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B521 Grade R05252 | R05252 Material Datasheet

Material Standard Values

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Material Description

Material Number	Material Name	Material Number (single)	Standard	Scope	Standard Status	Country	Predecessor	VDA 231-106 classification
R05252 (ASTM B521 : 2022)	B521 Grade R05252	R05252	ASTM B521 : 2022	Supersedes ASTM B521 : 2019	Valid	USA	B521 Grade R05252	4.2	1)
1) Remark: Seamless and welded tantalum-tungsten alloy tubes with excellent corrosion resistance.

Chemical Composition

C [%]	Fe [%]	H [%]	Mo [%]	N [%]	Nb [%]	Ni [%]	O [%]	Si [%]	Ti [%]	W [%]	Remainder
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1) Source: blur
2) Remark: blur

Material Compliance

REACh	RoHS
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Mechanical Properties

Semi-finished Product	Nominal Size [mm]	Temperature [°C]	Tensile Strength [MPa]	Yield Strength (2.0% offset) [MPa]	Elongation A25 [%]	Elongation A50 [%]
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1) Source: blur

Cross Reference

Material Name	Country	Standard
TaW2,5	Germany	VdTÜV WB 507
R05252	USA	UNS	1)
Tantalum-tungsten	USA	ASTM B521-22
Tantal
1) Source: Worldwide Guide to Equivalent Nonferrous Metals and Alloys, ASM International, 2001

Producer/Supplier/Trade names

Tradename	Supplier
ATI Ta2.5W	ATI Flat Rolled Products GmbH, Remscheid
R05252	BIBUS METALS AG, Fehraltorf
TaW2.5	Haines & Maassen Metallhandelsgesellschaft mbH, Bonn
R05252	H.C. Starck Hermsdorf GmbH, Hermsdorf
R05252	SELFAN Fine + Metal GmbH, Köln
R05252	WHS Sondermetalle e.K., Grünsfeld