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ASTM A387 Grade 21L Class 1 vs. Zamak 2

ASTM A387 grade 21L class 1 belongs to the iron alloys classification, while Zamak 2 belongs to the zinc alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21L class 1 and the bottom bar is Zamak 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
100
Elastic (Young's, Tensile) Modulus, GPa 190
87
Elongation at Break, % 21
6.0
Fatigue Strength, MPa 160
59
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 74
33
Shear Strength, MPa 310
320
Tensile Strength: Ultimate (UTS), MPa 500
360
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 260
130
Maximum Temperature: Mechanical, °C 480
95
Melting Completion (Liquidus), °C 1470
390
Melting Onset (Solidus), °C 1430
380
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 41
110
Thermal Expansion, µm/m-K 13
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
35

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
12
Density, g/cm3 7.9
6.5
Embodied Carbon, kg CO2/kg material 1.8
3.0
Embodied Energy, MJ/kg 23
57
Embodied Water, L/kg 62
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
20
Resilience: Unit (Modulus of Resilience), kJ/m3 140
420
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
15
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 11
41
Thermal Shock Resistance, points 14
11

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
2.5 to 3.3
Iron (Fe), % 94.4 to 96.1
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.030
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
92.2 to 94