ASTM-A31:14(R2020) pdf free download – Standard Specification for Steel Rivets and Bars for Rivets, Pressure Vessels.
5.2 Heat Analysis—An analysis of each heat of steel shall he made by the bar manufacturer to determine for Grades A and B the percentages of carbon, manganese. phosphorus. and sulfur. This analysis shall he made from a test ingot taken during the pouring of the heat. The chemical composition thus determined shall be reported to the purchaser or his representative and shall conform to the requirements for heat analysis in accordance with Table 1.
5.3 Product Analysis—An analysis may be made by the purchaser from finished materials representing each heat. The chemical composition thus determined shall conform to the requirements for product analysis prescribed in Table 1.
5.4 Application of heats of steel to which bismuth, selenium, tellurium, or lead has been intentionally added shall not be permitted.
5.5 Chemical analyses shall be performed in accordance with Test Methods, Practices, and Terminology A751.
6. Mechanical Properties
6. 1 Rivet Bend Tests:
6.1.1 The rivet shank of Grade A steel shall stand being bent cold through 1800 flat on itself, as shown in Fig. 1, without cracking on the outside of the bent portion.
6.1.2 The rivet shank of Grade B steel shall stand being bent cold through 180° without cracking on the outside of the bent portion in accordance with Table 2.
6.2 Rivet Flattening Tests—The rivet head shall stand being flattened, while hot, to a diameter 2’/2 times the diameter of the shank, as shown in Fig. 2, without cracking at the edges.
6.3 Bar Tensile Properties—Bars shall conform to the tensile requirements in accordance with Table 3.
6.4 Bar Bend Tests:
6.4.1 The test specimen for Grade A steel bars shall stand being bent cold through 180° flat on itself without cracking on the outside of the bent portion.
12.2 The inspector representing the purchaser shall have free entry at all times, while work on the contract of the purchaser is being performed. to all parts of the manufacturer’s works that concern the manufacture of the material ordered. The manufacturer shall afford the inspector all reasonable facilities, without charge, to satisfy him that the material is being furnished in accordance with this specification. All tests (except product analysis) and inspection shall be made at the place of manufacture prior to shipment. unless otherwise specified, and shall be so conducted as not to interfere unnecessarily with the operation of the works.
13. Rejection and Rehearing
13.1 Rivets—Rivets that fail to conform to the requirements of this specification may bc rejected. Rejection should be reported to the producer or supplier promptly and in writing. In case of dissatisfaction with the results of the Lest, the producer or supplier may make claim for a rehearing.
13.2 Bars—Rejection and rehearing shall be in accordance with Specification A29/A29M.
14. Certilication
14.1 When specified on the purchase order, the manufacturer shall furnish certification that the material was manufactured and tested in accordance with this specification together with a report of the heat analysis (5.2) and mechanical property test results (Section 6) as applicable to the product ordered. The report shall include the manufacturer’s name, ASTM designation, grade, heat number (bars only), and authorized signature.
15. Responsibility.