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Titanium B817 Type II vs CP-Ti Powder for MIM

Titanium · grade comparison

Titanium B817 Type II and CP-Ti Powder for MIM are both titanium grades. B817 Type II is the stronger of the two: yield strength 855 MPa (124 ksi) against 380 MPa (55.1 ksi) for CP-Ti Powder for MIM, about 125% more; tensile strength follows at 930 MPa (135 ksi) vs 480 MPa (69.6 ksi). In exchange, CP-Ti Powder for MIM is the more ductile: elongation 15% versus 12% for B817 Type II, and B817 Type II is harder (330 HB vs 160 HB). B817 Type II is stiffer (113 GPa vs 100 GPa) and B817 Type II runs hotter in service (350°C vs 300°C continuous).

B817 Type IIChoose it when strength drives the design, or when the part sees heat.

CP-Ti Powder for MIMChoose it when the part is bent, formed or impact-loaded.

B817 Type II vs CP-Ti Powder for MIM: properties

B817 Type IICP-Ti Powder for MIM

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

113 GPa16.4 Msi
100 GPa14.5 Msi

Shear Modulus

43 GPa6.2 Msi
40 GPa5.8 Msi

Bulk Modulus

120 GPa17.4 Msi
108 GPa15.7 Msi

Tensile Strength (Ultimate)

930 MPa135 ksi
480 MPa69.6 ksi

Yield Strength (0.2% offset)

855 MPa124 ksi
380 MPa55.1 ksi

Elongation at Break

12%
15%

Reduction in Area

20%
25%

Compressive Strength

970 MPa141 ksi
500 MPa72.5 ksi

Shear Strength

550 MPa79.8 ksi
330 MPa47.9 ksi

Fatigue Strength (Endurance Limit)

480 MPa69.6 ksi
200 MPa29 ksi

Fracture Toughness (K_IC)

70 MPa·√m63.7 ksi·√in
55 MPa·√m50.1 ksi·√in

Charpy V-Notch Impact (RT)

18 J13.3 ft·lbf
20 J14.8 ft·lbf

Hardness, Brinell

330 HB
160 HB

Hardness, Rockwell C

35 HRC
—

Hardness, Vickers

345 HV
170 HV

Hardness, Rockwell B

—
85 HRB

Same in both: Poisson's Ratio 0.34

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,604°C2,919 °F
1,668°C3,034 °F

Liquidus Temperature

1,660°C3,020 °F
1,670°C3,038 °F

Thermal

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

Thermal Conductivity

6.7 W/m·K3.9 BTU/hr·ft·°F
15.5 W/m·K9 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

8.7 µm/m·K4.8 µin/in·°F
8.6 µm/m·K4.8 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

350°C662 °F
300°C572 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1 % IACS
3.1 % IACS

Electrical Resistivity

1.71×10⁻⁶ Ω·m67.3 µΩ·in
5.6×10⁻⁷ Ω·m22 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

90 / 100
85 / 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

20 / 100
25 / 100

Machinability Rating (AISI 1212 = 100 %)

22%
20%

Weldability

60 / 100
55 / 100

Formability (cold)

25 / 100
20 / 100

Brazeability / Solderability

40 / 100
50 / 100

Polishability

65 / 100
70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

680 MJ/kg292,348 BTU/lb
750 MJ/kg322,442 BTU/lb

Embodied Carbon (primary production)

42 kg CO₂/kg
48 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
600 L/kg71.9 gal/lb

Typical Recycled Content

20%
10%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

210 kN·m/kg
109 kN·m/kg

Specific Stiffness (E / density)

25.6 MN·m/kg
22.7 MN·m/kg

Modulus of Resilience

3,235 kJ/m³
722 kJ/m³

Thermal Diffusivity

2.7 mm²/s
6.7 mm²/s

Thermal Shock Resistance Index

6
9

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 IICP-Ti Powder for MIM

Manufacturing and finishing

CapabilityB817 Type IICP-Ti Powder for MIM
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

B817 Type II vs CP-Ti Powder for MIM — frequently asked

Is B817 Type II stronger than CP-Ti Powder for MIM?

Yes. B817 Type II has a typical yield strength of 855 MPa (124 ksi) against 380 MPa (55.1 ksi) for CP-Ti Powder for MIM — about 125% more. Tensile strength is 930 MPa (135 ksi) vs 480 MPa (69.6 ksi).

Which is cheaper, B817 Type II or CP-Ti Powder for MIM?

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, B817 Type II or CP-Ti Powder for MIM?

CP-Ti Powder for MIM, by a small margin. Both rate poor for machinability — 25/100 against 20/100 for B817 Type II; for welding the order is B817 Type II first (good, 60/100) then CP-Ti Powder for MIM (good, 55/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in B817 Type II and CP-Ti Powder for MIM 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.