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ACI-ASTM CK35MN Steel vs. S42300 Stainless Steel

Both ACI-ASTM CK35MN steel and S42300 stainless steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have 63% 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 ACI-ASTM CK35MN steel and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
330
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
9.1
Fatigue Strength, MPa 270
440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 650
1100
Tensile Strength: Yield (Proof), MPa 310
850

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 440
380
Maximum Temperature: Mechanical, °C 1100
750
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.9
3.2
Embodied Energy, MJ/kg 81
44
Embodied Water, L/kg 210
110

Common Calculations

PREN (Pitting Resistance) 48
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
93
Resilience: Unit (Modulus of Resilience), kJ/m3 240
1840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
39
Strength to Weight: Bending, points 21
30
Thermal Diffusivity, mm2/s 3.3
6.8
Thermal Shock Resistance, points 14
40

Alloy Composition

Carbon (C), % 0 to 0.035
0.27 to 0.32
Chromium (Cr), % 22 to 24
11 to 12
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 43.4 to 51.8
82 to 85.1
Manganese (Mn), % 0 to 2.0
1.0 to 1.4
Molybdenum (Mo), % 6.0 to 6.8
2.5 to 3.0
Nickel (Ni), % 20 to 22
0 to 0.5
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025
Vanadium (V), % 0
0.2 to 0.3