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SAE-AISI 1038 Steel vs. ACI-ASTM CB6 Steel

Both SAE-AISI 1038 steel and ACI-ASTM CB6 steel are iron alloys. They have 78% 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 1038 steel and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 20
18
Fatigue Strength, MPa 220 to 350
410
Poisson's Ratio 0.29
0.28
Reduction in Area, % 40 to 45
40
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 590 to 640
880
Tensile Strength: Yield (Proof), MPa 320 to 540
660

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
870
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
17
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.5
Embodied Energy, MJ/kg 18
36
Embodied Water, L/kg 46
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 100
150
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 790
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 23
32
Strength to Weight: Bending, points 20 to 21
26
Thermal Diffusivity, mm2/s 14
4.6
Thermal Shock Resistance, points 19 to 20
31

Alloy Composition

Carbon (C), % 0.35 to 0.42
0 to 0.060
Chromium (Cr), % 0
15.5 to 17.5
Iron (Fe), % 98.6 to 99.05
74.4 to 81
Manganese (Mn), % 0.6 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030