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ACI-ASTM CF3MN Steel vs. S41041 Stainless Steel

Both ACI-ASTM CF3MN steel and S41041 stainless steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have 79% of their average alloy composition in common. There are 32 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 ACI-ASTM CF3MN steel and the bottom bar is S41041 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
17
Fatigue Strength, MPa 250
350
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 580
910
Tensile Strength: Yield (Proof), MPa 290
580

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 1010
740
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
29
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
2.2
Embodied Energy, MJ/kg 53
31
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 30
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140
Resilience: Unit (Modulus of Resilience), kJ/m3 210
860
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
32
Strength to Weight: Bending, points 20
27
Thermal Diffusivity, mm2/s 4.1
7.8
Thermal Shock Resistance, points 13
33

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0 to 0.030
0.13 to 0.18
Chromium (Cr), % 17 to 22
11.5 to 13
Iron (Fe), % 58.7 to 71.9
84.5 to 87.8
Manganese (Mn), % 0 to 1.5
0.4 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.2
Nickel (Ni), % 9.0 to 13
0 to 0.5
Niobium (Nb), % 0
0.15 to 0.45
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030