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ACI-ASTM CN7MS Steel vs. S35125 Stainless Steel

Both ACI-ASTM CN7MS steel and S35125 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 29 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 S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
39
Fatigue Strength, MPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 540
540
Tensile Strength: Yield (Proof), MPa 230
230

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Corrosion, °C 420
490
Maximum Temperature: Mechanical, °C 1040
1100
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 28
36
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
6.4
Embodied Energy, MJ/kg 71
89
Embodied Water, L/kg 180
210

Common Calculations

PREN (Pitting Resistance) 28
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
19
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 to 0.1
Chromium (Cr), % 18 to 20
20 to 23
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
36.2 to 45.8
Manganese (Mn), % 0 to 1.0
1.0 to 1.5
Molybdenum (Mo), % 2.5 to 3.0
2.0 to 3.0
Nickel (Ni), % 22 to 25
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 2.5 to 3.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015