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ACI-ASTM CB6 Steel vs. S44625 Stainless Steel

Both ACI-ASTM CB6 steel and S44625 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 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 CB6 steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
22
Fatigue Strength, MPa 410
240
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 880
590
Tensile Strength: Yield (Proof), MPa 660
360

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 10
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 12
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.8
Embodied Energy, MJ/kg 36
39
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 17
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
310
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
21
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 4.6
4.6
Thermal Shock Resistance, points 31
19

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.010
Chromium (Cr), % 15.5 to 17.5
25 to 27.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 74.4 to 81
69.4 to 74.3
Manganese (Mn), % 0 to 1.0
0 to 0.4
Molybdenum (Mo), % 0 to 0.5
0.75 to 1.5
Nickel (Ni), % 3.5 to 5.5
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.020