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Titanium SP-700 vs Ti-6Al-6V-2Sn

Titanium · grade comparison

Titanium SP-700 and Ti-6Al-6V-2Sn are both titanium grades. Ti-6Al-6V-2Sn is the stronger of the two: yield strength 980 MPa (142 ksi) against 860 MPa (125 ksi) for SP-700, about 14% more; tensile strength follows at 1,050 MPa (152 ksi) vs 930 MPa (135 ksi). In exchange, SP-700 is the more ductile: elongation 17% versus 14% for Ti-6Al-6V-2Sn, and Ti-6Al-6V-2Sn is harder (340 HB vs 300 HB). SP-700 runs hotter in service (350°C vs 315°C continuous). On the shop floor, SP-700 welds better (good vs fair).

SP-700Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

Ti-6Al-6V-2SnChoose it when strength drives the design.

SP-700 vs Ti-6Al-6V-2Sn: properties

SP-700Ti-6Al-6V-2Sn

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

112 GPa16.2 Msi
110 GPa16 Msi

Shear Modulus

43 GPa6.2 Msi
42.5 GPa6.2 Msi

Bulk Modulus

110 GPa16 Msi
105 GPa15.2 Msi

Tensile Strength (Ultimate)

930 MPa135 ksi
1,050 MPa152 ksi

Yield Strength (0.2% offset)

860 MPa125 ksi
980 MPa142 ksi

Elongation at Break

17%
14%

Reduction in Area

40%
30%

Compressive Strength

900 MPa131 ksi
1,010 MPa146 ksi

Shear Strength

580 MPa84.1 ksi
690 MPa100 ksi

Fatigue Strength (Endurance Limit)

520 MPa75.4 ksi
550 MPa79.8 ksi

Fracture Toughness (K_IC)

65 MPa·√m59.2 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

22 J16.2 ft·lbf
19 J14 ft·lbf

Hardness, Brinell

300 HB
340 HB

Hardness, Rockwell C

32 HRC
36 HRC

Hardness, Vickers

310 HV
355 HV

Same in both: Poisson's Ratio 0.32

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,590°C2,894 °F
1,690°C3,074 °F

Liquidus Temperature

1,650°C3,002 °F
1,705°C3,101 °F

Same in both: Density 4.54 g/cm³0.16 lb/in³

Thermal

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

Thermal Conductivity

7 W/m·K4 BTU/hr·ft·°F
6.6 W/m·K3.8 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

9.4 µm/m·K5.2 µin/in·°F
9.1 µm/m·K5.1 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

350°C662 °F
315°C599 °F

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

Electrical

Conductivity and insulation.

Electrical Conductivity

1 % IACS
1.1 % IACS

Electrical Resistivity

1.7×10⁻⁶ Ω·m66.9 µΩ·in
1.57×10⁻⁶ Ω·m61.8 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

88 / 100
82 / 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
17 / 100

Weldability

65 / 100
35 / 100

Formability (cold)

45 / 100
20 / 100

Polishability

70 / 100
65 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Castability 30 / 100 · Brazeability / Solderability 45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

650 MJ/kg279,450 BTU/lb
690 MJ/kg296,647 BTU/lb

Embodied Carbon (primary production)

42 kg CO₂/kg
45 kg CO₂/kg

Typical Recycled Content

25%
30%

Same in both: Embodied Water 900 L/kg108 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

205 kN·m/kg
231 kN·m/kg

Specific Stiffness (E / density)

24.7 MN·m/kg
24.2 MN·m/kg

Modulus of Resilience

3,302 kJ/m³
4,365 kJ/m³

Thermal Diffusivity

2.9 mm²/s
2.7 mm²/s

Thermal Shock Resistance Index

6
7

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 scaleTi-6Al-6V-2SnSP-700

Manufacturing and finishing

CapabilitySP-700Ti-6Al-6V-2Sn
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Plasma Spray.

SP-700 vs Ti-6Al-6V-2Sn — frequently asked

Is Ti-6Al-6V-2Sn stronger than SP-700?

Yes. Ti-6Al-6V-2Sn has a typical yield strength of 980 MPa (142 ksi) against 860 MPa (125 ksi) for SP-700 — about 14% more. Tensile strength is 1,050 MPa (152 ksi) vs 930 MPa (135 ksi).

Which is cheaper, SP-700 or Ti-6Al-6V-2Sn?

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, SP-700 or Ti-6Al-6V-2Sn?

SP-700. Its weldability rates good (65/100) against fair (35/100) for Ti-6Al-6V-2Sn.

Ready to make it?

Upload a CAD file and FabDigit prices the part in SP-700 and Ti-6Al-6V-2Sn 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.