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ACI-ASTM CA15 Steel vs. S35115 Stainless Steel

Both ACI-ASTM CA15 steel and S35115 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 32 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 CA15 steel and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
46
Fatigue Strength, MPa 370
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 700
670
Tensile Strength: Yield (Proof), MPa 570
310

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1500
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.8
Embodied Energy, MJ/kg 28
67
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 14
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
250
Resilience: Unit (Modulus of Resilience), kJ/m3 820
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 6.7
3.9
Thermal Shock Resistance, points 26
15

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 11.5 to 14
23 to 25
Iron (Fe), % 81.8 to 88.5
47.6 to 55.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
1.5 to 2.5
Nickel (Ni), % 0 to 1.0
19 to 22
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0.5 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.015