Aluminum

Aluminum Castings

Many foundries only run a handful of common alloys. At Warner Bros. Foundry Company our reputation is on running a wide range of aluminum and copper-based alloys.

If you don’t see any alloy of interest, listed below, please let us know. We are happy to quote other alloys. Only the highest quality Certified Ingot is used for the production of our Aluminum casting.

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Aluminum Alloy Specs

Composition

Designations and nominal compositions of common aluminum alloys used for sand casting.

AA Number Former AA designations Former ASTM number Cu Mg Mn Si Others
A206.0 4.6 0.25 0.35 0.05 (Max) 0.22 Ti, 0.10 Fe (Max)
319.0 319, Allcast SC64D 3.50 6.00
C355.0 C355 SG51B 1.20 0.50 0.10 (Max) 5.00 0.60 Fe (Max), 0.35 Zn (Max)
A356.0 A356 SG70B 0.20 (Max) 0.35 0.10 (Max) 7.00 0.20 Fe (Max), 0.10 Zn (Max)
A357.0 A357 0.60 7.00 0.15 Ti, 0.005 Be
535.0 Almag 35 GM70B 6.80 0.18 0.18 Ti
713.0 613, Tenzaloy ZC81A,B 0.70 0.35 7.5 Zn, 0.7 Cu
771.0 Precedent 71A ZG71B 0.90 7.0 Zn, 0.13 Cr, 0.115 Ti
850.0 750 1.00 6.2 Sn, 1.0 Ni

 

Characteristics

Characteristics of common aluminum alloys used in sand casting.

Alloy Fluidity Resistance to hot cracking Pressure tightness Heat Treatment Strength at elevated temperatures General corrosion resistance Machining Polishing Anodizing Apperance Weldability
319.0 2 2 2 Optional 3 3 3 4 4 2
C355.0 1 1 1 Yes 2 3 3 3 4 1
A356.0 1 1 1 Yes 3 2 3 4 4 1
A357.0 1 1 1 Yes 2 2 3 4 4 1
535.0 5 4 5 Optional 3 1 1 1 1 4
713.0 3 4 4 No 4 3 1 1 1 4
771.0 3 4 4 Yes 4 3 1 1 1 4
850.0 4 5 5 Yes 5 4 1 3 5

Characteristics are comparatively rated from 1 to 5; 1 is the highest or best possible rating.

 

Alloy Uses

Alloy Uses
A206.0 Gear housings, truck spring hanger, cylinder heads, turbine, supercharger impellers
319.0 Engine crankcase covers, electrical boxes, gear boxes
C355.0 Air-compressor fittings, crankcase, gear housings, hydraulic fittings
A356.0 Automobile transmission cases, oil pans and rear-axle housings
A357.0 Pump bodies, cylinder blocks for water cooled engines
535.0 Marine industry, corrosive prone applications
713.0 General-purpose casting alloy for applications that require strength without heat treament or that involve brazing

 

Test Bar

Typical Tensile Properties for separately cast test bars of common aluminum casting alloys.

Tensile strength Yield strength Shear strength Compressive yield strength
Alloy Temper Mpa ksi Mpa ksi Mpa ksi Mpa ksi Elongation %
A206.0 T7 435 63 345 50 257 37 372 54 11.7
319.0 F 185 27 125 18 150 22 130 19 2
319.0 T6 250 36 165 24 200 29 170 25 2
355.0 T6 240 35 175 25 195 28 180 26 3
355.0 T7 265 38 250 36 195 28 260 38 0.5
356.0 T6 230 33 165 24 180 26 170 25 3.5
356.0 T7 235 34 210 30 165 24 215 31 2
535.0 F 275 40 140 20 190 27.5 162 23.5 13
713.0 T5 210 30 150 22 180 26 170 25 3
771.0 T71 330 48 310 45 370 54 2

