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EN 1.4401 Stainless Steel vs. ACI-ASTM CT15C Steel

Both EN 1.4401 stainless steel and ACI-ASTM CT15C steel are iron alloys. They have 75% 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 EN 1.4401 stainless steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 40
23
Fatigue Strength, MPa 200 to 320
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 600 to 900
500
Tensile Strength: Yield (Proof), MPa 230 to 570
190

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
560
Maximum Temperature: Mechanical, °C 950
1080
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
36
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.8
6.1
Embodied Energy, MJ/kg 52
88
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 26
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
90
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
17
Strength to Weight: Bending, points 20 to 26
17
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 13 to 20
12

Alloy Composition

Carbon (C), % 0 to 0.070
0.050 to 0.15
Chromium (Cr), % 16.5 to 18.5
19 to 21
Iron (Fe), % 62.8 to 71.5
40.3 to 49.2
Manganese (Mn), % 0 to 2.0
0.15 to 1.5
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030