ASTM B348 / B348M Grade 28

Chemical Properties

Elements	Composition %
Nitrogen, max	0.03
Carbon, max	0.08
Hydrogen,B,C max	0.015
Iron, max	0.25
Oxygen, max	0.15
Aluminum	2.5 - 3.5
Vanadium	2.0 - 3.0
Ruthenium	0.08 - 0.14
Residuals,D,E,F max each	0.1
Residuals,D,E,F max total	0.4
TitaniumG	balance

Note B: Lower hydrogen may be obtained by negotiation with the manufacturer. Note C: Final product analysis. Note D: Need not be reported. Note E: A residual is an element present in a metal or an alloy in small quantities and is inherent to the manufacturing process but not added intentionally. In titanium these elements include aluminum, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium, palladium, yttrium, copper, silicon, cobalt, tantalum, nickel, boron, manganese, and tungsten. Note F: The purchaser may, in his written purchase order, request analysis for specific residual elements not listed in this specification.

Mechanical Properties

Grade	Tensile Stength, min		Yield Stength (0.2 % Offset) min or range		Elongation in 4D, min, %	Reduction of Area min, %
	ksi	Mpa	ksi	Mpa
28	90	620	70	483	15	25
28D					12	20

Note D: Properties for material in transformed-beta condition.