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Grade 704C Zirconium vs. ASTM A387 Grade 12 Steel

Grade 704C zirconium belongs to the otherwise unclassified metals classification, while ASTM A387 grade 12 steel belongs to the iron alloys. 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 grade 704C zirconium and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 97
190
Elongation at Break, % 11
25
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 470
470 to 520
Tensile Strength: Yield (Proof), MPa 310
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 21
44
Thermal Expansion, µm/m-K 5.9
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 460
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 490
180 to 250
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 20
16 to 18
Strength to Weight: Bending, points 20
17 to 18
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 58
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.1
0.050 to 0.17
Chromium (Cr), % 0
0.8 to 1.2
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
97 to 98.2
Manganese (Mn), % 0
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 1.0 to 2.0
0
Zirconium (Zr), % 92.9 to 99
0