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AISI 304L Stainless Steel vs. ACI-ASTM CF8 Steel

Both AISI 304L stainless steel and ACI-ASTM CF8 steel are iron alloys. They have a very high 99% 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 AISI 304L stainless steel and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 350
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.7 to 46
55
Fatigue Strength, MPa 170 to 430
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540 to 1160
540
Tensile Strength: Yield (Proof), MPa 190 to 870
260

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 540
980
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 20
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 240
240
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 1900
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19 to 41
19
Strength to Weight: Bending, points 19 to 31
19
Thermal Diffusivity, mm2/s 4.2
4.3
Thermal Shock Resistance, points 12 to 25
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
18 to 21
Iron (Fe), % 65 to 74
63.8 to 74
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 8.0 to 12
8.0 to 11
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040