Sand Cast Zinc-Aluminum 27
Wrought Aluminum Alloys
Property Overview
Density5g/cm³
Elastic Modulus78GPa
Tensile Strength420MPa
Yield Strength370MPa
Brinell Hardness110HB
Maximum Service Temperature120°C
Chemical Composition
NI
0 to 0.020%
SI
0 to 0.080%
CU
2.0 to 2.5%
AL
25 to 28%
CD
0 to 0.0060%
MG
0.010 to 0.020%
PB
0 to 0.0060%
SN
0 to 0.0030%
ZN
69.3 to 73%
FE
0 to 0.1%
Mechanical
Compressive (Crushing) Strength
330 MPa
Elastic (Young's, Tensile) Modulus
78 GPa
Elongation at Break
4.5 %
Fatigue Strength
170 MPa
Fracture Toughness
24 MPa-m 1/2
Poisson's Ratio
0.27
Shear Modulus
31 GPa
Shear Strength
290 MPa
Tensile Strength: Ultimate (UTS)
420 MPa
Tensile Strength: Yield (Proof)
370 MPa
Hardness
Brinell Hardness
110
Knoop Hardness
140
Rockwell B Hardness
72
Physical
Density
5.0 g/cm 3
Thermal
Latent Heat of Fusion
130 J/g
Maximum Temperature: Mechanical
120 °C
Melting Completion (Liquidus)
480 °C
Melting Onset (Solidus)
380 °C
Solidification (Pattern Maker's) Shrinkage
1.3 %
Specific Heat Capacity
530 J/kg-K
Thermal Conductivity
130 W/m-K
Thermal Diffusivity
47 mm 2 /s
Thermal Expansion
26 µm/m-K
Thermal Shock Resistance
15 points
Electrical
Electrical Conductivity: Equal Volume
30 % IACS
Electrical Conductivity: Equal Weight (Specific)
53 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
18 MJ/m 3
Resilience: Unit (Modulus of Resilience)
870 kJ/m 3
Stiffness to Weight: Axial
8.6 points
Stiffness to Weight: Bending
28 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
25 points
Environmental
Base Metal Price
11 % relative
Embodied Carbon
4.2 kg CO 2 /kg material
Embodied Energy
80 MJ/kg
Embodied Energy
80 MJ/kg 34 x 10 3 BTU/lb
Embodied Water
570 L/kg
Embodied Water
570 L/kg 68 gal/lb
Registered Designations & Aliases
Sand Cast Zinc-Aluminum 27
Standards
ASTM B86 ASTM B86: Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
EN 12844 EN 12844: Zinc and zinc alloys - Castings - Specifications
EN 12844 EN 12844: Zinc and zinc alloys - Castings - Specifications ASTM B86: Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings Corrosion Resistance of Zinc and Zinc Alloys, Frank C. Porter, 1994 Zinc Handbook: Properties, Processing, and Use In Design, Frank C. Porter, 1991 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993