SAE-AISI T4 Steel vs. N08135 Stainless Steel

Both SAE-AISI T4 steel and N08135 stainless steel are iron alloys. They have 42% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T4 steel and the bottom bar is N08135 stainless steel.

SAE-AISI T4 (T12004) Tungsten High-Speed Steel UNS N08135 Iron-Nickel-Chromium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		210
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		80
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		800 to 2140
Tensile Strength: Ultimate (UTS), MPa		570

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		1810
Melting Completion (Liquidus), °C		1440

Melting Onset (Solidus), °C		1750
Melting Onset (Solidus), °C		1390

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		460

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

Otherwise Unclassified Properties

Base Metal Price, % relative		55
Base Metal Price, % relative		39

Density, g/cm³		9.4
Density, g/cm³		8.2

Embodied Carbon, kg CO₂/kg material		8.5
Embodied Carbon, kg CO₂/kg material		6.8

Embodied Energy, MJ/kg		130
Embodied Energy, MJ/kg		94

Embodied Water, L/kg		120
Embodied Water, L/kg		220

Common Calculations

PREN (Pitting Resistance)		37
PREN (Pitting Resistance)		38

Stiffness to Weight: Axial, points		12
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		21
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		24 to 64
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		20 to 39
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		24 to 64
Thermal Shock Resistance, points		13

Alloy Composition

Carbon (C), %		0.7 to 0.8
Carbon (C), %		0 to 0.030

Chromium (Cr), %		3.8 to 4.5
Chromium (Cr), %		20.5 to 23.5

Cobalt (Co), %		4.3 to 5.8
Cobalt (Co), %		0

Copper (Cu), %		0 to 0.25
Copper (Cu), %		0 to 0.7

Iron (Fe), %		66.3 to 72.3
Iron (Fe), %		30.2 to 42.3

Manganese (Mn), %		0.1 to 0.4
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0.4 to 1.0
Molybdenum (Mo), %		4.0 to 5.0

Nickel (Ni), %		0 to 0.3
Nickel (Ni), %		33 to 38

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

Silicon (Si), %		0.2 to 0.4
Silicon (Si), %		0 to 0.75

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

Tungsten (W), %		17.5 to 19
Tungsten (W), %		0.2 to 0.8

Vanadium (V), %		0.8 to 1.2
Vanadium (V), %		0