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EN 1.4931 Steel vs. ACI-ASTM CB7Cu-2 Steel

Both EN 1.4931 steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 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 1.4931 steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
5.7 to 11
Fatigue Strength, MPa 410
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 810
960 to 1350
Tensile Strength: Yield (Proof), MPa 620
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.6
Embodied Energy, MJ/kg 42
38
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 16
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 970
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
34 to 48
Strength to Weight: Bending, points 25
28 to 35
Thermal Diffusivity, mm2/s 6.5
4.6
Thermal Shock Resistance, points 22
32 to 45

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.070
Chromium (Cr), % 11.3 to 12.2
14 to 15.5
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 83.2 to 86.8
73.6 to 79
Manganese (Mn), % 0.5 to 0.8
0 to 0.7
Molybdenum (Mo), % 1.0 to 1.2
0
Nickel (Ni), % 0 to 1.0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0