Grade 4 (Commercially Pure (High Strength)) — Properties, Specifications & Supply

Density

4.51 g/cm3

Melting Point

1660 °C

Tensile Strength

550–680 MPa

Yield Strength

483–620 MPa

Elastic Modulus

104 GPa

UNS Number

R50700

Chemical Composition

Ti	Fe	O	C	N	H
Balance	≤ 0.5	≤ 0.4	≤ 0.08	≤ 0.05	≤ 0.015

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

Mechanical Properties

Property	Value	Unit
Ultimate Tensile Strength	550 – 680	MPa
Yield Strength (0.2% Offset)	483 – 620	MPa
Elongation at Break	≥ 15	%
Hardness	265	HB
Elastic Modulus	104	GPa
Density	4.51	g/cm³
Melting Point	1660	°C

International Grade Equivalents

Standard	Designation
ASTM (USA)	Grade 4
GB/T (China)	TA4
DIN/EN (Germany/EU)	3.7065
GOST (Russia)	ВТ1-2
JIS (Japan)	TP550
UNS (Unified)	R50700

Applicable Specifications

ASTM B265 ASTM B348 AMS 4901

Available Product Forms in Grade 4

Grade 4 is available in 2 product forms. Click any product to view specifications, stock inventory, and pricing.

Titanium Rods & Bars

Dia: 3mm – 350mm

ASTM B348 GJB ASME

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Titanium Sheets & Plates

Sheet: 0.5mm – 5.99mm | Plate: 6.0mm – 100mm

ASTM B265 GJB ASME

In Stock

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Request a Quote for Grade 4

We supply Grade 4 (Commercially Pure (High Strength)) 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 is Grade 4 titanium?

Grade 4 (UNS R50700) is the strongest commercially pure titanium, with 550 MPa minimum tensile strength. It's used where higher strength is needed without the cost of alloyed titanium — common in dental implants, surgical instruments, and marine fasteners.

What is the difference between Grade 4 and Grade 5 titanium?

Grade 4 is commercially pure (CP) with 550 MPa tensile. Grade 5 (Ti-6Al-4V) is an alpha-beta alloy with 895 MPa tensile — 63% stronger. Grade 5 also handles higher temperatures (up to 400°C). Choose Grade 4 when you need moderate strength with better formability and weldability than Grade 5.

Other Titanium Grades

Grade 1

Commercially Pure

240–345 MPa

Grade 2

Commercially Pure

345–450 MPa

Grade 5

α+β Alloy (Ti-6Al-4V)

895–1000 MPa

Grade 7

CP + Pd (Enhanced Corrosion Resistance)

345–450 MPa

Grade 9

Near-α Alloy (Ti-3Al-2.5V)

620–750 MPa

Grade 12

Near-α (Ti-0.3Mo-0.8Ni)

483–620 MPa

Grade 23

α+β ELI (Ti-6Al-4V ELI)

828–965 MPa