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EN 1.4029 Stainless Steel vs. ACI-ASTM CN3M Steel

Both EN 1.4029 stainless steel and ACI-ASTM CN3M steel are iron alloys. They have 62% of their average alloy composition in common. There are 31 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 EN 1.4029 stainless steel and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10 to 20
34
Fatigue Strength, MPa 270 to 400
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 700 to 930
500
Tensile Strength: Yield (Proof), MPa 410 to 740
190

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
31
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.0
5.9
Embodied Energy, MJ/kg 28
80
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 14
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1410
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 33
17
Strength to Weight: Bending, points 23 to 27
17
Thermal Diffusivity, mm2/s 8.1
3.4
Thermal Shock Resistance, points 26 to 34
11

Alloy Composition

Carbon (C), % 0.25 to 0.32
0 to 0.030
Chromium (Cr), % 12 to 13.5
20 to 22
Iron (Fe), % 82.8 to 87.6
42.4 to 52.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.6
4.5 to 5.5
Nickel (Ni), % 0
23 to 27
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.25
0 to 0.030