Process SAND SAND SAND SAND SAND SAND SAND SAND PERM SAND SAND SAND SAND SAND
Alloy 319 319 356 356 356 356 535 713 319 319 333 356 356 356
Heat Treat F T-6 F T-51 T-6 T-7 F T-6 T-6 F T-51 T-6
Chemical Composition (in '%')
Silicon 5.5-6.6 5.5-6.7 6.5-7.5 6.5-7.6 6.5-7.7 6.5-7.8 0.15 0.25 5.5-6.6 5.5-6.7 8-10 6.5-7.5 6.5-7.6 6.5-7.7
Iron 1 2 0.6 0.6 0.6 0.6 0.15 1.1 1 2 1 0.6 0.6 0.6
Copper 3.0-4.0 3.0-4.0 0.25 0.25 0.25 0.25 0.05 0.4-1.0 3.0-4.0 3.0-4.0 3.0-4.0 0.25 0.25 0.25
Manganese 0.5 0.5 0.35 0.35 0.35 0.35 0.1-0.25 0.6 0.5 0.5 0.5 0.35 0.35 0.35
Magnesium 0.1 0.1 0.2-0.45 0.2-0.46 0.2-0.47 0.2-0.48 6.2-7.5 0.2-0.5 0.1 0.1 0.05-0.5 0.2-0.45 0.2-0.46 0.2-0.47
Chromium 0.35
Nickel 0.35 0.35 0.15 0.35 0.5
Zinc 1 1 0.35 0.35 0.35 0.35 7.0-8.0 1 1 1 0.35 0.35 0.35
Titanium 0.25 0.25 0.25 0.25 0.25 0.25 0.1-0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
other 0.5 0.5 0.15 0.15 0.15 0.15 0.15 0.25 0.5 0.5 0.5 0.15 0.15 0.15
Strength (in 1000 lbs)
Tensile ultimate 23 31 19 23 30 31 35 32 28 34 35 21 25 33
Yield 13 20 13 16 20 29 18 22 14 27 30 13 20 22
% Elongation 1.5 105 2 2 3 2 9 3 1.5 2 1.5 3 2 3
Brinell 55-85 65-95 40-70 45-75 55-90 60-90 60-90 60-90 70-100 75-105 85-115 40-70 55-85 65-95
Characteristics (a=excelent, f=poor)
Pressure tight b b a a a a f d b b b a a a
Heat treated yes yes yes yes yes yes no no yes yes yes yes yes yes
Corrosion rest. c c b b b b a c c c c b b b
Machineabiliy c b c b b b a a c b c c a a
Polishing d d d d d d a a d d c d d d
Anodizing d d d d d d a a d d d d d d
Weldability b b a a a a d d b b c a a a
Physical Properties
Electric conduct 27 27 39 39 39 39 23 30 27 27 29 39 39 39
Thermal conduct 0.260 0.260 0.360 0.360 0.360 0.360 0.240 0.290 0.260 0.260 0.290 0.360 0.360 0.360
Density 0.101 0.101 0.097 0.097 0.097 0.097 0.094 0.102 0.101 0.101 0.1 0.097 0.097 0.097
Notes
Chemcal specifications are in percents. Strength numbers in 1000's pounds
Characteristics are graded A = Excelent, B = Good, C = Average, D = Fair, F = Poor
Sand = Sand Casting, Perm = Permanent mold casting


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