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SAE-AISI 1040 Steel vs. Grade 702C Zirconium

SAE-AISI 1040 steel belongs to the iron alloys classification, while grade 702C zirconium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1040 steel and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
180
Elastic (Young's, Tensile) Modulus, GPa 190
97
Elongation at Break, % 13 to 20
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
36
Tensile Strength: Ultimate (UTS), MPa 570 to 640
430
Tensile Strength: Yield (Proof), MPa 320 to 530
310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 51
22
Thermal Expansion, µm/m-K 12
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
6.7
Embodied Water, L/kg 46
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 96
52
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 760
510
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20 to 23
18
Strength to Weight: Bending, points 19 to 21
19
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 18 to 20
55

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.1
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 98.6 to 99.03
0 to 0.3
Manganese (Mn), % 0.6 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.010
Sulfur (S), % 0 to 0.050
0
Zirconium (Zr), % 0
94.8 to 100