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S38815 Stainless Steel vs. ACI-ASTM CT15C Steel

Both S38815 stainless steel and ACI-ASTM CT15C steel are iron alloys. They have 75% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S38815 stainless steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 230
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Tensile Strength: Ultimate (UTS), MPa 610
500
Tensile Strength: Yield (Proof), MPa 290
190

Thermal Properties

Latent Heat of Fusion, J/g 370
310
Maximum Temperature: Corrosion, °C 400
560
Maximum Temperature: Mechanical, °C 860
1080
Melting Completion (Liquidus), °C 1360
1410
Melting Onset (Solidus), °C 1310
1360
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 19
36
Density, g/cm3 7.5
8.0
Embodied Carbon, kg CO2/kg material 3.8
6.1
Embodied Energy, MJ/kg 54
88
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 18
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
90
Resilience: Unit (Modulus of Resilience), kJ/m3 220
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
17
Strength to Weight: Bending, points 21
17
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 13 to 15
19 to 21
Copper (Cu), % 0.75 to 1.5
0
Iron (Fe), % 56.1 to 67
40.3 to 49.2
Manganese (Mn), % 0 to 2.0
0.15 to 1.5
Molybdenum (Mo), % 0.75 to 1.5
0
Nickel (Ni), % 13 to 17
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 5.5 to 6.5
0.15 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.030