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Titanium Grade 9 vs VT14

Titanium · grade comparison

Titanium Grade 9 and VT14 are both titanium grades. VT14 is the stronger of the two: yield strength 850 MPa (123 ksi) against 570 MPa (82.7 ksi) for Grade 9, about 49% more; tensile strength follows at 930 MPa (135 ksi) vs 690 MPa (100 ksi). In exchange, Grade 9 is the more ductile: elongation 20% versus 12% for VT14, and VT14 is harder (285 HB vs 250 HB). VT14 is stiffer (115 GPa vs 100 GPa) and VT14 runs hotter in service (400°C vs 300°C continuous). On the shop floor, Grade 9 welds better (80 vs 70 out of 100).

Grade 9Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

VT14Choose it when strength drives the design, or when the part sees heat.

Grade 9 vs VT14: properties

Grade 9VT14

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

100 GPa14.5 Msi
115 GPa16.7 Msi

Bulk Modulus

107 GPa15.5 Msi
110 GPa16 Msi

Poisson's Ratio

0.3
0.32

Tensile Strength (Ultimate)

690 MPa100 ksi
930 MPa135 ksi

Yield Strength (0.2% offset)

570 MPa82.7 ksi
850 MPa123 ksi

Elongation at Break

20%
12%

Reduction in Area

38%
35%

Compressive Strength

600 MPa87 ksi
960 MPa139 ksi

Shear Strength

450 MPa65.3 ksi
570 MPa82.7 ksi

Fatigue Strength (Endurance Limit)

450 MPa65.3 ksi
470 MPa68.2 ksi

Fracture Toughness (K_IC)

70 MPa·√m63.7 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

25 J18.4 ft·lbf
35 J25.8 ft·lbf

Hardness, Brinell

250 HB
285 HB

Hardness, Rockwell C

24 HRC
30 HRC

Hardness, Vickers

260 HV
300 HV

Same in both: Shear Modulus 44 GPa6.4 Msi

Physical

Density and transition temperatures.

Density

4.48 g/cm³0.16 lb/in³
4.52 g/cm³0.16 lb/in³

Melting Point (Solidus)

1,650°C3,002 °F
1,600°C2,912 °F

Liquidus Temperature

1,704°C3,099 °F
1,660°C3,020 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

7.6 W/m·K4.4 BTU/hr·ft·°F
8.4 W/m·K4.9 BTU/hr·ft·°F

Specific Heat Capacity

544 J/kg·K0.13 BTU/lb·°F
500 J/kg·K0.12 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

9.2 µm/m·K5.1 µin/in·°F
8.6 µm/m·K4.8 µin/in·°F

Latent Heat of Fusion

365 J/g157 BTU/lb
390 J/g168 BTU/lb

Max Service Temperature (continuous)

300°C572 °F
400°C752 °F

Min Service Temperature

-250°C-418 °F
-196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.4 % IACS
1.1 % IACS

Electrical Resistivity

1.26×10⁻⁶ Ω·m49.6 µΩ·in
1.6×10⁻⁶ Ω·m63 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 90 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

28 / 100
22 / 100

Machinability Rating (AISI 1212 = 100 %)

25%
20%

Weldability

80 / 100
70 / 100

Formability (cold)

60 / 100
45 / 100

Castability

30 / 100
35 / 100

Same in both: Brazeability / Solderability 45 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

650 MJ/kg279,450 BTU/lb
700 MJ/kg300,946 BTU/lb

Same in both: Embodied Carbon (primary production) 42 kg CO₂/kg · Embodied Water 350 L/kg41.9 gal/lb · Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

154 kN·m/kg
206 kN·m/kg

Specific Stiffness (E / density)

22.3 MN·m/kg
25.4 MN·m/kg

Modulus of Resilience

1,625 kJ/m³
3,141 kJ/m³

Thermal Diffusivity

3.1 mm²/s
3.7 mm²/s

Thermal Shock Resistance Index

6
8

Strength versus weight

Yield strength against density for every titanium grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

3005007001,0004.555.5Density (g/cm³)Yield strength (MPa) — log scaleGrade 9VT14

Manufacturing and finishing

CapabilityGrade 9VT14
CNC machiningYes—
Sheet metalYes—
Default conditionO—
Relative cost$$$$ High$$$$ High
Min. machined wall1 mm—
Best machined surfaceRa 1.6 µm—
AlCrNYes—
AlTiNYes—
Anodizing Type IIYes—
CVD Al2O3Yes—
CVD TiCNYes—
CVD TiNYes—
CerakoteYes—
CrNYes—
DLCYes—
ElectropolishingYes—
HVOF CoatingYes—
MoS2Yes—
Multilayer CVDYes—
TiAlNYes—
TiB2Yes—
TiCNYes—
TiNYes—
WC/CYes—

They share 1 finish: Plasma Spray.

Grade 9 vs VT14 — frequently asked

Is VT14 stronger than Grade 9?

Yes. VT14 has a typical yield strength of 850 MPa (123 ksi) against 570 MPa (82.7 ksi) for Grade 9 — about 49% more. Tensile strength is 930 MPa (135 ksi) vs 690 MPa (100 ksi).

Which is cheaper, Grade 9 or VT14?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, Grade 9 or VT14?

Grade 9, by a small margin. Both rate poor for machinability — 28/100 against 22/100 for VT14; for welding the order is Grade 9 first (very good, 80/100) then VT14 (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 9 and VT14 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.