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SAE-AISI A7 Steel vs. ZA-27

SAE-AISI A7 steel belongs to the iron alloys classification, while ZA-27 belongs to the zinc alloys. There are 21 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is ZA-27.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
78
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
31
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
400 to 430

Thermal Properties

Latent Heat of Fusion, J/g 260
130
Melting Completion (Liquidus), °C 1470
480
Melting Onset (Solidus), °C 1430
380
Specific Heat Capacity, J/kg-K 470
530
Thermal Conductivity, W/m-K 37
130
Thermal Expansion, µm/m-K 12
26

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 7.7
5.0
Embodied Carbon, kg CO2/kg material 13
4.2
Embodied Energy, MJ/kg 200
80
Embodied Water, L/kg 100
570

Common Calculations

Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 25
28
Strength to Weight: Axial, points 29 to 77
22 to 24
Strength to Weight: Bending, points 25 to 48
24 to 25
Thermal Diffusivity, mm2/s 10
47
Thermal Shock Resistance, points 27 to 72
14 to 15

Alloy Composition

Aluminum (Al), % 0
25 to 28
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 2.0 to 2.9
0
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
2.0 to 2.5
Iron (Fe), % 81.4 to 87.7
0 to 0.1
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.010 to 0.020
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Zinc (Zn), % 0
69.3 to 73