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.
Note 2 — For methods of estimating the atmospheric corrosion resistance of low alloy steels, see Guide G or actual data. A number in parentheses indicates the year of last reapproval. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. The atmospheric corrosion resistance of this steel in most environments is substantially better than carbon steel with or without copper addition Note 2. Combining values from the two systems may result in non-conformance with the standard.
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.
Tubeco, Inc. | Specs – ASTM A High Strength Low Alloy Steel Pipe and Tube
When this steel is used in welded construction, the welding procedure shall be suitable for the steel and the intended service.
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. Historical Version s – view previous versions of standard. Round and shaped tubing shall meet the required tensile properties such as tensile strength, yield strength, and elongation.
ATolerances include allowance for convexity or concavity. When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications. Within the text, the SI units are shown in brackets.
ASTM A847 Pipes Manufacturer
Link to Active This link will always route to the current Active version of the standard. It is not required however for squares and rectangles or other shapes under A AApplies to specified wall thicknesses 0.
NOTE 1-Products manufactured to this specification may not asrm 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. Outside dimension tolerances for square and rectangular tubing shall not exceed the specified plus and minus tolerances.
Twist tolerances for square and rectangular structural tubing shall be indicated. Under ASTM A, the corner radius for square and rectangular tubing shall not exceed three times the corner radius. W847 and product analysis shall be performed wherein steel materials shall conform to the required chemical composition for carbon, manganese, phosphorus, sulphur, and copper.
For rectangular sections, the tolerance calculated for the larger flat dimension shall also apply to the smaller flat dimension.
Chemical composition Grade Mfg. NOTE 2-For methods of estimating the atmospheric corrosion resistance fo low alloy steels see Guide G or s847 data. This abstract is a brief summary of the referenced standard. Please contact one of our knowledgeable atsm staff members who will assist you with any further questions regarding this specification or with your specific tubing requirements.
For lighter wall thicknesses, elongation will be by agreement. Tubing having other dimen-sions may be furnished provided such tubing complies with all other requirements of this specification.
When this steel is used in welded construction. 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.
It astk informational only and not an official asstm of the standard; the full text of the standard itself must be referred to for its use and application. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Tubing having other dimensions may be furnished provided such tubing complies with all other requirements of this specification. BIf chromium and silicon contents are each 0. This standard is issued under the fixed designation A ; the a84 immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
When properly exposed to the atmosphere, this steel can be used bare unpainted for many applications. 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.
If flash control is required, please specify at time of quotation or order placement. 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 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. As a standard under ASTM A, electric resistance welded tubing is normally provided without removal of inside flash. 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, asgm and other special shaped tubing shall not be located within the corner radius unless specified by the customer or manufacturer. This specification covers a84 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.
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