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ACI-ASTM CB7Cu-1 Steel vs. EN 1.4941 Stainless Steel

Both ACI-ASTM CB7Cu-1 steel and EN 1.4941 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 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 ACI-ASTM CB7Cu-1 steel and the bottom bar is EN 1.4941 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
39
Fatigue Strength, MPa 420 to 590
180
Impact Strength: V-Notched Charpy, J 34
98
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
590
Tensile Strength: Yield (Proof), MPa 760 to 1180
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.3
Embodied Energy, MJ/kg 38
47
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 17
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
21
Strength to Weight: Bending, points 28 to 35
20
Thermal Diffusivity, mm2/s 4.6
4.3
Thermal Shock Resistance, points 32 to 45
13

Alloy Composition

Boron (B), % 0
0.0015 to 0.0050
Carbon (C), % 0 to 0.070
0.040 to 0.080
Chromium (Cr), % 15.5 to 17.7
17 to 19
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 72.3 to 78.4
65.1 to 73.6
Manganese (Mn), % 0 to 0.7
0 to 2.0
Nickel (Ni), % 3.6 to 4.6
9.0 to 12
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.4 to 0.8