MakeItFrom.com
Menu (ESC)

SAE-AISI 4340M Steel vs. AWS E320LR

Both SAE-AISI 4340M steel and AWS E320LR are iron alloys. They have 42% 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 E320LR.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.0
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 2340
580

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
36
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.9
6.2
Embodied Energy, MJ/kg 26
87
Embodied Water, L/kg 55
220

Common Calculations

PREN (Pitting Resistance) 2.2
28
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 84
20
Strength to Weight: Bending, points 51
19
Thermal Shock Resistance, points 70
15

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.030
Chromium (Cr), % 0.7 to 1.0
19 to 21
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 93.3 to 94.8
32.7 to 42.5
Manganese (Mn), % 0.65 to 0.9
1.5 to 2.5
Molybdenum (Mo), % 0.35 to 0.45
2.0 to 3.0
Nickel (Ni), % 1.7 to 2.0
32 to 36
Niobium (Nb), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.012
0 to 0.020
Silicon (Si), % 1.5 to 1.8
0 to 0.3
Sulfur (S), % 0 to 0.012
0 to 0.015
Vanadium (V), % 0.050 to 0.1
0