SAE-AISI O2 Steel vs. AWS E209

Both SAE-AISI O2 steel and AWS E209 are iron alloys. They have 61% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O2 steel and the bottom bar is AWS E209.

SAE-AISI O2 (T31502) Oil-Hardening Steel AWS E209 (W32210) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		72
Shear Modulus, GPa		79

Tensile Strength: Ultimate (UTS), MPa		640 to 2050
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1450
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		1410
Melting Onset (Solidus), °C		1370

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		2.4
Base Metal Price, % relative		21

Density, g/cm³		7.8
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		1.8
Embodied Carbon, kg CO₂/kg material		4.4

Embodied Energy, MJ/kg		26
Embodied Energy, MJ/kg		63

Embodied Water, L/kg		50
Embodied Water, L/kg		180

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		23 to 73
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		21 to 46
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		22 to 70
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0.85 to 1.0
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0 to 0.5
Chromium (Cr), %		20.5 to 24

Copper (Cu), %		0 to 0.25
Copper (Cu), %		0 to 0.75

Iron (Fe), %		95 to 97.8
Iron (Fe), %		51.5 to 64.3

Manganese (Mn), %		1.4 to 1.8
Manganese (Mn), %		4.0 to 7.0

Molybdenum (Mo), %		0 to 0.3
Molybdenum (Mo), %		1.5 to 3.0

Nickel (Ni), %		0 to 0.3
Nickel (Ni), %		9.5 to 12

Nitrogen (N), %		0
Nitrogen (N), %		0.1 to 0.3

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.030

Vanadium (V), %		0 to 0.3
Vanadium (V), %		0.1 to 0.3