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ACI-ASTM CB7Cu-1 Steel vs. EN 1.4371 Stainless Steel

Both ACI-ASTM CB7Cu-1 steel and EN 1.4371 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
45 to 51
Fatigue Strength, MPa 420 to 590
290 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
740 to 750
Tensile Strength: Yield (Proof), MPa 760 to 1180
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1500
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
17

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 13
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 38
38
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 17
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
250 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
27
Strength to Weight: Bending, points 28 to 35
24
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 32 to 45
16

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 15.5 to 17.7
16 to 17.5
Copper (Cu), % 2.5 to 3.2
0 to 1.0
Iron (Fe), % 72.3 to 78.4
66.7 to 74.4
Manganese (Mn), % 0 to 0.7
6.0 to 8.0
Nickel (Ni), % 3.6 to 4.6
3.5 to 5.5
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0.15 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015