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Kısa bilgi

1983: China established its national military standard system.
1987: China’s first titanium-related national military standard, “Forged TC4 Titanium Alloy Billets for Aerospace Industry” (GJB 391-1987), was approved on August 28, 1987, and implemented in 1988.
Over the years, China has developed a relatively complete national military standard system for titanium and titanium alloy materials.
Şu anda, there are 34 items related to titanium and titanium alloys in the existing GJB standards, ile 4 national military standards for titanium and titanium alloy sheets.

Serial Number	Latest Version	Standard Name	Scope
1	GJB 944-1990	Titanium Alloy Plate for Submarine Use TA5-A	Applicable to the sheet materials used for equipment, devices, and systems on submarines.
2	GJB 2505A-2008	Specification for Titanium and Titanium Alloy Plate and Strip for Aerospace Application	Hot-rolled or cold-rolled titanium and titanium alloy thick plates, thin plates, and strips.
3	GJB 2921-1997	TC4 Titanium Alloy Plate for Superplastic Forming	TC4 titanium alloy plate for superplastic forming.
4	GJB 6471-2008	Specification for TB5 Titanium Alloy Plate for Aerospace Use	Aerospace TB5 titanium alloy plate with a thickness of 0.8mm-1.2mm.