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S38815 Stainless Steel vs. ACI-ASTM CB7Cu-2 Steel

Both S38815 stainless steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 83% of their average alloy composition in common. There are 26 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 S38815 stainless steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 34
5.7 to 11
Fatigue Strength, MPa 230
420 to 590
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 610
960 to 1350
Tensile Strength: Yield (Proof), MPa 290
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1310
1380
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.6
Embodied Energy, MJ/kg 54
38
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 18
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
34 to 48
Strength to Weight: Bending, points 21
28 to 35
Thermal Shock Resistance, points 15
32 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 13 to 15
14 to 15.5
Copper (Cu), % 0.75 to 1.5
2.5 to 3.2
Iron (Fe), % 56.1 to 67
73.6 to 79
Manganese (Mn), % 0 to 2.0
0 to 0.7
Molybdenum (Mo), % 0.75 to 1.5
0
Nickel (Ni), % 13 to 17
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 5.5 to 6.5
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030