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N08925 Stainless Steel vs. ACI-ASTM CA40 Steel

Both N08925 stainless steel and ACI-ASTM CA40 steel are iron alloys. They have 61% of their average alloy composition in common. There are 31 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 N08925 stainless steel and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
10
Fatigue Strength, MPa 310
460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 680
910
Tensile Strength: Yield (Proof), MPa 340
860

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 1100
750
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1500
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 33
7.5
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.2
2.0
Embodied Energy, MJ/kg 84
28
Embodied Water, L/kg 200
100

Common Calculations

PREN (Pitting Resistance) 44
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
89
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
33
Strength to Weight: Bending, points 21
27
Thermal Diffusivity, mm2/s 3.5
6.7
Thermal Shock Resistance, points 15
33

Alloy Composition

Carbon (C), % 0 to 0.020
0.2 to 0.4
Chromium (Cr), % 19 to 21
11.5 to 14
Copper (Cu), % 0.8 to 1.5
0
Iron (Fe), % 42.7 to 50.1
81.5 to 88.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0 to 0.5
Nickel (Ni), % 24 to 26
0 to 1.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040