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Grade 7 (CP + Pd (Enhanced Corrosion Resistance)) — Properties, Specifications & Supply

Density

4.51 g/cm3

Melting Point

1665 °C

Tensile Strength

345–450 MPa

Yield Strength

275–410 MPa

Elastic Modulus

103 GPa

UNS Number

R52400

Chemical Composition

Ti Pd Fe O C N H
Balance 0.12-0.25 ≤ 0.3 ≤ 0.25 ≤ 0.08 ≤ 0.03 ≤ 0.015

Values in wt%. Single values indicate maximum allowable content.

Mechanical Properties

Property Value Unit
Ultimate Tensile Strength 345 – 450 MPa
Yield Strength (0.2% Offset) 275 – 410 MPa
Elongation at Break ≥ 20 %
Hardness 200 HB
Elastic Modulus 103 GPa
Density 4.51 g/cm³
Melting Point 1665 °C

International Grade Equivalents

Standard Designation
ASTM (USA) Grade 7
GB/T (China) TA9
DIN/EN (Germany/EU) 3.7235
GOST (Russia)
JIS (Japan)
UNS (Unified) R52400

Applicable Specifications

ASTM B265 ASTM B348 ASTM B338

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We supply Grade 7 (CP + Pd (Enhanced Corrosion Resistance)) in sheets, plates, bars, tubes, forgings, and custom forms. Certified to ASTM B265 and other applicable standards.

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Frequently Asked Questions

What makes Grade 7 titanium different?
Grade 7 (UNS R52400) is CP titanium with 0.12–0.25% palladium added. This small palladium addition dramatically improves corrosion resistance in reducing acid environments (HCl, H₂SO₄) and crevice corrosion conditions. It's the premium choice for chemical processing equipment.
Why is Grade 7 titanium expensive?
Grade 7 bar stock costs $85–120/kg — 6–8× more than Grade 2. The cost comes from palladium content (palladium itself is ~$30,000/kg). However, the total lifecycle cost can be lower: Grade 7 equipment lasts 2–3× longer in aggressive chemical environments, reducing replacement and downtime costs.

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