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AISI 440B Stainless Steel vs. ZA-12

AISI 440B stainless steel belongs to the iron alloys classification, while ZA-12 belongs to the zinc alloys. There are 29 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
83
Elongation at Break, % 3.0 to 18
1.6 to 5.3
Fatigue Strength, MPa 260 to 850
73 to 120
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
33
Shear Strength, MPa 460 to 1110
240 to 300
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
260 to 400
Tensile Strength: Yield (Proof), MPa 430 to 1860
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 280
120
Maximum Temperature: Mechanical, °C 870
100
Melting Completion (Liquidus), °C 1480
430
Melting Onset (Solidus), °C 1370
380
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 23
120
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
42

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 7.7
6.0
Embodied Carbon, kg CO2/kg material 2.2
3.4
Embodied Energy, MJ/kg 31
64
Embodied Water, L/kg 120
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
4.0 to 20
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 70
12 to 19
Strength to Weight: Bending, points 24 to 45
15 to 20
Thermal Diffusivity, mm2/s 6.1
43
Thermal Shock Resistance, points 27 to 70
9.4 to 14

Alloy Composition

Aluminum (Al), % 0
10.5 to 11.5
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0.75 to 1.0
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0.5 to 1.2
Iron (Fe), % 78.2 to 83.3
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.060
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
87.1 to 89