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AWS E307 vs. SAE-AISI 4145 Steel

Both AWS E307 and SAE-AISI 4145 steel are iron alloys. They have 67% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E307 and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
16
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 660
580

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
42
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
1.5
Embodied Energy, MJ/kg 49
20
Embodied Water, L/kg 160
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0.040 to 0.14
0.43 to 0.48
Chromium (Cr), % 18 to 21.5
0.8 to 1.1
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 69.2
96.7 to 97.7
Manganese (Mn), % 3.3 to 4.8
0.75 to 1.0
Molybdenum (Mo), % 0.5 to 1.5
0.15 to 0.25
Nickel (Ni), % 9.0 to 10.7
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040