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AISI 302 Stainless Steel vs. ACI-ASTM CN3MN Steel

Both AISI 302 stainless steel and ACI-ASTM CN3MN steel are iron alloys. They have 74% 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 302 stainless steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 440
180
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 4.5 to 46
39
Fatigue Strength, MPa 210 to 520
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 580 to 1430
620
Tensile Strength: Yield (Proof), MPa 230 to 1100
300

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1420
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 2.8
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.0
6.2
Embodied Energy, MJ/kg 42
84
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 19
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 260
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 3070
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 51
21
Strength to Weight: Bending, points 20 to 36
20
Thermal Diffusivity, mm2/s 4.4
3.4
Thermal Shock Resistance, points 12 to 31
14

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 17 to 19
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 67.9 to 75
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), % 8.0 to 10
23.5 to 25.5
Nitrogen (N), % 0 to 0.1
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