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AWS E309Nb vs. SAE-AISI M42 Steel

Both AWS E309Nb and SAE-AISI M42 steel are iron alloys. They have 65% 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 AWS E309Nb and the bottom bar is SAE-AISI M42 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 78
78
Tensile Strength: Ultimate (UTS), MPa 620
810 to 2310

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1540
Melting Onset (Solidus), °C 1380
1490
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 4.4
7.4
Embodied Energy, MJ/kg 64
100
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 25
38
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
28 to 79
Strength to Weight: Bending, points 21
24 to 48
Thermal Diffusivity, mm2/s 4.0
5.4
Thermal Shock Resistance, points 16
25 to 71

Alloy Composition

Carbon (C), % 0 to 0.12
1.1 to 1.2
Chromium (Cr), % 22 to 25
3.5 to 4.3
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0 to 0.75
0 to 0.25
Iron (Fe), % 54.8 to 64.8
76.3 to 81
Manganese (Mn), % 0.5 to 2.5
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.75
9.0 to 10
Nickel (Ni), % 12 to 14
0 to 0.3
Niobium (Nb), % 0.7 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 0.65
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.2 to 1.9
Vanadium (V), % 0
1.0 to 1.4