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ACI-ASTM CA15 Steel vs. S20161 Stainless Steel

Both ACI-ASTM CA15 steel and S20161 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15 steel and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
46
Fatigue Strength, MPa 370
360
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34
45
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 700
980
Tensile Strength: Yield (Proof), MPa 570
390

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 750
870
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1500
1330
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
12
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
39
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
360
Resilience: Unit (Modulus of Resilience), kJ/m3 820
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 25
36
Strength to Weight: Bending, points 23
29
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 26
22

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.15
Chromium (Cr), % 11.5 to 14
15 to 18
Iron (Fe), % 81.8 to 88.5
65.6 to 73.9
Manganese (Mn), % 0 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
3.0 to 4.0
Sulfur (S), % 0 to 0.040
0 to 0.040