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ACI-ASTM CN7MS Steel vs. ZA-8

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while ZA-8 belongs to the zinc alloys. There are 28 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
87 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
85 to 86
Elongation at Break, % 39
1.3 to 8.0
Fatigue Strength, MPa 200
51 to 100
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
34
Tensile Strength: Ultimate (UTS), MPa 540
210 to 370
Tensile Strength: Yield (Proof), MPa 230
210 to 290

Thermal Properties

Latent Heat of Fusion, J/g 340
110
Maximum Temperature: Mechanical, °C 1040
100
Melting Completion (Liquidus), °C 1400
400
Melting Onset (Solidus), °C 1350
380
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 12
120
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 28
11
Density, g/cm3 7.9
6.3
Embodied Carbon, kg CO2/kg material 5.1
3.3
Embodied Energy, MJ/kg 71
62
Embodied Water, L/kg 180
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
2.8 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 140
260 to 490
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
9.3 to 17
Strength to Weight: Bending, points 19
12 to 18
Thermal Diffusivity, mm2/s 3.2
42
Thermal Shock Resistance, points 13
7.6 to 13

Alloy Composition

Aluminum (Al), % 0
8.0 to 8.8
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
0.8 to 1.3
Iron (Fe), % 45.4 to 53.5
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 2.5 to 3.5
0 to 0.045
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
89.7 to 91.2