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ACI-ASTM CN7MS Steel vs. EN 1.4520 Stainless Steel

Both ACI-ASTM CN7MS steel and EN 1.4520 stainless steel are iron alloys. They have 67% 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 CN7MS steel and the bottom bar is EN 1.4520 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
26
Fatigue Strength, MPa 200
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540
480
Tensile Strength: Yield (Proof), MPa 230
220

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 1040
870
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
20
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 28
8.5
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.1
2.2
Embodied Energy, MJ/kg 71
32
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 28
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 3.2
5.4
Thermal Shock Resistance, points 13
17

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.025
Chromium (Cr), % 18 to 20
16 to 18
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
80.1 to 83.9
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8