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ACI-ASTM CD3MN Steel vs. AISI 316N Stainless Steel

Both ACI-ASTM CD3MN steel and AISI 316N stainless steel are iron alloys. They have a moderately high 93% 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 CD3MN steel and the bottom bar is AISI 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
9.0 to 39
Fatigue Strength, MPa 340
230 to 450
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 710
620 to 1160
Tensile Strength: Yield (Proof), MPa 460
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 1060
940
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 18
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
3.9
Embodied Energy, MJ/kg 50
53
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 35
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 530
180 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
22 to 41
Strength to Weight: Bending, points 23
20 to 31
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 20
14 to 26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 21 to 23.5
16 to 18
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 62.6 to 71.9
61.9 to 71.9
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
2.0 to 3.0
Nickel (Ni), % 4.5 to 6.5
10 to 14
Nitrogen (N), % 0.1 to 0.3
0.1 to 0.16
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030