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EN 1.3956 Stainless Steel vs. ACI-ASTM CB7Cu-2 Steel

Both EN 1.3956 stainless steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 78% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
5.7 to 11
Fatigue Strength, MPa 240
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
75
Tensile Strength: Ultimate (UTS), MPa 650
960 to 1350
Tensile Strength: Yield (Proof), MPa 330
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
2.6
Embodied Energy, MJ/kg 68
38
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 34
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
34 to 48
Strength to Weight: Bending, points 21
28 to 35
Thermal Shock Resistance, points 18
32 to 45

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 20.5 to 23.5
14 to 15.5
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 51.9 to 62.1
73.6 to 79
Manganese (Mn), % 4.0 to 6.0
0 to 0.7
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
4.5 to 5.5
Niobium (Nb), % 0.1 to 0.3
0 to 0.35
Nitrogen (N), % 0.2 to 0.4
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0