Titanium Grade 7H (UNS R52400) Supplier | Bar, Tube, Plate - Hangbo Alloy

Titanium Grade 7H (UNS R52400) is a palladium-stabilized commercially pure titanium grade containing a nominal 0.15% palladium, which provides the highest corrosion resistance of any unalloyed titanium grade. The "H" designation identifies the higher-interstitial version of the Grade 7 family, offering increased mechanical strength while retaining the exceptional resistance to reducing acids and crevice corrosion that palladium imparts. Plate, sheet and strip are supplied to ASTM B265 (Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate).

Overview

With a palladium content of 0.12–0.25%, Grade 7H resists attack in hot reducing acids, wet chlorine, chloride salt solutions and seawater even under crevice conditions where conventional CP titanium is prone to localized corrosion and hydrogen embrittlement. The palladium addition ennobles the alloy, dramatically widening its passivation range and extending service life in aggressive chemical environments. Grade 7H combines this corrosion performance with excellent fabricability, weldability and formability, and the higher-interstitial composition delivers greater strength than standard Grade 7 for structural chemical equipment.

Chemical Composition (ASTM B265)

Mechanical Properties

Applications

Titanium Grade 7H is specified for severe corrosive chemical environments, including chlor-alkali production, wet chlorine and hypochlorite service, brine heating systems, hydrochloric acid handling and seawater heat exchangers. It is also used in chemical plant reactors, vessels, piping and valve components where maximum corrosion resistance combined with higher strength is required, as well as in flue gas desulfurization and marine process equipment.

Shanghai Hangbo Alloy Group supplies Titanium Grade 7H (UNS R52400) in bar, tube and plate forms with full ASTM B265 certification.