Machining DataSheet for

Machining Material Ti-6-7

Material Ti-6-7 is a titanium alloy with a hardness of 32 HRC and a machinability rating of 20%.

Titanium alloys such as Ti-6-7 are used in mechanical components for two main reasons:

• It has an excellent strength-to-weight ratio. On the one hand, it is almost as light as aluminum, and on the other hand, it has a higher strength than most steel alloys.
• It has superb corrosion resistance.

The main challenges of machining Ti-6-7 are:

• Ti-6-7 has very low heat conductivity. It causes heat generating from the cut to transfer mainly to the cutting tool instead of flowing to the chips and workpiece.
• It has high flexibility, thus bending easily by the cutting forces.
• High hardness of 32 HRC leads to premature wear.

Tip for machining Ti-6-7:

• Use a positive cutting edge in medium/roughing operation, preferably gound with a small honing size.
• In finish operations, use only ground inserts/tools with sharp cutting edges and minimal honing size.
• On supper-finish applications, you can also use cutting tools that are designed for aluminum without honing.
• On small diameter parts, on a workpiece with thin walls, or poorly clamped workpiece, be gentle with your depth of cut and feed rate to reduce the cutting force.
• Use an insert/tool with a very hard substrate because Ti-6-7 has a hardness of 32 HRC

Summery:

Equivalent International Designations for Material Ti-6-7

Chemical Composition for Material Ti-6-7

Cutting Speeds Recomendations for Material Ti-6-7

* Click on the speeds below for higher precision in specific conditions!

Recommended Carbide Grades for Material Ti-6-7

• Turning
• Parting Off
• Grooving
• Milling Indexable

Grade for Turning

Grade for Parting Off

Grade for Grooving

Grade for Milling (Indexable)

Recommended Insert Cutting Edge Geometry for Material Ti-6-7

Learn more about carbide inserts Cutting-Edge Geometry Parameters.