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ACI-ASTM CN7MS Steel vs. AISI 416 Stainless Steel

Both ACI-ASTM CN7MS steel and AISI 416 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 30 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 CN7MS steel and the bottom bar is AISI 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
13 to 31
Fatigue Strength, MPa 200
230 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
510 to 800
Tensile Strength: Yield (Proof), MPa 230
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 1040
680
Melting Completion (Liquidus), °C 1400
1530
Melting Onset (Solidus), °C 1350
1480
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
30
Thermal Expansion, µm/m-K 16
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 28
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.1
1.9
Embodied Energy, MJ/kg 71
27
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 28
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 140
220 to 940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
18 to 29
Strength to Weight: Bending, points 19
18 to 25
Thermal Diffusivity, mm2/s 3.2
8.1
Thermal Shock Resistance, points 13
19 to 30

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 18 to 20
12 to 14
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
83.2 to 87.9
Manganese (Mn), % 0 to 1.0
0 to 1.3
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35