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AWS E309Mo vs. SAE-AISI D4 Steel

Both AWS E309Mo and SAE-AISI D4 steel are iron alloys. They have 72% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS E309Mo and the bottom bar is SAE-AISI D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
8.4 to 15
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 620
760 to 2060

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
31
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
5.0

Otherwise Unclassified Properties

Base Metal Price, % relative 22
8.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.2
3.3
Embodied Energy, MJ/kg 59
49
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 32
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
27 to 75
Strength to Weight: Bending, points 20
24 to 47
Thermal Diffusivity, mm2/s 3.9
8.3
Thermal Shock Resistance, points 15
23 to 63

Alloy Composition

Carbon (C), % 0 to 0.12
2.1 to 2.4
Chromium (Cr), % 22 to 25
11 to 13
Copper (Cu), % 0 to 0.75
0 to 0.25
Iron (Fe), % 53.6 to 63.5
80.6 to 86.3
Manganese (Mn), % 0.5 to 2.5
0 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0.7 to 1.2
Nickel (Ni), % 12 to 14
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 1.0