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AISI 420 Stainless Steel vs. Grade 702C Zirconium

AISI 420 stainless steel belongs to the iron alloys classification, while grade 702C zirconium belongs to the otherwise unclassified metals. There are 22 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 AISI 420 stainless steel and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 190
97
Elongation at Break, % 8.0 to 15
13
Poisson's Ratio 0.28
0.34
Rockwell B Hardness 84
84
Shear Modulus, GPa 76
36
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
430
Tensile Strength: Yield (Proof), MPa 380 to 1310
310

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 27
22
Thermal Expansion, µm/m-K 10
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
6.7
Embodied Water, L/kg 100
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
52
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
510
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25 to 62
18
Strength to Weight: Bending, points 22 to 41
19
Thermal Diffusivity, mm2/s 7.3
12
Thermal Shock Resistance, points 25 to 62
55

Alloy Composition

Carbon (C), % 0.15 to 0.4
0 to 0.1
Chromium (Cr), % 12 to 14
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 82.3 to 87.9
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.75
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
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zirconium (Zr), % 0
94.8 to 100