SAE-AISI O6 Steel vs. EN 1.4646 Stainless Steel

Both SAE-AISI O6 steel and EN 1.4646 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O6 steel and the bottom bar is EN 1.4646 stainless steel.

SAE-AISI O6 (T31506) Oil-Hardening Steel EN 1.4646 (X6CrMnNiCuN18-12-4-2) Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		180
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		71
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		670 to 2070
Tensile Strength: Ultimate (UTS), MPa		750

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		290

Melting Completion (Liquidus), °C		1430
Melting Completion (Liquidus), °C		1390

Melting Onset (Solidus), °C		1390
Melting Onset (Solidus), °C		1340

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

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Base Metal Price, % relative		2.3
Base Metal Price, % relative		13

Density, g/cm³		7.7
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		2.8

Embodied Energy, MJ/kg		21
Embodied Energy, MJ/kg		41

Embodied Water, L/kg		47
Embodied Water, L/kg		160

Common Calculations

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

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

Strength to Weight: Axial, points		24 to 74
Strength to Weight: Axial, points		27

Strength to Weight: Bending, points		22 to 47
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		22 to 69
Thermal Shock Resistance, points		16

Alloy Composition

Carbon (C), %		1.3 to 1.6
Carbon (C), %		0.020 to 0.1

Chromium (Cr), %		0 to 0.3
Chromium (Cr), %		17 to 19

Copper (Cu), %		0 to 0.25
Copper (Cu), %		1.5 to 3.0

Iron (Fe), %		94.6 to 97.7
Iron (Fe), %		59 to 67.3

Manganese (Mn), %		0.3 to 1.1
Manganese (Mn), %		10.5 to 12.5

Molybdenum (Mo), %		0.2 to 0.3
Molybdenum (Mo), %		0 to 0.5

Nickel (Ni), %		0 to 0.3
Nickel (Ni), %		3.5 to 4.5

Nitrogen (N), %		0
Nitrogen (N), %		0.2 to 0.3

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.050

Silicon (Si), %		0.55 to 1.5
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.015