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Titanium Grade 2 vs Ti Grade 12

Titanium · grade comparison

Titanium Grade 2 and Ti Grade 12 are both titanium grades. Ti Grade 12 is the stronger of the two: yield strength 450 MPa (65.3 ksi) against 380 MPa (55.1 ksi) for Grade 2, about 18% more; tensile strength follows at 550 MPa (79.8 ksi) vs 440 MPa (63.8 ksi). In exchange, Grade 2 is the more ductile: elongation 28% versus 22% for Ti Grade 12, and Ti Grade 12 is harder (200 HB vs 150 HB). Ti Grade 12 conducts heat better (19 W/m·K vs 16.4 W/m·K). On the shop floor, Grade 2 machines more easily (fair vs poor) and Ti Grade 12 sits in a lower cost tier (high, $$$$) than Grade 2 (specialty, $$$$$).

Grade 2Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.

Ti Grade 12Choose it when strength drives the design, or when cost is the deciding factor.

Grade 2 vs Ti Grade 12: properties

Grade 2Ti Grade 12

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

45 GPa6.5 Msi
43 GPa6.2 Msi

Tensile Strength (Ultimate)

440 MPa63.8 ksi
550 MPa79.8 ksi

Yield Strength (0.2% offset)

380 MPa55.1 ksi
450 MPa65.3 ksi

Elongation at Break

28%
22%

Reduction in Area

50%
40%

Compressive Strength

440 MPa63.8 ksi
460 MPa66.7 ksi

Shear Strength

320 MPa46.4 ksi
370 MPa53.7 ksi

Fatigue Strength (Endurance Limit)

240 MPa34.8 ksi
300 MPa43.5 ksi

Fracture Toughness (K_IC)

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

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
30 J22.1 ft·lbf

Hardness, Brinell

150 HB
200 HB

Hardness, Rockwell B

80 HRB
94 HRB

Hardness, Vickers

160 HV
210 HV

Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,665°C3,029 °F
1,650°C3,002 °F

Liquidus Temperature

1,670°C3,038 °F
1,700°C3,092 °F

Same in both: Density 4.51 g/cm³0.16 lb/in³

Thermal

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

Thermal Conductivity

16.4 W/m·K9.5 BTU/hr·ft·°F
19 W/m·K11 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

8.6 µm/m·K4.8 µin/in·°F
9.5 µm/m·K5.3 µin/in·°F

Max Service Temperature (continuous)

300°C572 °F
315°C599 °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

3.1 % IACS
3.3 % IACS

Electrical Resistivity

5.6×10⁻⁷ Ω·m22 µΩ·in
5.2×10⁻⁷ Ω·m20.5 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.1 V
-0.12 V

Corrosion Resistance

93 / 100
92 / 100

Manufacturability

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

Machinability

40 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

40%
28%

Weldability

90 / 100
85 / 100

Formability (cold)

78 / 100
55 / 100

Castability

45 / 100
35 / 100

Brazeability / Solderability

35 / 100
40 / 100

Polishability

75 / 100
70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

650 MJ/kg279,450 BTU/lb
680 MJ/kg292,348 BTU/lb

Embodied Carbon (primary production)

38 kg CO₂/kg
44 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
900 L/kg108 gal/lb

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

98 kN·m/kg
122 kN·m/kg

Modulus of Resilience

701 kJ/m³
983 kJ/m³

Thermal Diffusivity

7 mm²/s
7.7 mm²/s

Thermal Shock Resistance Index

8
11

Same in both: Specific Stiffness (E / density) 22.8 MN·m/kg

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 2Ti Grade 12

Manufacturing and finishing

CapabilityGrade 2Ti Grade 12
CNC machiningYes—
Sheet metalYes—
Default conditionO—
Relative cost$$$$$ Specialty$$$$ 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 2 vs Ti Grade 12 — frequently asked

Is Ti Grade 12 stronger than Grade 2?

Yes. Ti Grade 12 has a typical yield strength of 450 MPa (65.3 ksi) against 380 MPa (55.1 ksi) for Grade 2 — about 18% more. Tensile strength is 550 MPa (79.8 ksi) vs 440 MPa (63.8 ksi).

Which is cheaper, Grade 2 or Ti Grade 12?

Ti Grade 12 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 2 or Ti Grade 12?

Grade 2. Its machinability rates fair (40/100) against poor (30/100) for Ti Grade 12; for welding the order is Grade 2 first (excellent, 90/100) then Ti Grade 12 (excellent, 85/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Grade 2 and Ti Grade 12 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.