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ACI-ASTM CA15 Steel vs. SAE-AISI 4150 Steel

Both ACI-ASTM CA15 steel and SAE-AISI 4150 steel are iron alloys. They have 87% 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 CA15 steel and the bottom bar is SAE-AISI 4150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
200 to 380
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
12 to 20
Fatigue Strength, MPa 370
260 to 780
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 700
660 to 1310
Tensile Strength: Yield (Proof), MPa 570
380 to 1220

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
420
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
42
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
2.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 100
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
82 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 820
380 to 3930
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
24 to 47
Strength to Weight: Bending, points 23
22 to 34
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 26
19 to 39

Alloy Composition

Carbon (C), % 0 to 0.15
0.48 to 0.53
Chromium (Cr), % 11.5 to 14
0.8 to 1.1
Iron (Fe), % 81.8 to 88.5
96.7 to 97.7
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.15 to 0.25
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040