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ACI-ASTM CN7MS Steel vs. N08332 Stainless Steel

Both ACI-ASTM CN7MS steel and N08332 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is N08332 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
34
Fatigue Strength, MPa 200
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
520
Tensile Strength: Yield (Proof), MPa 230
210

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1040
1050
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1350
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 28
32
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 5.1
5.4
Embodied Energy, MJ/kg 71
77
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 28
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 140
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 13
12

Alloy Composition

Carbon (C), % 0 to 0.070
0.050 to 0.1
Chromium (Cr), % 18 to 20
17 to 20
Copper (Cu), % 1.5 to 2.0
0 to 1.0
Iron (Fe), % 45.4 to 53.5
38.3 to 48.2
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
34 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 2.5 to 3.5
0.75 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tin (Sn), % 0
0 to 0.025