MakeItFrom.com
Menu (ESC)

Austempered Cast Iron vs. S32750 Stainless Steel

Both austempered cast iron and S32750 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 26 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 austempered cast iron and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 490
270
Elastic (Young's, Tensile) Modulus, GPa 180
210
Elongation at Break, % 1.1 to 13
17
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 62 to 69
81
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
860
Tensile Strength: Yield (Proof), MPa 560 to 1460
590

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 42
15
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
21
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 1.8
4.1
Embodied Energy, MJ/kg 25
56
Embodied Water, L/kg 48
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 95
130
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 3970
860
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 66
31
Strength to Weight: Bending, points 27 to 44
26
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 25 to 53
25

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0 to 0.030
Chromium (Cr), % 0 to 0.1
24 to 26
Copper (Cu), % 0 to 0.8
0 to 0.5
Iron (Fe), % 89.6 to 94
58.1 to 66.8
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0 to 1.2
Molybdenum (Mo), % 0 to 0.3
3.0 to 5.0
Nickel (Ni), % 0 to 2.0
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020
Tin (Sn), % 0 to 0.020
0
Vanadium (V), % 0 to 0.1
0