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ACI-ASTM CN7M Steel vs. AISI 414 Stainless Steel

Both ACI-ASTM CN7M steel and AISI 414 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 31 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 CN7M steel and the bottom bar is AISI 414 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
430 to 480
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 480
900 to 960
Tensile Strength: Yield (Proof), MPa 200
700 to 790

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 430
390
Maximum Temperature: Mechanical, °C 1100
750
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
25
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 32
8.0
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.1
Embodied Energy, MJ/kg 78
29
Embodied Water, L/kg 210
100

Common Calculations

PREN (Pitting Resistance) 29
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1260 to 1590
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
32 to 34
Strength to Weight: Bending, points 17
27 to 28
Thermal Diffusivity, mm2/s 5.6
6.7
Thermal Shock Resistance, points 12
33 to 35

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 19 to 22
11.5 to 13.5
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
81.8 to 87.3
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
1.3 to 2.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030