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SAE-AISI M3 Class 2 Steel vs. AWS E349

Both SAE-AISI M3 class 2 steel and AWS E349 are iron alloys. They have 73% of their average alloy composition in common. There are 22 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 SAE-AISI M3 class 2 steel and the bottom bar is AWS E349.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 770 to 2210
770

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1620
1470
Melting Onset (Solidus), °C 1570
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 12
4.9
Embodied Energy, MJ/kg 180
72
Embodied Water, L/kg 110
150

Common Calculations

PREN (Pitting Resistance) 33
24
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 74
27
Strength to Weight: Bending, points 22 to 45
24
Thermal Diffusivity, mm2/s 7.2
4.1
Thermal Shock Resistance, points 24 to 69
20

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.13
Chromium (Cr), % 3.8 to 4.5
18 to 21
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 75.8 to 82.3
60.5 to 71.1
Manganese (Mn), % 0.15 to 0.4
0.5 to 2.5
Molybdenum (Mo), % 4.8 to 6.5
0.35 to 0.65
Nickel (Ni), % 0 to 0.3
8.0 to 10
Niobium (Nb), % 0
0.75 to 1.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.15
Tungsten (W), % 5.0 to 6.8
1.3 to 1.8
Vanadium (V), % 2.8 to 3.8
0.1 to 0.3