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AISI 347 Stainless Steel vs. ACI-ASTM CN3MN Steel

Both AISI 347 stainless steel and ACI-ASTM CN3MN steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 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 AISI 347 stainless steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
180
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34 to 46
39
Fatigue Strength, MPa 220 to 270
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 610 to 690
620
Tensile Strength: Yield (Proof), MPa 240 to 350
300

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 480
430
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 16
13
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 19
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.6
6.2
Embodied Energy, MJ/kg 52
84
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 18
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 220
200
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 310
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 25
21
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 4.3
3.4
Thermal Shock Resistance, points 13 to 15
14

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17 to 19
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 64.1 to 74
41.4 to 50.3
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 9.0 to 13
23.5 to 25.5
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010