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EN 1.4123 Stainless Steel vs. ACI-ASTM CN7MS Steel

Both EN 1.4123 stainless steel and ACI-ASTM CN7MS steel are iron alloys. They have 68% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4123 stainless steel and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 720 to 810
540

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 840
1040
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
28
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 4.2
5.1
Embodied Energy, MJ/kg 62
71
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 24
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
19
Strength to Weight: Bending, points 23 to 25
19
Thermal Diffusivity, mm2/s 6.3
3.2
Thermal Shock Resistance, points 26 to 29
13

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.070
Chromium (Cr), % 14 to 16.5
18 to 20
Copper (Cu), % 0
1.5 to 2.0
Iron (Fe), % 76.7 to 84.6
45.4 to 53.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.0 to 2.5
2.5 to 3.0
Nickel (Ni), % 0 to 0.5
22 to 25
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
2.5 to 3.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0 to 1.5
0