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AISI 321 Stainless Steel vs. ZA-12

AISI 321 stainless steel belongs to the iron alloys classification, while ZA-12 belongs to the zinc alloys. There are 31 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 321 stainless steel and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
89 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
83
Elongation at Break, % 34 to 50
1.6 to 5.3
Fatigue Strength, MPa 220 to 270
73 to 120
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
33
Shear Strength, MPa 420 to 460
240 to 300
Tensile Strength: Ultimate (UTS), MPa 590 to 690
260 to 400
Tensile Strength: Yield (Proof), MPa 220 to 350
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 290
120
Maximum Temperature: Mechanical, °C 870
100
Melting Completion (Liquidus), °C 1430
430
Melting Onset (Solidus), °C 1400
380
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 16
120
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
42

Otherwise Unclassified Properties

Base Metal Price, % relative 16
11
Density, g/cm3 7.8
6.0
Embodied Carbon, kg CO2/kg material 3.2
3.4
Embodied Energy, MJ/kg 45
64
Embodied Water, L/kg 140
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
4.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
260 to 620
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
12 to 19
Strength to Weight: Bending, points 20 to 22
15 to 20
Thermal Diffusivity, mm2/s 4.1
43
Thermal Shock Resistance, points 13 to 15
9.4 to 14

Alloy Composition

Aluminum (Al), % 0
10.5 to 11.5
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0.5 to 1.2
Iron (Fe), % 65.3 to 74
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 12
0 to 0.020
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.060
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0 to 0.7
0
Zinc (Zn), % 0
87.1 to 89