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ACI-ASTM CN7M Steel vs. EN 1.4317 Stainless Steel

Both ACI-ASTM CN7M steel and EN 1.4317 stainless steel are iron alloys. They have 61% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7M steel and the bottom bar is EN 1.4317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
17
Fatigue Strength, MPa 190
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 480
860
Tensile Strength: Yield (Proof), MPa 200
630

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 430
390
Maximum Temperature: Mechanical, °C 1100
770
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 21
26
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 32
10
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.4
Embodied Energy, MJ/kg 78
33
Embodied Water, L/kg 210
110

Common Calculations

PREN (Pitting Resistance) 29
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
31
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 5.6
7.0
Thermal Shock Resistance, points 12
30

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 19 to 22
12 to 13.5
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
78.7 to 84.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.7
Nickel (Ni), % 27.5 to 30.5
3.5 to 5.0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.025