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SAE-AISI A9 Steel vs. ZA-12

SAE-AISI A9 steel belongs to the iron alloys classification, while ZA-12 belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
83
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 74
33
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
260 to 400

Thermal Properties

Latent Heat of Fusion, J/g 280
120
Melting Completion (Liquidus), °C 1460
430
Melting Onset (Solidus), °C 1410
380
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 35
120
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
42

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
11
Density, g/cm3 7.8
6.0
Embodied Carbon, kg CO2/kg material 4.7
3.4
Embodied Energy, MJ/kg 70
64
Embodied Water, L/kg 82
440

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 73
12 to 19
Strength to Weight: Bending, points 24 to 46
15 to 20
Thermal Diffusivity, mm2/s 9.6
43
Thermal Shock Resistance, points 25 to 66
9.4 to 14

Alloy Composition

Aluminum (Al), % 0
10.5 to 11.5
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
0.5 to 1.2
Iron (Fe), % 87 to 90.5
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
0 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 1.2
0 to 0.060
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
87.1 to 89