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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Tubing having other dimen-sions may be furnished provided such tubing complies with all other requirements of this specification. This abstract is a brief summary of the referenced standard.
As a standard under ASTM A, electric resistance atsm tubing is normally provided without removal of inside flash.
The atmospheric corrosion resistance of this steel in most environments is substantially better than carbon steel with or without copper addition Note 2. The values stated qstm each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Under ASTM A, the corner astn for square and rectangular tubing shall not exceed three times the corner radius. It is not required however for squares and rectangles or other shapes under A For rectangular sections, the tolerance calculated for the larger flat dimension shall also apply to the smaller flat dimension.
Historical Version w847 – view previous versions of standard. 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.
AApplies to specified wall thicknesses 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.
When this steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service. BIf chromium and silicon contents are each 0. Note 2 — For methods of estimating the atmospheric corrosion resistance of low alloy steels, see Guide G or actual data. ABecause of the degree to which phosphorus segregates, roduct analysis for this element is not technologically appropriate for rephosphorized steels unless misapplication is clearly indicated.
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.
ASTM A | a steel
When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications. Link to Active This link will always route to the current Active version of the standard. A number in parentheses indicates the year of last a874. 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.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications.
Twist tolerances for square and rectangular structural tubing shall be indicated. For a complete listing of all tubing sizes produced by Valmont, please visit our Steel Tubing Product Catalog. 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.
If flash control is required, please specify at time of quotation or order placement. ATolerances include allowance for convexity or concavity. 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 structures, etc.
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. This standard is issued under the fixed designation A ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Heat and product analysis shall be performed wherein steel materials shall conform to the required chemical composition for carbon, manganese, phosphorus, sulphur, and copper.
ASTM A847 Pipes Manufacturer
Chemical composition Grade Mfg. Combining values from the two systems may result in non-conformance with the standard.
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. Length tolerance for structural tubing shall be in accordance with the specified values.
The w847 corrosion resistance of this steel in most envi-ronments is substantially better than carbon steel with or without copper addition Note 2. Within the text, the SI units are shown in brackets. Astn dimension tolerances for square and rectangular tubing shall not exceed the specified plus and minus tolerances. Tubing having other dimensions may be furnished provided such tubing complies with all other requirements of this specification.
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.