Common Questions on Titanium Alloy Chemical Compositions
Q: What are the main chemical ingredients of TC4 (GR5) titanium alloy?
A: According to the GB/T 3620.1-2007 standard, TC4 (GR5) titanium alloy consists of 5.5–6.75% Aluminum (Al) and 3.5–4.5% Vanadium (V), with titanium (Ti) as the remainder.
For the TC4ELI version, the aluminum content is slightly tighter at 5.5–6.5% and vanadium at 3.5–4.4%.
Q: How does the impurity control differ between TA1ELI and TA1 industrial pure titanium?
A: TA1ELI (Extra Low Interstitials) has much stricter impurity limits than standard TA1. For instance, the maximum Iron (Fe) content for TA1ELI is 0.10% and Oxygen (O) is 0.10%,
whereas standard TA1 allows up to 0.20% Iron and 0.18% Oxygen.
Q: What is the unique composition of TA9 (GR7) and TA9-1 (GR11) alloys?
A: These alloys are characterized by the addition of Palladium (Pd) to improve corrosion resistance. TA9 (GR7) contains 0.12–0.25% Palladium, while TA9-1 (GR11) contains 0.12–0.26% Palladium.
Both maintain high titanium purity with standard interstitial impurity controls.
Q: Which titanium alloy grade includes Molybdenum (Mo) and Nickel (Ni) in its composition?
A: TA10 (GR12) titanium alloy specifically includes 0.2–0.4% Molybdenum (Mo) and 0.6–0.9% Nickel (Ni). This specific combination enhances the alloy's strength and resistance to crevice corrosion
in high-temperature environments.
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