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Titanium B817 Type I vs CP-Ti Grade 2 (AM Powder)

Titanium · grade comparison

Titanium B817 Type I and CP-Ti Grade 2 (AM Powder) are both titanium grades. CP-Ti Grade 2 (AM Powder) is the stronger of the two: yield strength 530 MPa (76.9 ksi) against 350 MPa (50.8 ksi) for B817 Type I, about 51% more; tensile strength follows at 640 MPa (92.8 ksi) vs 450 MPa (65.3 ksi). CP-Ti Grade 2 (AM Powder) is harder — 205 HB against 160 HB for B817 Type I — which matters for wear surfaces and threads. On the shop floor, CP-Ti Grade 2 (AM Powder) welds better (excellent vs very good) and CP-Ti Grade 2 (AM Powder) forms better (very good vs good).

CP-Ti Grade 2 (AM Powder)Choose it when strength drives the design, or when surface hardness matters.

B817 Type I vs CP-Ti Grade 2 (AM Powder): properties

B817 Type ICP-Ti Grade 2 (AM Powder)

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

100 GPa14.5 Msi
105 GPa15.2 Msi

Shear Modulus

38 GPa5.5 Msi
45 GPa6.5 Msi

Tensile Strength (Ultimate)

450 MPa65.3 ksi
640 MPa92.8 ksi

Yield Strength (0.2% offset)

350 MPa50.8 ksi
530 MPa76.9 ksi

Reduction in Area

30%
35%

Compressive Strength

450 MPa65.3 ksi
620 MPa89.9 ksi

Shear Strength

300 MPa43.5 ksi
400 MPa58 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
250 MPa36.3 ksi

Fracture Toughness (K_IC)

55 MPa·√m50.1 ksi·√in
65 MPa·√m59.2 ksi·√in

Charpy V-Notch Impact (RT)

20 J14.8 ft·lbf
25 J18.4 ft·lbf

Hardness, Brinell

160 HB
205 HB

Hardness, Rockwell B

82 HRB
95 HRB

Hardness, Vickers

170 HV
220 HV

Same in both: Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Elongation at Break 18%

Physical

Density and transition temperatures.

Density

4.42 g/cm³0.16 lb/in³
4.51 g/cm³0.16 lb/in³

Same in both: Melting Point (Solidus) 1,660°C3,020 °F · Liquidus Temperature 1,670°C3,038 °F

Thermal

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

Thermal Conductivity

16 W/m·K9.2 BTU/hr·ft·°F
16.4 W/m·K9.5 BTU/hr·ft·°F

Latent Heat of Fusion

295 J/g127 BTU/lb
365 J/g157 BTU/lb

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 · Min Service Temperature -250°C-418 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 3.1 % IACS · Electrical Resistivity 5.6×10⁻⁷ Ω·m22 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

88 / 100
92 / 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

35 / 100
38 / 100

Machinability Rating (AISI 1212 = 100 %)

40%
35%

Weldability

75 / 100
88 / 100

Formability (cold)

55 / 100
70 / 100

Brazeability / Solderability

60 / 100
45 / 100

Castability

—
50 / 100

Same in both: Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

750 MJ/kg322,442 BTU/lb
900 MJ/kg386,931 BTU/lb

Embodied Carbon (primary production)

48 kg CO₂/kg
52 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
800 L/kg95.9 gal/lb

Same in both: Typical Recycled Content 20%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

102 kN·m/kg
142 kN·m/kg

Specific Stiffness (E / density)

22.6 MN·m/kg
23.3 MN·m/kg

Modulus of Resilience

613 kJ/m³
1,338 kJ/m³

Thermal Diffusivity

6.9 mm²/s
7 mm²/s

Thermal Shock Resistance Index

8
12

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 scaleB817 Type ICP-Ti Grade 2 (AM Powder)

Manufacturing and finishing

CapabilityB817 Type ICP-Ti Grade 2 (AM Powder)
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

B817 Type I vs CP-Ti Grade 2 (AM Powder) — frequently asked

Is CP-Ti Grade 2 (AM Powder) stronger than B817 Type I?

Yes. CP-Ti Grade 2 (AM Powder) has a typical yield strength of 530 MPa (76.9 ksi) against 350 MPa (50.8 ksi) for B817 Type I — about 51% more. Tensile strength is 640 MPa (92.8 ksi) vs 450 MPa (65.3 ksi).

Which is cheaper, B817 Type I or CP-Ti Grade 2 (AM Powder)?

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 welds better, B817 Type I or CP-Ti Grade 2 (AM Powder)?

CP-Ti Grade 2 (AM Powder). Its weldability rates excellent (88/100) against very good (75/100) for B817 Type I.

Ready to make it?

Upload a CAD file and FabDigit prices the part in B817 Type I and CP-Ti Grade 2 (AM Powder) 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.