811 Applications

Titanium alloy markets, and product requirements can be described by three major market segments—jet engines, airframes, and industrial applications (see Table 8.16) [2] and Fig. 8.20 [6, 7] [2]. The first two of these segments are related to the broad aerospace market, which in the United States, dominates the use of titanium and consumes about equal amounts in engines and airframes. These two applications are based primarily on titanium's high specific strength (strength-to-density ratio). The third, and smallest, market segment in the United

Inorganic salt solutions

Highly resistant to chlorides of calcium, copper, iron, ammonia, manganese, and nickel.

Highly resistant to bromide salts.

Highly resistant to sulfides, sulfates, carbonates, nitrates, chlorates, and hypochlorites.

Organic acids

Generally very resistant to acetic, terephthalic, adipic, citric, formic, lactic, stearic, tartaric, and tannic acids.

Organic chemicals

Corrosion-resistant in organic process streams of alcohols, aldehydes, esters, ketones, and hydrocarbons, with air or moisture.

Alkaline media

Low corrosion rates in hydroxides of sodium, potassium, calcium, magnesium, and ammonia.

TABLE 8.16 Titanium Alloys—Markets and Product Requirements

Market Segment

Market USA

Share Europe

Product Requirements

Jet engines

42%

37%

Elevated temp. tensile strength Creep strength Elevated temp. stability Fatigue strength Fracture toughness

Airframes

38%

33%

High tensile strength Fatigue strength Fracture toughness Fabricable

Industrial Total

1990 Consumption, kg x 106

100% 23.6

100% 9.1

Corrosion-resistant Adequate strength Fabricable Cost competitive

MT's in 000's 60

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