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EN 1.4901 Stainless Steel vs. ACI-ASTM CN3MN Steel

Both EN 1.4901 stainless steel and ACI-ASTM CN3MN steel are iron alloys. They have 56% 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 EN 1.4901 stainless steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19
39
Fatigue Strength, MPa 310
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 740
620
Tensile Strength: Yield (Proof), MPa 490
300

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Corrosion, °C 380
430
Maximum Temperature: Mechanical, °C 650
1100
Melting Completion (Liquidus), °C 1490
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 26
13
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.8
6.2
Embodied Energy, MJ/kg 40
84
Embodied Water, L/kg 89
200

Common Calculations

PREN (Pitting Resistance) 14
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
200
Resilience: Unit (Modulus of Resilience), kJ/m3 620
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 6.9
3.4
Thermal Shock Resistance, points 23
14

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 8.5 to 9.5
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 85.8 to 89.1
41.4 to 50.3
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
6.0 to 7.0
Nickel (Ni), % 0 to 0.4
23.5 to 25.5
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0.18 to 0.26
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0