This standard has been approved for use by agencies of the Department of Defense. 2. Referenced Documents ASTM Standards: 2. A Specification for. ASTM A – Download as PDF File .pdf), Text File .txt) or read online. ASTM A Standard Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties.
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Steels with lower alloy contents are often satisfactory through the use of special processing techniques. Bars cold-finished by turning, grinding, turning and polishing, etc. Register now while it’s still free! Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Heavier than normal drafts may be required. Close this window and log in. I am trying to bid a job and this is the callout for the material. Per the stated strength levels, I see that HT per A could work, but I can’t be sure without more info.
The Eng-Tips staff will check this out and take appropriate action. Alloy also resists sulfuric and hydrochloric acids under reducing conditions.
Download Now Defense manufacturing is all about project manufacturing and project accounting. Cold Working Alloy is readily cold worked by virtually all cold fabrication methods.
Normal good shop practices are assumed, with control of austenitizing and tempering temperatures, and mild agitation of the part in the quenching bath.
Applications Chemical Processing Equipment 4a00 in fluorine, hydrofluoric acid, hydrogen fluoride, hydrochloric acid, sulfuric acid, neutral and alkaline salt solutions, caustic alkalies, non-oxidizing halides and dry chlorine service. Join your peers on the Internet’s largest technical engineering professional community.
ASTM A Class Q2 – Metal and Metallurgy engineering – Eng-Tips
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Available thicknesses for Alloy Students Click Here Join Us! Steels with lower alloy contents are often satisfactory through the use of special processing techniques.
Alloy is readily fabricated by conventional processing operations. The alloy is most frequently specified in environments ranging from mildly oxidizing through neutral and in moderately reducing conditions. Alloy is one of the most widely used materials for marine applications, shipbuilding and seawater desalination plants.
Download Now White Paper: Thickness of Flat Sections, in. Alloy can be machined at standard rates with conventional machine tools. Note astmm H-steel with the same grade designation as a standard SAE-AISI steel is capable of meeting the same section and strength requirements as the standard steel see Specification Aand is the preferred method of specification.
This is not a specification for the procurement of steel. Note 4—Steels having a maximum carbon content of 0.
Applications suggested for astk materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications.
Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. A hardness indicated by tests made at a location shown in Fig. The alloy has a somewhat higher work hardening rate than carbon steel, but not as high as stainless steel. It is resistant to chloride stress corrosion cracking and has high strength and toughness over a wide range of temperatures.
The choice of welding product is dependent upon the materials being welded and the environment in which it occurs. Machining Alloy can be machined at standard rates with conventional machine tools. Only cold-drawn series steels used in the strength level and section thickness for which hot-rolled steels of the a4000 composition are approved may be welded, and in this case caution should be exercised to see that excessive grain growth does not occur in the heat-affected zone.
Note 1—Steels listed as approved for a certain section or strength may be used for lighter sections and lower strengths. Cold working should be performed on annealed material.
Link to Active This link will always route to the current Active version of the standard. How can you prepare a quality bid when ASTM A is called a4400 for steel composition and mechanical properties?? The alloy is also available in the as-rolled condition Alloy AR which imparts higher strength to the alloy.
Note 1—Steels listed as approved for heavier sections or higher strengths may be used in the same conditions for lighter sections and lower strengths.