ASTM-B208:14(R2021) pdf free download – Standard Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings.
5.3.1 Test bar coupons shall he taken in a longitudinal direction from the continuous cast product at the mid-wall of hollow castings or at one-half the distance between the center and the side of solid castings as illustrated in Fig. 6.
5.3.2 For irregular shapes, the location of the test bar coupon shall he as agreed upon between the manufacturer and purchaser.
5.3.3 Transverse test specimens are allowed for continuous cast product having a cross section thickness, diameter, or wall of 4 in. or more. The cross sections are the diameter of a round solid, the distance across flats of a solid hexagon, the thickness of a rectangle, and the wall thickness of a tube.
5.4 Permanent Mold castings—The test bar coupons shall be made in the permanent die for test bars shown in Fig. 7 or Fig. 9. The runner, gate, and risers shall be coated with an insulating spray. The test bar cavity shall be coated with a graphite spray. Test bar casting shall be poured in the tilted position and rotated to the vertical position during pouring.
6. Test Specimens
6.1 Sand Cast—Tension test specimens shall he machined from the coupons described in 5.1.1 and 5.1.2 and shown in Fig. 1, Fig. 2, and Fig. 3. They shall he of the form and dimensions shown in Fig. 11 for the 0.500-in, standard test bar specimen.
6.1.1 In the case of test specimens prepared from the coupons in Fig. 4, the manufacturer shall have the option of testing the specimens without machining the gage length. If the specimens are machined, the gage length, parallel sections, and fillets shall be machined to the dimensions shown in Fig. 11.
6.2 Centrifugally cast—Tension test specimens shall be machined from the coupons described in 5.2.1 and shown in Fig. 5. They shall he of the form and dimensions shown in
6.3 Continuous Cast—Tension test specimens shall be machined from the continuous cast product as described in 5.3.1 and shown in Fig. 6. They shall be of the form and dimensions as shown in Fig. 11.
6.4 Permanent Mo/d—Tension test specimens shall be cut from the test bar coupon shown in Fig. 7 or Fig. 9 and shall be of the form and dimensions shown in Fig. 8 and Fig. 10.
NO1E I—The dimensions for the die shown in Fig. 7 or Fig. 9 are standard rule.” After solidification and cooling, a tension test specimen of the form and dimensions of Fig. 8 and Fig. 10 will he produced by the die shown in Fig. 7 or Fig. 9.
6.4.1 The gage length and reduced section shall be as cast, hut the ends may he machined to fit the holders of the testing machine in such a way that the load shall he axial.
7. Keywords
7. 1 copper alloys: copper alloy castings: tension test specimens.