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AISI 403 Stainless Steel vs. ACI-ASTM CN3MN Steel

Both AISI 403 stainless steel and ACI-ASTM CN3MN steel are iron alloys. They have 59% of their average alloy composition in common. There are 32 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 AISI 403 stainless steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 240
180
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 16 to 25
39
Fatigue Strength, MPa 200 to 340
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 530 to 780
620
Tensile Strength: Yield (Proof), MPa 280 to 570
300

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 740
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 28
13
Thermal Expansion, µm/m-K 9.9
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.9
6.2
Embodied Energy, MJ/kg 27
84
Embodied Water, L/kg 99
200

Common Calculations

PREN (Pitting Resistance) 12
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
200
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 840
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19 to 28
21
Strength to Weight: Bending, points 19 to 24
20
Thermal Diffusivity, mm2/s 7.6
3.4
Thermal Shock Resistance, points 20 to 29
14

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 11.5 to 13
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 84.7 to 88.5
41.4 to 50.3
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.6
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010