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AISI 309 Stainless Steel vs. ZA-8

AISI 309 stainless steel belongs to the iron alloys classification, while ZA-8 belongs to the zinc alloys. There are 32 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 309 stainless steel and the bottom bar is ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
87 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
85 to 86
Elongation at Break, % 34 to 47
1.3 to 8.0
Fatigue Strength, MPa 250 to 280
51 to 100
Poisson's Ratio 0.27
0.26
Rockwell B Hardness 84
54 to 65
Shear Modulus, GPa 78
34
Shear Strength, MPa 420 to 470
240 to 280
Tensile Strength: Ultimate (UTS), MPa 600 to 710
210 to 370
Tensile Strength: Yield (Proof), MPa 260 to 350
210 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
110
Maximum Temperature: Mechanical, °C 980
100
Melting Completion (Liquidus), °C 1450
400
Melting Onset (Solidus), °C 1400
380
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 16
120
Thermal Expansion, µm/m-K 15
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
40

Otherwise Unclassified Properties

Base Metal Price, % relative 19
11
Density, g/cm3 7.8
6.3
Embodied Carbon, kg CO2/kg material 3.6
3.3
Embodied Energy, MJ/kg 51
62
Embodied Water, L/kg 170
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
2.8 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
260 to 490
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 21 to 25
9.3 to 17
Strength to Weight: Bending, points 20 to 23
12 to 18
Thermal Diffusivity, mm2/s 4.3
42
Thermal Shock Resistance, points 14 to 16
7.6 to 13

Alloy Composition

Aluminum (Al), % 0
8.0 to 8.8
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0
0.8 to 1.3
Iron (Fe), % 58 to 66
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), % 12 to 15
0 to 0.020
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.045
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
89.7 to 91.2

Comparable Variants