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ACI-ASTM CF8 Steel vs. N08330 Stainless Steel

Both ACI-ASTM CF8 steel and N08330 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 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 CF8 steel and the bottom bar is N08330 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 55
34
Fatigue Strength, MPa 260
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
550
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 980
1050
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
32
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.1
5.4
Embodied Energy, MJ/kg 44
77
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 20
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
19
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 4.3
3.1
Thermal Shock Resistance, points 13
13

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 18 to 21
17 to 20
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 63.8 to 74
38.3 to 48.3
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 11
34 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.75 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.030
Tin (Sn), % 0
0 to 0.025