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Titanium Grade 11 vs Grade 2

Titanium · grade comparison

Titanium Grade 11 and Grade 2 are both titanium grades. Grade 2 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 220 MPa (31.9 ksi) for Grade 11, about 73% more; tensile strength follows at 440 MPa (63.8 ksi) vs 330 MPa (47.9 ksi). Grade 2 is harder — 150 HB against 120 HB for Grade 11 — which matters for wear surfaces and threads. Grade 11 conducts electricity better (3.5 % IACS vs 3.1 % IACS). On the shop floor, Grade 11 forms better (excellent vs very good) and Grade 11 sits in a lower cost tier (high, $$$$) than Grade 2 (specialty, $$$$$).

Grade 11Choose it when cost is the deciding factor.

Grade 2Choose it when strength drives the design, or when surface hardness matters.

Grade 11 vs Grade 2: properties

Grade 11Grade 2

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

330 MPa47.9 ksi
440 MPa63.8 ksi

Yield Strength (0.2% offset)

220 MPa31.9 ksi
380 MPa55.1 ksi

Elongation at Break

30%
28%

Compressive Strength

250 MPa36.3 ksi
440 MPa63.8 ksi

Shear Strength

235 MPa34.1 ksi
320 MPa46.4 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
240 MPa34.8 ksi

Fracture Toughness (K_IC)

90 MPa·√m81.9 ksi·√in
70 MPa·√m63.7 ksi·√in

Charpy V-Notch Impact (RT)

55 J40.6 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

120 HB
150 HB

Hardness, Rockwell B

70 HRB
80 HRB

Hardness, Vickers

125 HV
160 HV

Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 45 GPa6.5 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Reduction in Area 50%

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,660°C3,020 °F
1,665°C3,029 °F

Same in both: Density 4.51 g/cm³0.16 lb/in³ · Liquidus Temperature 1,670°C3,038 °F

Thermal

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

Thermal Conductivity

16.5 W/m·K9.5 BTU/hr·ft·°F
16.4 W/m·K9.5 BTU/hr·ft·°F

Latent Heat of Fusion

320 J/g138 BTU/lb
365 J/g157 BTU/lb

Min Service Temperature

-196°C-321 °F
-250°C-418 °F

Same in both: Specific Heat Capacity 523 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.6 µm/m·K4.8 µin/in·°F · Max Service Temperature (continuous) 300°C572 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.5 % IACS
3.1 % IACS

Electrical Resistivity

5×10⁻⁷ Ω·m19.7 µΩ·in
5.6×10⁻⁷ Ω·m22 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.05 V
-0.1 V

Corrosion Resistance

96 / 100
93 / 100

Manufacturability

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

Machinability

45 / 100
40 / 100

Weldability

92 / 100
90 / 100

Formability (cold)

92 / 100
78 / 100

Brazeability / Solderability

40 / 100
35 / 100

Polishability

70 / 100
75 / 100

Castability

—
45 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 40%

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

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

Embodied Carbon (primary production)

40 kg CO₂/kg
38 kg CO₂/kg

Typical Recycled Content

20%
25%

Same in both: Embodied Water 500 L/kg59.9 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

73 kN·m/kg
98 kN·m/kg

Modulus of Resilience

235 kJ/m³
701 kJ/m³

Thermal Shock Resistance Index

6
8

Same in both: Specific Stiffness (E / density) 22.8 MN·m/kg · Thermal Diffusivity 7 mm²/s

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 2Grade 11

Manufacturing and finishing

CapabilityGrade 11Grade 2
CNC machining—Yes
Sheet metal—Yes
Default condition—O
Relative cost$$$$ High$$$$$ Specialty
Min. machined wall—1 mm
Best machined surface—Ra 1.6 µm
AlCrN—Yes
AlTiN—Yes
Anodizing Type II—Yes
CVD Al2O3—Yes
CVD TiCN—Yes
CVD TiN—Yes
Cerakote—Yes
CrN—Yes
DLC—Yes
Electropolishing—Yes
HVOF Coating—Yes
MoS2—Yes
Multilayer CVD—Yes
TiAlN—Yes
TiB2—Yes
TiCN—Yes
TiN—Yes
WC/C—Yes

They share 1 finish: Plasma Spray.

Grade 11 vs Grade 2 — frequently asked

Is Grade 2 stronger than Grade 11?

Yes. Grade 2 has a typical yield strength of 380 MPa (55.1 ksi) against 220 MPa (31.9 ksi) for Grade 11 — about 73% more. Tensile strength is 440 MPa (63.8 ksi) vs 330 MPa (47.9 ksi).

Which is cheaper, Grade 11 or Grade 2?

Grade 11 is the lower-cost material: it sits in the high tier ($$$$) while Grade 2 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, Grade 11 or Grade 2?

Grade 11, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for Grade 2.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 11 and Grade 2 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.