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S15500 Stainless Steel vs. ACI-ASTM CB7Cu-2 Steel

Both S15500 stainless steel and ACI-ASTM CB7Cu-2 steel are iron alloys. Their average alloy composition is basically identical. There are 30 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 S15500 stainless steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290 to 430
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.8 to 16
5.7 to 11
Fatigue Strength, MPa 350 to 650
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Tensile Strength: Ultimate (UTS), MPa 890 to 1490
960 to 1350
Tensile Strength: Yield (Proof), MPa 590 to 1310
760 to 1180

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 39
38
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 15
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 890 to 4460
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 53
34 to 48
Strength to Weight: Bending, points 26 to 37
28 to 35
Thermal Diffusivity, mm2/s 4.6
4.6
Thermal Shock Resistance, points 30 to 50
32 to 45

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.070
Chromium (Cr), % 14 to 15.5
14 to 15.5
Copper (Cu), % 2.5 to 4.5
2.5 to 3.2
Iron (Fe), % 71.9 to 79.9
73.6 to 79
Manganese (Mn), % 0 to 1.0
0 to 0.7
Nickel (Ni), % 3.5 to 5.5
4.5 to 5.5
Niobium (Nb), % 0.15 to 0.45
0 to 0.35
Nitrogen (N), % 0
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