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ACI-ASTM CN7MS Steel vs. S33228 Stainless Steel

Both ACI-ASTM CN7MS steel and S33228 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is S33228 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
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
79
Tensile Strength: Ultimate (UTS), MPa 540
570
Tensile Strength: Yield (Proof), MPa 230
210

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Corrosion, °C 420
560
Maximum Temperature: Mechanical, °C 1040
1100
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1350
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 28
37
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 5.1
6.2
Embodied Energy, MJ/kg 71
89
Embodied Water, L/kg 180
220

Common Calculations

PREN (Pitting Resistance) 28
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
150
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
20
Strength to Weight: Bending, points 19
19
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.025
Carbon (C), % 0 to 0.070
0.040 to 0.080
Cerium (Ce), % 0
0.050 to 0.1
Chromium (Cr), % 18 to 20
26 to 28
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
36.5 to 42.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
31 to 33
Niobium (Nb), % 0
0.6 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 2.5 to 3.5
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.015