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AISI 416 Stainless Steel vs. Austempered Cast Iron

Both AISI 416 stainless steel and austempered cast iron are iron alloys. They have 87% of their average alloy composition in common. There are 26 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 416 stainless steel and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 320
270 to 490
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 13 to 31
1.1 to 13
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
62 to 69
Tensile Strength: Ultimate (UTS), MPa 510 to 800
860 to 1800
Tensile Strength: Yield (Proof), MPa 290 to 600
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1530
1380
Melting Onset (Solidus), °C 1480
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 30
42
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.9
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 1.9
1.8
Embodied Energy, MJ/kg 27
25
Embodied Water, L/kg 100
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 140
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 940
880 to 3970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 29
32 to 66
Strength to Weight: Bending, points 18 to 25
27 to 44
Thermal Diffusivity, mm2/s 8.1
11
Thermal Shock Resistance, points 19 to 30
25 to 53

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0 to 0.15
3.4 to 3.8
Chromium (Cr), % 12 to 14
0 to 0.1
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 83.2 to 87.9
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0 to 1.3
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
2.3 to 2.7
Sulfur (S), % 0.15 to 0.35
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.1