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ACI-ASTM CK35MN Steel vs. S32304 Stainless Steel

Both ACI-ASTM CK35MN steel and S32304 stainless steel are iron alloys. They have 77% 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 ACI-ASTM CK35MN steel and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 270
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 650
670
Tensile Strength: Yield (Proof), MPa 310
460

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 440
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
14
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.9
2.8
Embodied Energy, MJ/kg 81
40
Embodied Water, L/kg 210
160

Common Calculations

PREN (Pitting Resistance) 48
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
170
Resilience: Unit (Modulus of Resilience), kJ/m3 240
520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 3.3
4.0
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.030
Chromium (Cr), % 22 to 24
21.5 to 24.5
Copper (Cu), % 0 to 0.4
0.050 to 0.6
Iron (Fe), % 43.4 to 51.8
65 to 75.4
Manganese (Mn), % 0 to 2.0
0 to 2.5
Molybdenum (Mo), % 6.0 to 6.8
0.050 to 0.6
Nickel (Ni), % 20 to 22
3.0 to 5.5
Nitrogen (N), % 0.21 to 0.32
0.050 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030