Typical Properties & Characteristics of Aluminum Sand Casting

Typical Aluminum Alloys (a) Resistance to Corrosion (b) Typical Mechanical Properties
AA Former AA Designation ASTM Spec. No. Federal Spec. No. SAE Alloy No. Approx. Weight, lb./in.3 General Stress Corrosion Cracking Relative Machinability (c) Castability (k) Weldability (Arc) (d) Ultimate Tensile Strength, ksi (i) Yield Strength Tension, ksi (e) (i) Elongation, Percentage in 2 in. (Round Specimen, 1/2" Dia.) (f) (i) Shear Strength, ksi (g) Fatigue Endurance Limit, ksi (h) Brinell Hardness (500-kg Load, 10-mm Ball) (j)
206.0-T4 ... B26 QQ-A-601 0.101 2 B 3 2 2 51 36 7 40 9.5 104
A206.0-T7 ... B26 QQ-A-601 0.101 2 B 3 2 2 63 50 3 37 10 122
319.0-F 319, Allcast B26 QQ-A-601 329 0.101 3 B 4 4 4 27 18 2 22 10 70
319.0-T5 319, Allcast …. 0.101 3 B 3 2 2 30 26 1.5 24 11 80
319.0-T6 319, Allcast B26 QQ-A-601 329 0.101 3 C 3 2 2 36 24 2 29 11 80
355.0-T6 355 B26 …. 322 0.098 3 A 3 1 2 35 25 3 28 9 80
355.0-T7 355 B26 QQ-A-601 0.098 3 A 3 1 2 38 36 0.5 38 10 85
C355.0-T6 C355 B26 …. 0.098 3 A 3 1 2 38 28 5 28 10 90
356.0-T6 356 B26 QQ-A-601 323 0.098 2 A 4 1 2 33 24 3.5 26 8.5 70
356.0-T7 356 B26 QQ-A-601 0.098 2 A 4 1 2 34 30 2 24 9 75
A356.0-T6 A356 …. 0.096 2 A 4 1 2 37 27 5 20 8.5 80
535.0-F Almag 35 B26 QQ-A-601 324 0.095 1 A 1 5 4 40 21 13 28 10 70
713.0-T5 613, Tenzaloy B26 QQ-A-601 315 0.102 2 B 1 4 4 35 25 4 26 9 74
771.0-T5 Precedent 71A B26 QQ-A-601 ... 0.102 2 B 1 4 4 42 38 1.5 ... ... 100
771.0-T6 Precedent 71A B26 QQ-A-601 ... 0.102 2 B 1 4 4 42 35 5 ... ... 90

Zinc Alloy Properties

ALLOY ZA-8 ZA-12 ZA-27
Mechanical Properties Sand Cast / Perm Mold / Die Cast Sand Cast / Perm Mold / Die Cast Sand Cast / Perm Mold / Die Cast
Ultimate Tensile Strength
psi x 103
38/32-37/54 40-46/45-50/58 58-64/45-47/61
Yield Strenght-0.2% Offset
psi x 103
29/30/42 31/39/46 54/37/55
Elongation % in 2" 1-2/1-2/6-10 1-3/1-3/4-7 3-6/8-11/1-3
Shear Strength psi x 103
na/35/40 37/na/43 42/33/47
Hardness Brinell 85/85-90/95-110 89-105/89-105/95-115 110-120/90-110/105-125
Impact Strength ft-lb
156/na/313
193/na/213
353/433/93
Fatigue Strength Rotary
Bend (psi x 103 )
5 x 108 cycles
na/7.5/15 15/na/17       25/15/21
Compressive Yield Strength
0.1% Offset psi x 103
29/31/37 33/34/39 48/37/52
Modulus of Elasticity
psi x 106
12.4/12.47/na
na/12^7/na
na/11.37/na
Poisson's Ratio na/0.29/na na/.3/na na/.32/na
Physical Properties
Density lb/cu in 0.227 0.218 0.181
Melting Range 0F
707-759 710-810 708-903
Electrical Conductivity %IACS 27.7 28.3 29.7
Thermal conductivity
BTU/ft/hr/ 0F
66.3 67.1 72.5
Coefficient of thermal Expan
68-2120Fuin/in/ 0F
12.9 13.4 14.4
Specific Heat BTU/lb/ 0F
Pattern or Die Shrinkage in/in
0.104
na/ 1/8 in/ft/ .007
0.107
1/8in/ft /5/32in /ft/.0075
0.125
5/32in/ft /5/32in/ft /.008

 

Chemical & North American Color Code Requirements

ASTM B240
ZA-8
ZA-8
ZA-12
ZA-12
ZA-27
ZA-27
Aluminum 8.2-8.8 10.8-11.5 25.5-28.0
Magnesium 0.02-0.03 0.02-0.03 0.012-0.020
Copper 0.9-1.3 0.5-1.2 2.0-2.5
Iron, Max 0.035 0.05 0.07
Lead, Max 0.005 0.005 0.005
Cadmium, Max 0.005 0.005 0.005
Tin, Max 0.002 0.002 0.002
Nickel ... 0.005-0.020 ...
Zinc Remainder Remainder Remainder

 

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