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ACI-ASTM CT15C Steel vs. S31277 Stainless Steel

Both ACI-ASTM CT15C steel and S31277 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
45
Fatigue Strength, MPa 130
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 500
860
Tensile Strength: Yield (Proof), MPa 190
410

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 560
430
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
36
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 6.1
6.7
Embodied Energy, MJ/kg 88
90
Embodied Water, L/kg 190
220

Common Calculations

PREN (Pitting Resistance) 20
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
320
Resilience: Unit (Modulus of Resilience), kJ/m3 93
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 17
25
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.020
Chromium (Cr), % 19 to 21
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 40.3 to 49.2
35.5 to 46.2
Manganese (Mn), % 0.15 to 1.5
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 31 to 34
26 to 28
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010