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ACI-ASTM CB6 Steel vs. EN 1.4421 Stainless Steel

Both ACI-ASTM CB6 steel and EN 1.4421 stainless steel are iron alloys. Their average alloy composition is basically identical. 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 EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
11 to 17
Fatigue Strength, MPa 410
380 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 880
880 to 1100
Tensile Strength: Yield (Proof), MPa 660
620 to 950

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 870
870
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
16
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.6
Embodied Energy, MJ/kg 36
36
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 17
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
960 to 2270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
31 to 39
Strength to Weight: Bending, points 26
26 to 30
Thermal Diffusivity, mm2/s 4.6
4.4
Thermal Shock Resistance, points 31
31 to 39

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 15.5 to 17.5
15.5 to 17.5
Iron (Fe), % 74.4 to 81
74.4 to 80.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.7
Nickel (Ni), % 3.5 to 5.5
4.0 to 5.5
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020