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ACI-ASTM CB6 Steel vs. S42300 Stainless Steel

Both ACI-ASTM CB6 steel and S42300 stainless steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have a moderately high 91% 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 CB6 steel and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
9.1
Fatigue Strength, MPa 410
440
Poisson's Ratio 0.28
0.28
Reduction in Area, % 40
22
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 880
1100
Tensile Strength: Yield (Proof), MPa 660
850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 870
750
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.2
Embodied Energy, MJ/kg 36
44
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 17
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
93
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
1840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
39
Strength to Weight: Bending, points 26
30
Thermal Diffusivity, mm2/s 4.6
6.8
Thermal Shock Resistance, points 31
40

Alloy Composition

Carbon (C), % 0 to 0.060
0.27 to 0.32
Chromium (Cr), % 15.5 to 17.5
11 to 12
Iron (Fe), % 74.4 to 81
82 to 85.1
Manganese (Mn), % 0 to 1.0
1.0 to 1.4
Molybdenum (Mo), % 0 to 0.5
2.5 to 3.0
Nickel (Ni), % 3.5 to 5.5
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0.2 to 0.3