. The Iron and steel magazine. 2 1-5 Type II. Cu = = 84 Sn = 16 Quenching Temperature Tensile Strength,Kilos per sq. mm. Elongation % Reduction % Not quenched 25 300 22 ? 0 400 ? 0 500 5-6 550 5-9 600 ? 3-6 650 363 ? 700 34-4 750 ? 5 Type III. CU: = 87 Sn = i; 3 Quenching Temperature Tensile Strength,Kilos per sq. mm. Elongation % Reducticjn % Not quenched 13-7 3 500 3 550 23-7 ? 5 600 10 650 9 700 13 750 ? 19 800 25-4 9 Copper Alloys 131 Typk IV. Cu ^ 91 Quenching Temperature Tensile Strengt
. The Iron and steel magazine. 2 1-5 Type II. Cu = = 84 Sn = 16 Quenching Temperature Tensile Strength,Kilos per sq. mm. Elongation % Reduction % Not quenched 25 300 22 ? 0 400 ? 0 500 5-6 550 5-9 600 ? 3-6 650 363 ? 700 34-4 750 ? 5 Type III. CU: = 87 Sn = i; 3 Quenching Temperature Tensile Strength,Kilos per sq. mm. Elongation % Reducticjn % Not quenched 13-7 3 500 3 550 23-7 ? 5 600 10 650 9 700 13 750 ? 19 800 25-4 9 Copper Alloys 131 Typk IV. Cu ^ 91 Quenching Temperature Tensile Strength,Kilos per sq. mm. Xot quenched 2 5-4 400 500 6co 25 700 25 8co 900 3-9 Type V. Cu = 95 Quenching Temperature Tensile Strength,Kilos per sq. mm. Not quenched 300 450 550 234 600 650 19-3 700 193 750 800 Sn Elongation % R ?duclion % 14 11-5 23-5 23-5 7-1 30 3-9 2 Sn = 5 Elongation % R eduction % ? 20 27-5 I 27 28 ? 27 25 20 7-5 22 ? 3. *^ ioo Zoo loo 1400 500 600 700 Soo aoo Diagram ii. Type i. Cu, 79%; Sn, 21% If these results are compared with those shown indiagramsII to 15, the following conclusions may be drawn: I. In the case of alloys containing over 92 per cent copper,the tenacity is slight!}^ increased by quenching between 400°and 6co°, and the elongation is similarly affected. 132 The Iron and Steel Magazine 2. In the case of alloys containing less than 92 per centcopper, the tenacity and the elongation increase decidedly as HO ^o Zo iO • V V \ \ / \ 0 100 200 500 tOO SOO ^00 JOO $00 ^00 Diagram 12. Type 2. Cu, 84%; Sn, 16% uo 30 lo 10 / —7 \ // 0 100 loo loo uoo 5oo 600 JCO %00 ^00Diagram 13. Type 3. Cu, 87%; Sn, 13% soon as the quenching temperature exceeds 500°. This is infull accord with Messrs. Heycock and Nevilles diagram. Maximum strength is reached, whatever the composition, ata quenching temperature of about 600 degrees. Copper Alloys 133 Maximum elongation on
Size: 1704px × 1466px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectiron, bookyear1898
