Tantalum Ta-10W (UNS R05255) MTC Certificate Sample – Download Free PDF

Tantalum Ta-10W (UNS R05255) Sample MTC

Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for Tantalum Ta-10W (ASTM B365 UNS R05255). Inspect the exact documentation your QA and engineering teams will receive with every maximum-strength, extreme corrosion-resistant fastener order from Ananka Fasteners.

ISO 9001-2015 EN 10204 3.1 ASTM B365 UNS R05255

What's Inside This Tantalum Ta-10W MTC Certificate

This sample mill test certificate mirrors the rigorous QA documentation package standard for our highest-strength Tantalum-Tungsten alloy fasteners, utilized where unparalleled acid resistance must be paired with extreme mechanical stiffness and high-temperature stability.

Full Traceability: Certified with TC No.: S74/26-XX and corresponding ASTM B365 specifications for tantalum alloy rod and wire.
Maximum Tungsten Alloying: Detailed breakdowns verifying the heavy 10% nominal Tungsten (W) addition (9.0% - 11.0%). This specific metallurgy creates the strongest commercially available Tantalum alloy.
Trace Gas Controls: Explicit verification of tightly controlled interstitial elements like Oxygen (O), Nitrogen (N), and Hydrogen (H) to prevent high-temperature embrittlement during processing.
Mechanical Properties (Annealed): Comprehensive reporting of Tensile Strength (515.50 MPa), Yield Strength (385.20 MPa), Elongation (18.50%), and Hardness (95 HRB). Yield strength is nearly double that of pure Tantalum.
Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.

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Note: This is a representative sample. Actual MTCs are issued per-heat with unique test values for every production lot to ensure strict specification conformance.

Live Preview: Tantalum Ta-10W (Annealed) MTC Data

Review the standard parameters and layout before downloading the full document.

TC Number

S74/26-XX

TC Date

08.07.20XX

Material Spec

ASTM B365 UNS R05255 Annealed

Bar Shape / Size

Hex Bar / 16 mm

Dimensions / Item

Heavy Hex Bolt M16 x 60 mm

Quantity

10.00 NOS

Chemical Composition %

W	Nb	O	C	N	Fe	H	Ta
10.15	0.035	0.009	0.005	0.004	0.003	0.0006	Rem
9.00 - 11.00	Max: 0.10	Max: 0.015	Max: 0.010	Max: 0.010	Max: 0.010	Max: 0.0015	Rem

Mechanical Properties

TENSILE STRENGTH (Mpa)	YIELD STRENGTH 0.2% Offset (Mpa)	% ELONGATION (GL-50mm)	HARDNESS (HRB)
515.50	385.20	18.50	95
Min: 485	Min: 345	Min: 10	Max: 105

Download Full Report (PDF)

View Our Datasheet: View Tantalum Ta-10W Datasheet →

Standard References & Compliance

Our MTC certificates map to the demanding industrial standards for specialty alloy fasteners. The test reports confirm compliance with As Per ASME/ASTM B365 UNS R05255 with respect to the tests carried out.

Standard / Requirement	Confirmation on Certificate
Visual Inspection	100% visual inspection carried out & found free from defects.
Safety Requirements	Material is free from radioactive contamination.
Weld Repairs	No weld repair Perform.
Dimensional Accuracy	All Dimensions are as per PO Specification.

Certification Details

We confirm that above mentioned Items was Manufactured, Sampled, Tested and Inspected in accordance with the subjected Customer's Purchase Order and as applicable Drawings, Material Specifications, Codes & Standards and the results of the items have been determined to meet the users' requirements.

Documentation Standard

✓ EN 10204-2004: 3.1 Standard
✓ Free from radioactive contamination
✓ Certified ISO 9001: 2015 Company

Alloying & Heat Treatment

✓ Heavy 10% Tungsten Addition (Highest Strength)
✓ Vacuum Annealed Condition for Machinability

Testing Conditions

✓ Chemical, Mechanical & hardness test carried at room temperature 25°C
✓ Interstitial Gas Analysis Performed

Technical FAQs — Tantalum Ta-10W MTC Certificate

Why specify Ta-10W over pure Tantalum (R05200)?

Ta-10W (UNS R05255) includes a 10% Tungsten addition, which nearly doubles the yield strength and significantly increases the tensile strength compared to pure unalloyed Tantalum. It is specified when components must operate in extremely corrosive environments but are also subjected to high mechanical stress, pressure, or elevated temperatures that pure Tantalum cannot withstand structurally.

Does the 10% Tungsten addition affect corrosion resistance?

Virtually not at all. Ta-10W retains the identical "glass-like" corrosion resistance to hot, concentrated acids (like hydrochloric, nitric, and sulfuric) as pure Tantalum, while offering vastly superior mechanical properties.

Are the materials free from radioactive contamination?

Yes, the document strictly states that the material is free from radioactive contamination and undergoes a 100% visual inspection to ensure it is free from defects.