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Grade 705C Zirconium vs. S45000 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while S45000 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is S45000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
280 to 410
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
6.8 to 14
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
76
Tensile Strength: Ultimate (UTS), MPa 540
980 to 1410
Tensile Strength: Yield (Proof), MPa 390
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 5.7
11

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
94 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 790
850 to 4400
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
35 to 50
Strength to Weight: Bending, points 22
28 to 36
Thermal Diffusivity, mm2/s 9.9
4.5
Thermal Shock Resistance, points 69
33 to 47

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.050
Chromium (Cr), % 0
14 to 16
Copper (Cu), % 0
1.3 to 1.8
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
72.1 to 79.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 0
5.0 to 7.0
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 91.9 to 98
0