SAE-AISI O6 Steel vs. EN 1.3975 Stainless Steel

Both SAE-AISI O6 steel and EN 1.3975 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 1.3975 stainless steel.

SAE-AISI O6 (T31506) Oil-Hardening Steel EN 1.3975 (GX3CrNiMnSi17-9-8) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		180
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		71
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		670 to 2070
Tensile Strength: Ultimate (UTS), MPa		660

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		340

Melting Completion (Liquidus), °C		1430
Melting Completion (Liquidus), °C		1360

Melting Onset (Solidus), °C		1390
Melting Onset (Solidus), °C		1320

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		500

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		16

Otherwise Unclassified Properties

Base Metal Price, % relative		2.3
Base Metal Price, % relative		15

Density, g/cm³		7.7
Density, g/cm³		7.5

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		3.3

Embodied Energy, MJ/kg		21
Embodied Energy, MJ/kg		47

Embodied Water, L/kg		47
Embodied Water, L/kg		150

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		26

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

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

Thermal Shock Resistance, points		22 to 69
Thermal Shock Resistance, points		15

Alloy Composition

Carbon (C), %		1.3 to 1.6
Carbon (C), %		0 to 0.050

Chromium (Cr), %		0 to 0.3
Chromium (Cr), %		16 to 18

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

Iron (Fe), %		94.6 to 97.7
Iron (Fe), %		58.2 to 65.4

Manganese (Mn), %		0.3 to 1.1
Manganese (Mn), %		7.0 to 9.0

Molybdenum (Mo), %		0.2 to 0.3
Molybdenum (Mo), %		0 to 1.0

Nickel (Ni), %		0 to 0.3
Nickel (Ni), %		8.0 to 9.0

Nitrogen (N), %		0
Nitrogen (N), %		0.080 to 0.18

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.045

Silicon (Si), %		0.55 to 1.5
Silicon (Si), %		3.5 to 4.5

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