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ACI-ASTM CN3M Steel vs. S33550 Stainless Steel

Both ACI-ASTM CN3M steel and S33550 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN3M steel and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
40
Fatigue Strength, MPa 150
270
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 500
680
Tensile Strength: Yield (Proof), MPa 190
310

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
470
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
24
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.9
4.3
Embodied Energy, MJ/kg 80
61
Embodied Water, L/kg 200
190

Common Calculations

PREN (Pitting Resistance) 38
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 89
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 3.4
3.9
Thermal Shock Resistance, points 11
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 20 to 22
25 to 28
Iron (Fe), % 42.4 to 52.5
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030