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EN 1.4911 Stainless Steel vs. ACI-ASTM CB7Cu-1 Steel

Both EN 1.4911 stainless steel and ACI-ASTM CB7Cu-1 steel are iron alloys. They have 88% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
5.7 to 11
Fatigue Strength, MPa 530
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 1070
960 to 1350
Tensile Strength: Yield (Proof), MPa 970
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1500
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 20
17
Thermal Expansion, µm/m-K 11
11

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
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.6
Embodied Energy, MJ/kg 49
38
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 14
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
1500 to 3590
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
34 to 48
Strength to Weight: Bending, points 30
28 to 35
Thermal Diffusivity, mm2/s 5.4
4.6
Thermal Shock Resistance, points 37
32 to 45

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.070
Chromium (Cr), % 9.8 to 11.2
15.5 to 17.7
Cobalt (Co), % 5.0 to 7.0
0
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 75.7 to 83.8
72.3 to 78.4
Manganese (Mn), % 0.3 to 1.3
0 to 0.7
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
3.6 to 4.6
Niobium (Nb), % 0.2 to 0.5
0 to 0.35
Nitrogen (N), % 0 to 0.035
0 to 0.050
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.1 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0