ASTM A788 PDF

ASTM A788 PDF

ASTM A Standard Specification for Steel Forgings, General Requirements. to steel forgings under any of the following specifications issued by ASTM. This standard is issued under the fixed designation A/AM; the number . 1 ASTM Standards:3 A/AM Specification for Alloy Steel Forgings for. ASTM A/AMb. Standard Specification for Steel Forgings, General Requirements. standard by ASTM International, 11/01/ View all product details.

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After forging, specimens shall be allowed to cool prior to reheating for heat treatment. Wrought Carbon Steel Wheels. Plot the percentage shear fracture against test temperature and determine the transition temperature by interpolation extrapolation is not ashm. The purchaser may specify in the order a speci? The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

This specification covers a group of common requirements that, unless covered by the individual product specification in another ASTM document, applies to steel forgings for general use. Cooling Prior to Heat Treatment 7. Repair welding shall not be allowed unless permitted by the product specification.

Siddhagiri Metals and S788 Rating: The last approved version of this historical standard is referenced on www. The bar coding system, if applied at the discretion atm the supplier, should be consistent with one of published industry standards for bar coding.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefax awtm, or service astm.

After forging, specimens shall be aztm to cool prior to reheating for heat treatment. Test each specimen at a different temperature such that the percentage of shear fracture will be both above and below the value of n, but within a range of Forgings of large size are commonly used by industrial equipment and machinery such as steel, textile, paper, power generation and transmission, chemical and refinery industries.

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Asm coding is an acceptable supplemental identi? The resultant chemical analysis of each zone shall conform to the requirements of the product speci? Combining values from the two systems may result in non-conformance with the standard. Traditionally, forging was performed by a smith using hammer and anvil, though introducing water power in the production and working of iron in the 12th century which allowed the use of large trip hammers or power hammers that exponentially increased the amount and size of iron that could be produced and forged easily.

A number in parentheses indicates the year of last reapproval. Repair welding shall not be allowed unless permitted by the product specification. When not otherwise de?

The manufacturer shall accept responsibility for injurious conditions that will not be removed in? Offer on Fasteners Sitemap. The outside diameter may be contoured if required. Intercritical Heat Qstm S4. Level A P S Heat 0. The material is then reheated to a temperature in the intercrtical range between the Ac1 and the Ac3 and again cooled below the Ac1, followed by subcritical tempering in the range speci?

ASTM A – 02 Standard Specification for Steel Forgings, General Requirements NO_PDF

Originally approved in This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The steel producer shall remove the transition material by any established procedure that positively separates the astk. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.

ASTM A covers the standard specification for stainless steel forgings. Forging is one of the oldest processes. Step 1—Determine furnace factor FF for each heat based on weight. The primary melting may incorporate separate degassing or re? Sequential or Continuous Strand Casting S3. The results of the method used shall conform to the requirements of the product speci?

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Current edition approved Nov. The heat analysis of the remelted ingot shall be represented by a weighted average see Annex A2 of the individual chemical analyses for each zone. The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order.

Details of heat and product analyses for the evaluation of chemical composition are thoroughly discussed. Steel shall be forged by any of these three classes based on forging temperature: Sometimes referred to as a solid forging. This abstract is a brief summary of the referenced standard. The capacity of the system must also be sufficiently high to reduce the initial surge pressure at the start of the pour to a low level within 2 min. Permissible Variation Over the Speci?

Vacuum Carbon Deoxidation S9. The workpiece is forged between the upper die and lower dies while the mandrel is supported by cranes or manipulators to facilitate rotation.

ASTM A788 Stainless Steel Forged Fittings Suppliers

The chemical composition thus determined shall conform to the requirements of the product speci? Historical Version s – view previous versions of standard. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

NOTE 2— Product cross-sectional area taken at right angles to the ashm of the original ingot or billet is de? Examples for several elements shown below: