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ACI-ASTM CF8 Steel vs. EN 1.4104 Stainless Steel

Both ACI-ASTM CF8 steel and EN 1.4104 stainless steel are iron alloys. They have 87% 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 ACI-ASTM CF8 steel and the bottom bar is EN 1.4104 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 55
11 to 23
Fatigue Strength, MPa 260
230 to 310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540
630 to 750
Tensile Strength: Yield (Proof), MPa 260
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 980
860
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
8.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.2
Embodied Energy, MJ/kg 44
30
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 20
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
77 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
310 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
23 to 27
Strength to Weight: Bending, points 19
21 to 24
Thermal Diffusivity, mm2/s 4.3
6.7
Thermal Shock Resistance, points 13
22 to 27

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.17
Chromium (Cr), % 18 to 21
15.5 to 17.5
Iron (Fe), % 63.8 to 74
78.8 to 84.1
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0.2 to 0.6
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0.15 to 0.35