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S41045 Stainless Steel vs. ACI-ASTM CE8MN Steel

Both S41045 stainless steel and ACI-ASTM CE8MN steel are iron alloys. They have 75% 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 S41045 stainless steel and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
29
Fatigue Strength, MPa 160
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 430
750
Tensile Strength: Yield (Proof), MPa 230
500

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 740
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 29
16
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.2
4.2
Embodied Energy, MJ/kg 31
58
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 13
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
620
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
27
Strength to Weight: Bending, points 16
23
Thermal Diffusivity, mm2/s 7.8
4.2
Thermal Shock Resistance, points 16
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 12 to 13
22.5 to 25.5
Iron (Fe), % 83.8 to 88
56 to 66.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.5
Nickel (Ni), % 0 to 0.5
8.0 to 11
Niobium (Nb), % 0 to 0.6
0
Nitrogen (N), % 0 to 0.030
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040