ASTM A, the corner radius for square and rectangular tubing shall not exceed three times the corner radius. Round and shaped tubing shall meet the required tensile properties such as tensile strength, yield strength, and elongation. When this steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service.
The atmospheric corrosion resistance of this steel in most envi-ronments is substantially better than carbon steel with or without copper addition Note 2.
NOTE 2-For methods of estimating the atmospheric corrosion resistance fo low alloy steels see Guide G or actual data.