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ASTM A387 Grade 21 Steel vs. Z13004 Zinc

ASTM A387 grade 21 steel belongs to the iron alloys classification, while Z13004 zinc belongs to the zinc alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21 steel and the bottom bar is Z13004 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
87
Elongation at Break, % 21
30
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 74
35
Tensile Strength: Ultimate (UTS), MPa 500 to 590
93
Tensile Strength: Yield (Proof), MPa 230 to 350
76

Thermal Properties

Latent Heat of Fusion, J/g 260
110
Maximum Temperature: Mechanical, °C 480
90
Melting Completion (Liquidus), °C 1470
410
Melting Onset (Solidus), °C 1430
390
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
37

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
11
Density, g/cm3 7.9
6.6
Embodied Carbon, kg CO2/kg material 1.8
2.8
Embodied Energy, MJ/kg 23
53
Embodied Water, L/kg 62
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
26
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
33
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18 to 21
3.9
Strength to Weight: Bending, points 18 to 20
7.0
Thermal Diffusivity, mm2/s 11
44
Thermal Shock Resistance, points 14 to 17
2.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0020
Cadmium (Cd), % 0
0 to 0.0030
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
0 to 0.0030
Iron (Fe), % 94.4 to 96
0 to 0.0030
Lead (Pb), % 0
0 to 0.0030
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 0
99.985 to 100