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ACI-ASTM CA15 Steel vs. S82012 Stainless Steel

Both ACI-ASTM CA15 steel and S82012 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15 steel and the bottom bar is S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
40
Fatigue Strength, MPa 370
480
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 700
800
Tensile Strength: Yield (Proof), MPa 570
560

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 750
950
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
11
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.4
Embodied Energy, MJ/kg 28
35
Embodied Water, L/kg 100
140

Common Calculations

PREN (Pitting Resistance) 14
24
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
290
Resilience: Unit (Modulus of Resilience), kJ/m3 820
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 6.7
3.9
Thermal Shock Resistance, points 26
23

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.050
Chromium (Cr), % 11.5 to 14
19 to 20.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 81.8 to 88.5
71.3 to 77.9
Manganese (Mn), % 0 to 1.0
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.5
0.1 to 0.6
Nickel (Ni), % 0 to 1.0
0.8 to 1.5
Nitrogen (N), % 0
0.16 to 0.26
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.8
Sulfur (S), % 0 to 0.040
0 to 0.0050