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ACI-ASTM CT15C Steel vs. EN 1.4901 Stainless Steel

Both ACI-ASTM CT15C steel and EN 1.4901 stainless 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 ACI-ASTM CT15C steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.050 to 0.15
0.070 to 0.13
Chromium (Cr), % 19 to 21
8.5 to 9.5
Iron (Fe), % 40.3 to 49.2
85.8 to 89.1
Manganese (Mn), % 0.15 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 31 to 34
0 to 0.4
Niobium (Nb), % 0.5 to 1.5
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.15 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010