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ACI-ASTM CN7MS Steel vs. EN 1.4435 Stainless Steel

Both ACI-ASTM CN7MS steel and EN 1.4435 stainless steel are iron alloys. They have 85% 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 1.4435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
43
Fatigue Strength, MPa 200
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 540
610
Tensile Strength: Yield (Proof), MPa 230
240

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1040
980
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 28
21
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.1
4.1
Embodied Energy, MJ/kg 71
57
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 28
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 13
14

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
17 to 19
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
59.8 to 68
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.0
2.5 to 3.0
Nickel (Ni), % 22 to 25
12.5 to 15
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015