Standard test specimens of zinc bronze (Cu88, Sn10, Zn2)--Parts I and II . 49 700 3494 A 1225 V. G. S. 49 600 3487 A 1180 V. G. S. 49 100 3452 A 1255 F. D. S. 50 500 3550- D 1120 Chill 49 300 3466 A 1255 F. D. S. 35 600 2503 A 1270 V. D. S. 29 300 2060 A 1270 V. D. S. 42 500 2988 Elonga-tion in 2inches Reduc-tion ofarea , Per Per [Shapes: A=cast to size, B= cylindrical, C=barrel, D=chill. Sand: F. D. poured
Standard test specimens of zinc bronze (Cu88, Sn10, Zn2)--Parts I and II . 49 700 3494 A 1225 V. G. S. 49 600 3487 A 1180 V. G. S. 49 100 3452 A 1255 F. D. S. 50 500 3550- D 1120 Chill 49 300 3466 A 1255 F. D. S. 35 600 2503 A 1270 V. D. S. 29 300 2060 A 1270 V. D. S. 42 500 2988 Elonga-tion in 2inches Reduc-tion ofarea , Per Per [Shapes: A=cast to size, B= cylindrical, C=barrel, D=chill. Sand: F. D. poured flat in dry G. flat in green sand, V. D. vertical in dry sand, V. G. poured vertical ingreen sand, Chill= poured in open iron chill moldj By referring to the table it will be noted that in specimens 531and 591 the elongation was identical, but there was a differencein their reductions of area and tensile strength in which the cast-to-size shape exceeded the cylindrical shape by over 5000 poimds Bureau of Standards Technologic Paper No. 59.
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