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ACI-ASTM CA6N Steel vs. SAE-AISI 1144 Steel

Both ACI-ASTM CA6N steel and SAE-AISI 1144 steel are iron alloys. They have 81% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6N steel and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
11 to 17
Fatigue Strength, MPa 640
280 to 430
Poisson's Ratio 0.28
0.29
Reduction in Area, % 57
34 to 40
Shear Modulus, GPa 75
72
Tensile Strength: Ultimate (UTS), MPa 1080
750 to 840
Tensile Strength: Yield (Proof), MPa 1060
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 740
400
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
51
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.4
Embodied Energy, MJ/kg 35
19
Embodied Water, L/kg 110
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
480 to 1290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
27 to 30
Strength to Weight: Bending, points 30
23 to 25
Thermal Diffusivity, mm2/s 6.1
14
Thermal Shock Resistance, points 40
22 to 24

Alloy Composition

Carbon (C), % 0 to 0.060
0.4 to 0.48
Chromium (Cr), % 10.5 to 12.5
0
Iron (Fe), % 77.9 to 83.5
97.5 to 98
Manganese (Mn), % 0 to 0.5
1.4 to 1.7
Nickel (Ni), % 6.0 to 8.0
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.020
0.24 to 0.33