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ACI-ASTM CN7MS Steel vs. EN 1.4374 Stainless Steel

Both ACI-ASTM CN7MS steel and EN 1.4374 stainless steel are iron alloys. They have 74% 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 EN 1.4374 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
40
Fatigue Strength, MPa 200
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540
800
Tensile Strength: Yield (Proof), MPa 230
400

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1040
920
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1350
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 28
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.1
2.9
Embodied Energy, MJ/kg 71
42
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 28
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
270
Resilience: Unit (Modulus of Resilience), kJ/m3 140
400
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 13
17

Alloy Composition

Carbon (C), % 0 to 0.070
0.050 to 0.1
Chromium (Cr), % 18 to 20
17.5 to 18.5
Copper (Cu), % 1.5 to 2.0
0 to 0.4
Iron (Fe), % 45.4 to 53.5
63.5 to 67.9
Manganese (Mn), % 0 to 1.0
9.0 to 10
Molybdenum (Mo), % 2.5 to 3.0
0 to 0.5
Nickel (Ni), % 22 to 25
5.0 to 6.0
Nitrogen (N), % 0
0.25 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 2.5 to 3.5
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030