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S32750 Stainless Steel vs. ACI-ASTM CE8MN Steel

Both S32750 stainless steel and ACI-ASTM CE8MN steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S32750 stainless steel and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
29
Fatigue Strength, MPa 360
370
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 860
750
Tensile Strength: Yield (Proof), MPa 590
500

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 21
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
4.2
Embodied Energy, MJ/kg 56
58
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 43
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
190
Resilience: Unit (Modulus of Resilience), kJ/m3 860
620
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
27
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 25
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
22.5 to 25.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 58.1 to 66.8
56 to 66.4
Manganese (Mn), % 0 to 1.2
0 to 1.0
Molybdenum (Mo), % 3.0 to 5.0
3.0 to 4.5
Nickel (Ni), % 6.0 to 8.0
8.0 to 11
Nitrogen (N), % 0.24 to 0.32
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.040