Designation: A – 91 (Reapproved ) e1 Standard Speciﬁcation for Steel Bars, Alloy, Standard Grades 1 This s. See the chemical composition and physical properties of ASTM A Grade Steel, find alternative materials, and connect with suppliers. 13 Sep ASTM A Standard Specification for Steel Bars, Alloy, Standard Grades.
|Published (Last):||14 June 2012|
|PDF File Size:||20.52 Mb|
|ePub File Size:||13.7 Mb|
|Price:||Free* [*Free Regsitration Required]|
This specification covers hot-wrought alloy steel bars.
High Tensile Steel | Interlloy | Engineering Steels + Alloys
Welding of in q322 hardened and tempered condition as normally suppliedis not recommended and should be avoided if at all possible, as the mechanical properties will be altered within the weld heat affected zone.
Pre hardened and tempered can be further surface hardened by flame or induction hardening and ast, nitriding. Note 1 — A guide for the selection of steel bars is contained in Practice A The bars shall be free of pipe, cracks, and flakes. Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in coils, produced to a chemical astm a322.
Asstm tensile strength of the core is usually not affected since the nitriding temperature range is generally below the original tempering temperature employed. The steel shall be made astm a322 one or more of the following primary processes: The steel shall be furnished as strand cast or ingot cast.
Astm a322 believes the information provided is astm a322 and reliable.
ASTM A Standard Specification for Steel Bars, Alloy, Standard
The primary melting may incorporate separate degassing or refining astm a322 may be followed by secondary melting using electro-slag remelting or vacuum arc astm a322. ASTM does not give any warranty express or implied or make astmm representation that the contents of this abstract are accurate, complete or up to date.
Historical Version s – view previous versions of standard. Parts can therefore be machined to near final size, leaving a grinding allowance astm a322.
Following forging operation the work piece should be cooled as slowly as possible. Astm a322 this datasheet as pdf. Link to Active This link will always route to the astm a322 Active version of the standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as 3a22 of the standard.
Following quenching to hand warm, most components should be tempered between C – C to remove quenching stresses in the astm a322. This abstract is a brief summary of the referenced standard. Bar astm a322 include forging, ashm treating, cold drawing, machining and many structural components Note 1.
Dark Blue Bar End. Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single astm a322 heat. Welding of in whatever condition should always be carried out using low hydrogen electrodes – please astm a322 your welding consumables supplier.
ASTM A322 1991 Standard Specification for Steel Bars, Alloy, Standard Grades
Astm a322 is recommended that the work piece if possible is wrapped in an heat resistant blanket or buried in sand etc. However no warranty of accuracy, astm a322 or reliability is given, nor will any responsibility be taken for errors or omissions.
Immediately after hot forming, the bars shall be astm a322 to cool to a temperature below the critical range 3a22 suitable conditions to prevent imperfections caused by too rapid cooling. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to astm a322 its use and application.
ASTM A322 Grade 4140
Please consult your heat treater for best results. This will have little effect on case hardness and will reduce the risk of grinding cracks. Within the limits of good manufacturing and inspection practices, the bars shall be free of astm a322 seams, astm a322, segregation, or other imperfections which are due to their nature, degree, or extent, will interfere astj the use of the material in machining or atsm of suitable parts.
Chemical Composition Base Material.