ASTM A705:17 pdf download

ASTM A705:17 pdf download.Standard Specification for Age-Hardening Stainless Steel Forgings.
5.5 The grain size shall be as fine as practicable and precautions shall be taken to minimize grain growth.
5.6 Material of types other than XM-9 shall be furnished in the solution-annealed condition, or in the equalized and over- tempered condition. as noted in Table 2, unless otherwise specified by the purchaser.
5.6.1 Types 630, XM-16, and XM-25 may be furnished in the solution-annealed or age-hardened condition.
6. Chemical Composition
6.1 The steel shall conform to the chemical composition limits specified in Table 1.
6.2 Methods and practices relating to chemical analysis required by this specification shall he in accordance with Test Methods, Practices, and Terminology A75 1.
7. Mechanical Properties
7. 1 The material, as represented by mechanical test specimens, shall conform to the mechanical property requirements specified in Table 2 and shall be capable of developing the properties in Table 3 when heat treated as specified in Table
7.2 The yield strength shall be determined by the offset method as described in the current edition of Test Methods and Definitions A370. The limiting permanent offset shall be 0.2 % of the gage length of the specimen.
7.3 The impact strength shall be determined at 70 to 80°F [20 to 25°C], by Charpy V-notch specimen Type A as described in Test Methods and Definitions A370.
7.4 Material tensile tested and, when specified, impact tested in the transverse direction (perpendicular to the forging flow lines) and meeting the requirements shown in Table 3need not be tested in the longitudinal direction.
7.5 Samples cut from forging shall conform to the mechani-cal properties of Table 3 when heat treated as specified inTables 2 and 3 and tested in accordance with Test Methods andDefinitions A370.
8. Prolongations for Tests
8.1 Subject to Section 7, the forgings shall be produced withprolongations for testing,unless otherwise specified. Theproducer may elect to submit an extra forging to represent eachtest lot instead of prolongations.or the test specimens can betaken from the forgings themselves.
9. Number of Tests
9.1 For all classes of forgings weighing from 5000 to 7000lb[2300 to 3200 kg] each,at least one tension test shall bemade from each forging.
9.2 For all classes of forgings weighing more than 7000 lb[3200 kg] each,one tension test shall be made from each endof each forging. In the case of ring forgings， the tension testspecimen shall be removed from each of two locations on theperiphery, approximately 180° apart, or insofar as practicable,from opposite ends of the forging.
9.3 For forgings weighing less than 5000 lb [2300 kg] cach,one tension test shall be made from each size classification forcach heat in cach heat-treating charge. Where continuousheat-treating furnaces are used, tests shall be made on 10 %o ofthe forgings of each size classification from each heat subjectedto the same heat-treatment practice.
10. Keywords
10.l age-hardening stainless steel; precipitation hardeningstainless steel; stainless steel forgings.