TB8 Ti-15Mo-3Al-2.7Nb-0.25Si - GB /T 42159-2022

Grade	TB8
Other Names
Corresponding Standard	GB /T 42159-2022 Titanium and Titanium Alloy Bars and Wire for Fastener
Classification	Titanium and Titanium Alloys
Properties	Corrosion Resistance
Density	4.89 g/cm³

TB8 Chemical Element Composition Content (%)

Component	Fe	C	Si	Mo	N	Nb	Al	H	O	Other Individual	Other Total	More
Minimum Value	-	-	0.15	14	-	2.4	2.5	-	-	-	-	Ti:Remainder
Maximum Value	0.4	0.05	0.25	16	0.05	3.2	3.5	0.015	0.17	0.1	0.4	Ti:Remainder

"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.

TB8 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
4~25	Solution treatment (ST)	≥800	Rp0.2: ≥760 Shear Strength: ≥570	≥13	≥50
4~25	Solution aging (STA)	≥1200	Rp0.2: ≥1050 Shear Strength: ≥720	≥8	≥20

TB8 Corresponding Standards(Same grade name, different standards)

1	GB /T 3621-2007
	TB8 Ti-15Mo-3Al-2.7Nb-0.25Si
2	GB /T 3620.1-2016
	TB8 Ti-15Mo-3Al-2.7Nb-0.25Si
3	GB /T 42159-2022
	TB8 Ti-15Mo-3Al-2.7Nb-0.25Si

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