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AISI 440A Stainless Steel vs. Grade 704C Zirconium

AISI 440A stainless steel belongs to the iron alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 19 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 AISI 440A stainless steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
97
Elongation at Break, % 5.0 to 20
11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
36
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
470
Tensile Strength: Yield (Proof), MPa 420 to 1650
310

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 23
21
Thermal Expansion, µm/m-K 10
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.7
6.7
Embodied Water, L/kg 120
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
48
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26 to 65
20
Strength to Weight: Bending, points 23 to 43
20
Thermal Diffusivity, mm2/s 6.2
12
Thermal Shock Resistance, points 26 to 65
58

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.1
Chromium (Cr), % 16 to 18
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 78.4 to 83.4
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
1.0 to 2.0
Zirconium (Zr), % 0
92.9 to 99