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EN 1.4911 Stainless Steel vs. ACI-ASTM CF8 Steel

Both EN 1.4911 stainless steel and ACI-ASTM CF8 steel are iron alloys. They have 82% 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 EN 1.4911 stainless steel and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
55
Fatigue Strength, MPa 530
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 1070
540
Tensile Strength: Yield (Proof), MPa 970
260

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 700
980
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 20
16
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
3.1
Embodied Energy, MJ/kg 49
44
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 14
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
19
Strength to Weight: Bending, points 30
19
Thermal Diffusivity, mm2/s 5.4
4.3
Thermal Shock Resistance, points 37
13

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.080
Chromium (Cr), % 9.8 to 11.2
18 to 21
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
63.8 to 74
Manganese (Mn), % 0.3 to 1.3
0 to 1.5
Molybdenum (Mo), % 0.5 to 1.0
0 to 0.5
Nickel (Ni), % 0.2 to 1.2
8.0 to 11
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0