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ACI-ASTM CB7Cu-2 Steel vs. S20910 Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and S20910 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
14 to 39
Fatigue Strength, MPa 420 to 590
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
79
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
780 to 940
Tensile Strength: Yield (Proof), MPa 760 to 1180
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
13
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 15
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
28 to 33
Strength to Weight: Bending, points 28 to 35
24 to 27
Thermal Diffusivity, mm2/s 4.6
3.6
Thermal Shock Resistance, points 32 to 45
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 14 to 15.5
20.5 to 23.5
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
52.1 to 62.1
Manganese (Mn), % 0 to 0.7
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 4.5 to 5.5
11.5 to 13.5
Niobium (Nb), % 0 to 0.35
0.1 to 0.3
Nitrogen (N), % 0 to 0.050
0.2 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3