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ACI-ASTM CB7Cu-2 Steel vs. AISI 301LN Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and AISI 301LN stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AISI 301LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
23 to 51
Fatigue Strength, MPa 420 to 590
270 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
630 to 1060
Tensile Strength: Yield (Proof), MPa 760 to 1180
270 to 770

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
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.7

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 15
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
220 to 290
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
180 to 1520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
22 to 38
Strength to Weight: Bending, points 28 to 35
21 to 30
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 32 to 45
14 to 24

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 14 to 15.5
16 to 18
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
70.7 to 77.9
Manganese (Mn), % 0 to 0.7
0 to 2.0
Nickel (Ni), % 4.5 to 5.5
6.0 to 8.0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0.070 to 0.2
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 0.030