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Titanium Grade 9 vs Ti Grade 24

Titanium · grade comparison

Titanium Grade 9 and Ti Grade 24 are both titanium grades. Ti Grade 24 is the stronger of the two: yield strength 880 MPa (128 ksi) against 570 MPa (82.7 ksi) for Grade 9, about 54% more; tensile strength follows at 950 MPa (138 ksi) vs 690 MPa (100 ksi). In exchange, Grade 9 is the more ductile: elongation 20% versus 14% for Ti Grade 24, and Ti Grade 24 is harder (334 HB vs 250 HB). Ti Grade 24 is stiffer (114 GPa vs 100 GPa) and Ti Grade 24 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.

Ti Grade 24Choose it when strength drives the design, or when the part sees heat.

Grade 9 vs Ti Grade 24: properties

Grade 9Ti Grade 24

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

100 GPa14.5 Msi
114 GPa16.5 Msi

Bulk Modulus

107 GPa15.5 Msi
110 GPa16 Msi

Poisson's Ratio

0.3
0.34

Tensile Strength (Ultimate)

690 MPa100 ksi
950 MPa138 ksi

Yield Strength (0.2% offset)

570 MPa82.7 ksi
880 MPa128 ksi

Elongation at Break

20%
14%

Reduction in Area

38%
36%

Compressive Strength

600 MPa87 ksi
970 MPa141 ksi

Shear Strength

450 MPa65.3 ksi
580 MPa84.1 ksi

Fatigue Strength (Endurance Limit)

450 MPa65.3 ksi
510 MPa74 ksi

Fracture Toughness (K_IC)

70 MPa·√m63.7 ksi·√in
75 MPa·√m68.3 ksi·√in

Charpy V-Notch Impact (RT)

25 J18.4 ft·lbf
20 J14.8 ft·lbf

Hardness, Brinell

250 HB
334 HB

Hardness, Rockwell C

24 HRC
36 HRC

Hardness, Vickers

260 HV
349 HV

Same in both: Shear Modulus 44 GPa6.4 Msi

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,650°C3,002 °F
1,604°C2,919 °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
6.7 W/m·K3.9 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

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

Max Service Temperature (continuous)

300°C572 °F
400°C752 °F

Min Service Temperature

-250°C-418 °F
-196°C-321 °F

Same in both: Latent Heat of Fusion 365 J/g157 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

1.4 % IACS
1 % IACS

Electrical Resistivity

1.26×10⁻⁶ Ω·m49.6 µΩ·in
1.7×10⁻⁶ Ω·m66.9 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

90 / 100
93 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V

Manufacturability

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

Machinability

28 / 100
20 / 100

Machinability Rating (AISI 1212 = 100 %)

25%
22%

Weldability

80 / 100
70 / 100

Formability (cold)

60 / 100
25 / 100

Castability

30 / 100
40 / 100

Brazeability / Solderability

45 / 100
35 / 100

Same in both: 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

Embodied Carbon (primary production)

42 kg CO₂/kg
45 kg CO₂/kg

Embodied Water

350 L/kg41.9 gal/lb
700 L/kg83.9 gal/lb

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

154 kN·m/kg
214 kN·m/kg

Specific Stiffness (E / density)

22.3 MN·m/kg
25.7 MN·m/kg

Modulus of Resilience

1,625 kJ/m³
3,396 kJ/m³

Thermal Diffusivity

3.1 mm²/s
2.9 mm²/s

Same in both: Thermal Shock Resistance Index 6

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 9Ti Grade 24

Manufacturing and finishing

CapabilityGrade 9Ti Grade 24
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 Ti Grade 24 — frequently asked

Is Ti Grade 24 stronger than Grade 9?

Yes. Ti Grade 24 has a typical yield strength of 880 MPa (128 ksi) against 570 MPa (82.7 ksi) for Grade 9 — about 54% more. Tensile strength is 950 MPa (138 ksi) vs 690 MPa (100 ksi).

Which is cheaper, Grade 9 or Ti Grade 24?

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 Ti Grade 24?

Grade 9, by a small margin. Both rate poor for machinability — 28/100 against 20/100 for Ti Grade 24; for welding the order is Grade 9 first (very good, 80/100) then Ti Grade 24 (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 9 and Ti Grade 24 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.