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AISI 431 Stainless Steel vs. ZA-27

AISI 431 stainless steel belongs to the iron alloys classification, while ZA-27 belongs to the zinc alloys. There are 31 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is ZA-27.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
100 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
78
Elongation at Break, % 15 to 17
2.0 to 4.5
Fatigue Strength, MPa 430 to 610
110 to 170
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
31
Shear Strength, MPa 550 to 840
230 to 330
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
400 to 430
Tensile Strength: Yield (Proof), MPa 710 to 1040
260 to 370

Thermal Properties

Latent Heat of Fusion, J/g 280
130
Maximum Temperature: Mechanical, °C 850
120
Melting Completion (Liquidus), °C 1510
480
Melting Onset (Solidus), °C 1450
380
Specific Heat Capacity, J/kg-K 480
530
Thermal Conductivity, W/m-K 26
130
Thermal Expansion, µm/m-K 12
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
30
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
53

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 7.7
5.0
Embodied Carbon, kg CO2/kg material 2.2
4.2
Embodied Energy, MJ/kg 31
80
Embodied Water, L/kg 120
570

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
8.1 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
420 to 890
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
28
Strength to Weight: Axial, points 32 to 50
22 to 24
Strength to Weight: Bending, points 27 to 36
24 to 25
Thermal Diffusivity, mm2/s 7.0
47
Thermal Shock Resistance, points 28 to 43
14 to 15

Alloy Composition

Aluminum (Al), % 0
25 to 28
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
2.0 to 2.5
Iron (Fe), % 78.2 to 83.8
0 to 0.1
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.010 to 0.020
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 1.3 to 2.5
0 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
69.3 to 73