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EN 1.4901 Stainless Steel vs. ACI-ASTM CT15C Steel

Both EN 1.4901 stainless steel and ACI-ASTM CT15C steel are iron alloys. Both are furnished in the normalized and tempered condition. They have 55% 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 CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
23
Fatigue Strength, MPa 310
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 740
500
Tensile Strength: Yield (Proof), MPa 490
190

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Corrosion, °C 380
560
Maximum Temperature: Mechanical, °C 650
1080
Melting Completion (Liquidus), °C 1490
1410
Melting Onset (Solidus), °C 1450
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
36
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.8
6.1
Embodied Energy, MJ/kg 40
88
Embodied Water, L/kg 89
190

Common Calculations

PREN (Pitting Resistance) 14
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
90
Resilience: Unit (Modulus of Resilience), kJ/m3 620
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 23
12

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0.050 to 0.15
Chromium (Cr), % 8.5 to 9.5
19 to 21
Iron (Fe), % 85.8 to 89.1
40.3 to 49.2
Manganese (Mn), % 0.3 to 0.6
0.15 to 1.5
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 0 to 0.4
31 to 34
Niobium (Nb), % 0.040 to 0.090
0.5 to 1.5
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0.15 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.030
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