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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The results of the method used shall conform to the requirements of the product speci?

Repair welding shall not be allowed unless permitted by the product specification. Wrought Carbon Steel Wheels. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

The marking shall include the suffix Y immediately following the ASTM number, and preceding any other suffix. Sequential or Continuous Strand Casting S3. This analysis shall be made from adtm test sample preferably taken during the pouring of the heat and shall conform to the requirements of the product speci?

ASTM A / AM – 18b Standard Specification for Steel Forgings, General Requirements

The Forged Steel should be produced primarily by either electric-furnace, basic oxygen, vacuum-induction VIMor open-hearth melting process.

The reference blocks shall be fabricated in accordance with the procedures of Practice E Tension and hardness tests shall be conducted to evaluate mechanical properties s788 as the percentage of elongation and reduction of area.

The longitudinal axis of the specimen shall be parallel to the length of the hub, as shown in Fig. Such treatments are intended to simulate post-weld or other treatments to which the forgings will be subjected during subsequent fabrication. 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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The evacuation system shall be capable of reducing the pressure surges, which occur each time a new portion a78 steel is admitted to the vessel to increasingly lower levels, until a blank-off pressure usually less than ? Work Item s – proposed revisions of this standard.

The chemical composition thus determined shall conform to the requirements of the product speci? Siddhagiri Metals and Tubes offers forged components that are found in defense, from rifle triggers to nuclear submarine drive shafts. A minimum test temperature may be set by agreement instead of establishing the lower shelf temperature. Users of this standard are expressly advised that determination of the validity of any such patent rights, asttm the risk of infringement of such rights, are entirely their own responsibility.

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 aztm the start of the pour to a low level within 2 min.

ASTM A788 Stainless Steel Forged Fittings Suppliers

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. This suffix shall not be removed until the material speci? Open-ended molds, which are usually cooled and used, for example, in the continuous casting of steel, a7788 considered to be included in this de?

Samples for analysis may be taken from the forging or from a full-size prolongation at any point from the midradius to the outer surface of disk or other solid forgings or midway between the inner and outer surfaces of hollow or bored forgings. Superstrength Alloy Steel Forgings. The acceptance criteria aastm the examination shall be speci?

ASTM A / AM – 10 Standard Specification for Steel Forgings, General Requirements

The heat analysis of the remelted adtm shall be represented by a weighted average see Annex A2 of the a788 chemical analyses for each zone. The hot working may include upsetting. The outside diameter may be contoured if required.

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The analysis may also be taken from a mechanical test specimen or the mechanical test location as de? Intercritical Heat Treatment S4. Heavy tanks, missiles, armoured personnel carriers, shells and other heavy artillery are common defense-related applications of forged components.

Originally approved in Supplementary Requirement S4 concerns a specialized heat treat process see 3. Magnetic Particle Examination S Any straightening performed before heat treatment for properties does not require an intermediate stress-relief a7888 treatment.

Details of heat and product analyses for the evaluation of chemical composition are thoroughly discussed. 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? These elements are considered as incidental and may be present to the following maximum amounts: In order for primary deoxidation to occur during vacuum treatment, deoxidizing agents such as aluminum or silicon are not to be added to the melt in any signi?

The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order. Permission rights to photocopy the standard may also be secured from the ASTM website www. 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.

Permissible Variation Over the Speci? To counter this effect, consideration is usually given to the initial saddening see 3.