Titanium Alloys - Timetal 1100 Physical and Mechanical Properties and Fabrication

Background

This near-alpha alloy was developed primarily for elevated temperature applications in the range of 600°C (1112°F) or possibly slightly higher. In the beta-processed condition, Ti-1100 offers the highest combination of strength, creep resistance, fracture toughness and stability. It has approximately 38°C (100°F) advantage in terms of creep and stress rupture over beta-processed Ti-6242Si. After long exposure in the 500-650°C (932-1200°F) range, Ti-1100 demonstrates good bulk stability. Coatings may be required for prolonged use above 600°C (1112°F).

Two conditions are recommended:

•         Beta forged, which gives a balance of creep resistance, ductility and stability

•         Beta annealed which has slightly better creep resistance than the beta forged,  but somewhat lower ductility and tability.

Composition

Table 1. The composition of Timetal 1100.

Key Properties

Physical Properties

Table 2. Typical physical properties for Timetal 1100.

Mechanical Properties

Table 3. Typical mechanical properties for Timetal 1100.

Table 4. Mechanical properties for Timetal 1100 cast, hipped and annealed (625°C (1100°F), 8 hours).

Fabrication

•         Weldability – Good

•         Forging – Beta forge: 1065 - 1095°C (1950-2000°F), plus stabilise 8hrs at 595-705°C (1100-1300°F)

•         Annealing – Beta anneal: 1065-1095°C (1950-2000°F), plus stabilise 8hrs at 595-705°C (1100-1300°F)

•         Ageing - 593°C (1100°F), over 8hr

Source: The Titanium Information Group

For more information on this source please visit The Titanium Information Group