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AWS E307 vs. SAE-AISI 4340M Steel

Both AWS E307 and SAE-AISI 4340M steel are iron alloys. They have 69% of their average alloy composition in common. There are 25 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 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
6.0
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 660
2340

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
38
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 17
3.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
1.9
Embodied Energy, MJ/kg 49
26
Embodied Water, L/kg 160
55

Common Calculations

PREN (Pitting Resistance) 23
2.2
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
84
Strength to Weight: Bending, points 22
51
Thermal Diffusivity, mm2/s 4.1
10
Thermal Shock Resistance, points 17
70

Alloy Composition

Carbon (C), % 0.040 to 0.14
0.38 to 0.43
Chromium (Cr), % 18 to 21.5
0.7 to 1.0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 69.2
93.3 to 94.8
Manganese (Mn), % 3.3 to 4.8
0.65 to 0.9
Molybdenum (Mo), % 0.5 to 1.5
0.35 to 0.45
Nickel (Ni), % 9.0 to 10.7
1.7 to 2.0
Phosphorus (P), % 0 to 0.040
0 to 0.012
Silicon (Si), % 0 to 1.0
1.5 to 1.8
Sulfur (S), % 0 to 0.030
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1