R58150 Titanium vs. EN 1.7108 Steel

R58150 titanium belongs to the titanium alloys classification, while EN 1.7108 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is EN 1.7108 steel.

UNS R58150 Titanium (Ti-15Mo)EN 1.7108 (61SiCr7) Silicon-Chromium Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		140
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.32
Poisson's Ratio		0.29

Shear Modulus, GPa		52
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		770
Tensile Strength: Ultimate (UTS), MPa		670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g		410
Latent Heat of Fusion, J/g		280

Maximum Temperature: Mechanical, °C		320
Maximum Temperature: Mechanical, °C		410

Melting Completion (Liquidus), °C		1760
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1700
Melting Onset (Solidus), °C		1390

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

Thermal Expansion, µm/m-K		8.4
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		48
Base Metal Price, % relative		2.1

Density, g/cm³		5.4
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		31
Embodied Carbon, kg CO₂/kg material		1.5

Embodied Energy, MJ/kg		480
Embodied Energy, MJ/kg		20

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

Common Calculations

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

Stiffness to Weight: Bending, points		32
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		40
Strength to Weight: Axial, points		24 to 75

Strength to Weight: Bending, points		35
Strength to Weight: Bending, points		22 to 47

Thermal Shock Resistance, points		48
Thermal Shock Resistance, points		20 to 63

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0.57 to 0.65

Chromium (Cr), %		0
Chromium (Cr), %		0.2 to 0.45

Hydrogen (H), %		0 to 0.015
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.1
Iron (Fe), %		95.9 to 96.9

Manganese (Mn), %		0
Manganese (Mn), %		0.7 to 1.0

Molybdenum (Mo), %		14 to 16
Molybdenum (Mo), %		0

Nitrogen (N), %		0 to 0.050
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.2
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.025

Silicon (Si), %		0
Silicon (Si), %		1.6 to 2.0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.025

Titanium (Ti), %		83.5 to 86
Titanium (Ti), %		0