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SAE-AISI 4340M Steel vs. AWS E209

Both SAE-AISI 4340M steel and AWS E209 are iron alloys. They have 62% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is AWS E209.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.0
17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 2340
770

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
4.4
Embodied Energy, MJ/kg 26
63
Embodied Water, L/kg 55
180

Common Calculations

PREN (Pitting Resistance) 2.2
33
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 84
28
Strength to Weight: Bending, points 51
24
Thermal Shock Resistance, points 70
19

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.060
Chromium (Cr), % 0.7 to 1.0
20.5 to 24
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 93.3 to 94.8
51.5 to 64.3
Manganese (Mn), % 0.65 to 0.9
4.0 to 7.0
Molybdenum (Mo), % 0.35 to 0.45
1.5 to 3.0
Nickel (Ni), % 1.7 to 2.0
9.5 to 12
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.012
0 to 0.040
Silicon (Si), % 1.5 to 1.8
0 to 1.0
Sulfur (S), % 0 to 0.012
0 to 0.030
Vanadium (V), % 0.050 to 0.1
0.1 to 0.3