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AWS E320LR vs. SAE-AISI M3 Class 2 Steel

Both AWS E320LR and SAE-AISI M3 class 2 steel are iron alloys. They have 45% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AWS E320LR and the bottom bar is SAE-AISI M3 class 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 580
770 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1410
1620
Melting Onset (Solidus), °C 1360
1570
Specific Heat Capacity, J/kg-K 460
440
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
25
Density, g/cm3 8.2
8.3
Embodied Carbon, kg CO2/kg material 6.2
12
Embodied Energy, MJ/kg 87
180
Embodied Water, L/kg 220
110

Common Calculations

PREN (Pitting Resistance) 28
33
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20
26 to 74
Strength to Weight: Bending, points 19
22 to 45
Thermal Shock Resistance, points 15
24 to 69

Alloy Composition

Carbon (C), % 0 to 0.030
1.2 to 1.3
Chromium (Cr), % 19 to 21
3.8 to 4.5
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 32.7 to 42.5
75.8 to 82.3
Manganese (Mn), % 1.5 to 2.5
0.15 to 0.4
Molybdenum (Mo), % 2.0 to 3.0
4.8 to 6.5
Nickel (Ni), % 32 to 36
0 to 0.3
Niobium (Nb), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.3
0.2 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.8 to 3.8