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Zinc ZA-27 (Zn-27Al-2Cu-0.015Mg), Sand Cast
Categories: Metal; Nonferrous Metal; Zinc Alloy

Material Notes: Recommended Casting Temperature 515-545°C

Key Words: Zinc Foundry Alloy; UNS Z35841; UNS Z35840
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Physical PropertiesMetricEnglishComments
Density 5.02 g/cc0.181 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 9090500 kg load; 10 mm hardened steel ball
Hardness, Knoop 143143Estimated from Brinell Value
Hardness, Rockwell A 45.545.5Estimated from Brinell Value
Hardness, Rockwell B 7272Estimated from Brinell Value
Hardness, Vickers 129129Estimated from Brinell Value
Tensile Strength, Ultimate 420 MPa60900 psi
Tensile Strength, Yield 365 MPa52900 psi0.2% Offset
Elongation at Break 4.50 %4.50 %in 5 cm
Modulus of Elasticity 77.9 GPa11300 ksi
Compressive Strength 330 MPa47900 psi0.1% offset
Charpy Impact, Unnotched 48.0 J
@Thickness 6.35 mm
35.4 ft-lb
@Thickness 0.250 in
square bar
Fatigue Strength 172 MPa
@# of Cycles 5.00e+8
24900 psi
@# of Cycles 5.00e+8
Reverse Bend
Fracture Toughness 23.7 MPa-m½21.6 ksi-in½
Shear Strength 292 MPa42400 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000580 ohm-cm0.00000580 ohm-cm
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 128 J/g55.1 BTU/lb
CTE, linear 26.0 µm/m-°C
@Temperature 20.0 - 200 °C
14.4 µin/in-°F
@Temperature 68.0 - 392 °F
Specific Heat Capacity 0.525 J/g-°C0.125 BTU/lb-°F
Thermal Conductivity 125 W/m-K868 BTU-in/hr-ft²-°F
Melting Point 376 - 484 °C709 - 903 °F
Solidus 376 °C709 °F
Liquidus 484 °C903 °F
 
Processing PropertiesMetricEnglishComments
Casting Temperature 515 - 545 °C959 - 1010 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 27.0 %27.0 %
Copper, Cu 2.20 %2.20 %
Magnesium, Mg 0.015 %0.015 %
Zinc, Zn 71.0 %71.0 %

References for this datasheet.

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MZN27A / 14520

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