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Tham khảo tài liệu 'machine design databook episode 1 part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Downloaded from Digital Engineering Library @ McGraw-Hill www.digitalengineeringlibrary.com Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. TABLE 1-20 Mechanical properties of high tensile cast steel Tensile strength min Tst Yield strength or 0.5 proof stress min TS Grade Designation MPa kpsi MPa kpsi 1 cs 640 640 92.8 390 56.7 2 cs 700 700 101.5 560 81.2 3 cs 840 840 121.8 700 101.5 4 cs 1030 1030 149.4 850 123.3 5 cs 1230 1230 178.3 1000 145.1 a a area of cross section. Source-. IS 2644 1979. Reduction in area min Elongation min gauge length 5.65 v F Brinell hardness min Up Izod impact strength min J ft-lbf 35 15 190 30 22.1 30 14 207 30 21.1 28 12 248 29 20.6 20 8 305 20 14.5 12 5 355 ESOF ENGINEERING Downloaded from Digital Engineering Library @ McGraw-Hill www.digitalengineeringlibrary.com Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. TABLE 1-21 Chemical composition of tool steels Steel designation c Si Mn T 140 w 4 Cr 50 1.30-1.50 0.10-0.35 0.25-0.50 T 133 1.25-1.40 0.10-0.30 0.20-0.35 T 118 1.10-1.25 0.10-0.30 0.20-0.35 T 70 0.65-0.75 0.10-0.30 0.20-0.35 T 85 0.80-0.90 0.10-0.35 0.50-0.80 T 75 0.70-0.80 0.10-0.35 0.50-0.80 T 65 0.60-0.70 0.10-0.35 0.50-0.80 T 215 Cr 12 2.00-2.30 0.10-0.35 0.25-0.50 T 160 Cr 12 150-1.70 0.10-0.35 0.25-0.50 T 110 W2 Cr 1 1.00-1.20 0.10-0.35 0.90-1.30 T 105 w 2 Cr 60 V 25 0.90-1.20 0.10-0.35 0.25-0.50 T 90 Mn 2 w 50 Cr 45 0.85-0.95 0.10-0.35 1.25-1.75 T 105 Cr 1 0.90-1.20 0.10-0.35 0.20-0.40 T 105 Cr 1 Mn 60 0.90-1.20 0.10-0.35 0.40-0.80 T 55 Cr 70 0.50-0.60 0.10-0.35 0.60-0.80 T 55 Si 2 Mn 90 Mo 33 0.50-0.60 1.50-2.00 0.80-1.00 T 50 Cr 2 V 23 0.45-0.55 0.10-0.35 0.50-0.80 T 60 Ni 1 0.55-0.65 0.10-0.65 0.50-0.80 T 30 Ni 4 Cr 1 0.26-0.34 0.10-0.35 0.40-0.70 T 55 Ni 2 Cr 65 Mo 30 0.50-0.60 0.10-0.35 0.50-0.80 T 33 w 9 Cr 3 V 38 0.25-0.40 0.10-0.35 0.20-0.40 T 35 Cr 5 Mo V
