SAE-AISI 9255 Steel vs. SAE-AISI T1 Steel

Both SAE-AISI 9255 steel and SAE-AISI T1 steel are iron alloys. They have 76% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 9255 steel and the bottom bar is SAE-AISI T1 steel.

SAE-AISI 9255 (G92550) Silicon Steel SAE-AISI T1 (T12001) Tungsten High-Speed Steel

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		0.29

Shear Modulus, GPa		72
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		680
Tensile Strength: Ultimate (UTS), MPa		770 to 2130

Thermal Properties

Latent Heat of Fusion, J/g		280
Latent Heat of Fusion, J/g		240

Melting Completion (Liquidus), °C		1430
Melting Completion (Liquidus), °C		1810

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

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		410

Thermal Conductivity, W/m-K		46
Thermal Conductivity, W/m-K		20

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		2.0
Base Metal Price, % relative		45

Density, g/cm³		7.7
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		8.2

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		46
Embodied Water, L/kg		90

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		24
Strength to Weight: Axial, points		23 to 64

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		20 to 40

Thermal Diffusivity, mm²/s		13
Thermal Diffusivity, mm²/s		5.2

Thermal Shock Resistance, points		21
Thermal Shock Resistance, points		23 to 64

Alloy Composition

Carbon (C), %		0.51 to 0.59
Carbon (C), %		0.65 to 0.8

Chromium (Cr), %		0
Chromium (Cr), %		3.8 to 4.5

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

Iron (Fe), %		96.2 to 97
Iron (Fe), %		73.2 to 77.2

Manganese (Mn), %		0.7 to 1.0
Manganese (Mn), %		0.1 to 0.4

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

Phosphorus (P), %		0 to 0.035
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		1.8 to 2.2
Silicon (Si), %		0.2 to 0.4

Sulfur (S), %		0 to 0.040
Sulfur (S), %		0 to 0.030

Tungsten (W), %		0
Tungsten (W), %		17.3 to 18.8

Vanadium (V), %		0
Vanadium (V), %		0.9 to 1.3