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EN 1.4945 Stainless Steel vs. ACI-ASTM CT15C Steel

Both EN 1.4945 stainless steel and ACI-ASTM CT15C steel are iron alloys. They have 80% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4945 stainless steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19 to 34
23
Fatigue Strength, MPa 230 to 350
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 640 to 740
500
Tensile Strength: Yield (Proof), MPa 290 to 550
190

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 520
560
Maximum Temperature: Mechanical, °C 920
1080
Melting Completion (Liquidus), °C 1490
1410
Melting Onset (Solidus), °C 1440
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 30
36
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 5.0
6.1
Embodied Energy, MJ/kg 73
88
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 23
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
90
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 25
17
Strength to Weight: Bending, points 20 to 22
17
Thermal Diffusivity, mm2/s 3.7
3.2
Thermal Shock Resistance, points 14 to 16
12

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.050 to 0.15
Chromium (Cr), % 15.5 to 17.5
19 to 21
Iron (Fe), % 57.9 to 65.7
40.3 to 49.2
Manganese (Mn), % 0 to 1.5
0.15 to 1.5
Nickel (Ni), % 15.5 to 17.5
31 to 34
Niobium (Nb), % 0.4 to 1.2
0.5 to 1.5
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.3 to 0.6
0.15 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.5 to 3.5
0