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AWS E209 vs. SAE-AISI A4 Steel

Both AWS E209 and SAE-AISI A4 steel are iron alloys. They have 63% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AWS E209 and the bottom bar is SAE-AISI A4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 770
710 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 21
3.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.8
Embodied Energy, MJ/kg 63
24
Embodied Water, L/kg 180
59

Common Calculations

PREN (Pitting Resistance) 33
5.3
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
25 to 73
Strength to Weight: Bending, points 24
23 to 46
Thermal Shock Resistance, points 19
23 to 67

Alloy Composition

Carbon (C), % 0 to 0.060
1.0 to 1.1
Chromium (Cr), % 20.5 to 24
0.9 to 2.2
Copper (Cu), % 0 to 0.75
0 to 0.25
Iron (Fe), % 51.5 to 64.3
92 to 95.5
Manganese (Mn), % 4.0 to 7.0
1.8 to 2.2
Molybdenum (Mo), % 1.5 to 3.0
0.9 to 1.4
Nickel (Ni), % 9.5 to 12
0 to 0.3
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0