ASTM B348 / B348M Grade 26H

Chemical Properties

Elements	Composition %
Nitrogen, max	0.03
Carbon, max	0.08
Hydrogen,B,C max	0.015
Iron, max	0.30
Oxygen, max	0.25
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
26HB,C	58	400	40	275	20	30

Note B: Material is identical to the corresponding numeric grade (that is, Grade 2H = Grade 2) except for the higher guaranteed minimum UTS, and may always be certified as meeting the requirements of its corresponding numeric grade. Grade 2H, 7H, 16H, and 26H are intended primarily for pressure vessel use. Note C: The H grades were added in response to a user association request based on its study of over 5200 commercial Grade 2, 7, 16, and 26 test reports, where over 99 % met the 58 ksi minimum UTS.