Some tests of light aluminum casting alloys — the effect of heat treatment. . Tests of Light Casting Alloys 17. • «1 689116 »qlj e«siVt3 18 Technologic Papers of the Bureau of Standards These results are apparently best expressed in the form ofcurves or in such a table, but the following equations of the usualtype are calculated from the mean curves: For the E series 5 = 68 ooo N~°-132For the Z series 5 = 93 000 N~°-159For the G series 5 = 65 000 N~°-139 When 5 = the maximum fiber stress in pounds per square = number of alternations to rupture. These equations may be compared
Some tests of light aluminum casting alloys — the effect of heat treatment. . Tests of Light Casting Alloys 17. • «1 689116 »qlj e«siVt3 18 Technologic Papers of the Bureau of Standards These results are apparently best expressed in the form ofcurves or in such a table, but the following equations of the usualtype are calculated from the mean curves: For the E series 5 = 68 ooo N~°-132For the Z series 5 = 93 000 N~°-159For the G series 5 = 65 000 N~°-139 When 5 = the maximum fiber stress in pounds per square = number of alternations to rupture. These equations may be compared with that given (loc. cit.)by Ehnendorf: S=48 OOO JV-0-113 for cast commercial aluminum. It appears that the resistance tothe action of alternating stresses does not increase in proportionas the tensile strength or the hardness of the alloy according to Ehnendorf aluminum alone will withstand asmany alternations of stress at fiber stresses of from 7000 to 10 000pounds per square inch as will the alloy G, which has a tensilestrength from 20 to 50 per cent higher than that of the alumi
Size: 1275px × 1961px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidsometestsofl, bookyear1919
