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ASTM A302 Alloy Steel vs. Grade 702C Zirconium

ASTM A302 alloy 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 (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
180
Elastic (Young's, Tensile) Modulus, GPa 190
97
Elongation at Break, % 20 to 23
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
36
Tensile Strength: Ultimate (UTS), MPa 590 to 620
430
Tensile Strength: Yield (Proof), MPa 350 to 390
310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 39 to 51
22
Thermal Expansion, µm/m-K 13
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.8 to 7.9
6.7
Embodied Water, L/kg 48 to 50
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
52
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
510
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 21 to 22
18
Strength to Weight: Bending, points 20 to 21
19
Thermal Diffusivity, mm2/s 10 to 14
12
Thermal Shock Resistance, points 17 to 18
55