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SAE-AISI 5140 Steel vs. ACI-ASTM CA28MWV Steel

Both SAE-AISI 5140 steel and ACI-ASTM CA28MWV steel are iron alloys. They have 86% 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 SAE-AISI 5140 steel and the bottom bar is ACI-ASTM CA28MWV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 29
11
Fatigue Strength, MPa 220 to 570
470
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 560 to 970
1080
Tensile Strength: Yield (Proof), MPa 290 to 840
870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
740
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 19
44
Embodied Water, L/kg 49
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
38
Strength to Weight: Bending, points 19 to 28
30
Thermal Diffusivity, mm2/s 12
6.6
Thermal Shock Resistance, points 16 to 29
40

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.2 to 0.28
Chromium (Cr), % 0.7 to 0.9
11 to 12.5
Iron (Fe), % 97.3 to 98.1
81.4 to 85.8
Manganese (Mn), % 0.7 to 0.9
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 0
0.5 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3