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ACI-ASTM CN7MS Steel vs. S45503 Stainless Steel

Both ACI-ASTM CN7MS steel and S45503 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 27 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 ACI-ASTM CN7MS steel and the bottom bar is S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
410 to 500
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
4.6 to 6.8
Fatigue Strength, MPa 200
710 to 800
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 540
1610 to 1850
Tensile Strength: Yield (Proof), MPa 230
1430 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Corrosion, °C 420
640
Maximum Temperature: Mechanical, °C 1040
760
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 28
15
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.1
3.4
Embodied Energy, MJ/kg 71
48
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 28
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
82 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
57 to 65
Strength to Weight: Bending, points 19
39 to 43
Thermal Shock Resistance, points 13
56 to 64

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.010
Chromium (Cr), % 18 to 20
11 to 12.5
Copper (Cu), % 1.5 to 2.0
1.5 to 2.5
Iron (Fe), % 45.4 to 53.5
72.4 to 78.9
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.0
0 to 0.5
Nickel (Ni), % 22 to 25
7.5 to 9.5
Niobium (Nb), % 0
0.1 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 2.5 to 3.5
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4