Niobium-Zirconium (UNS R04261) Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for Niobium-1% Zirconium Alloy (ASTM B392 UNS R04261). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This Niobium-Zirconium MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for high-performance, refractory Nb-1Zr alloy orders shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S67/26-27 and corresponding ASTM specifications for Type 2 Niobium alloys.
- Alloyed Chemistry: Detailed breakdowns verifying the critical addition of ~1.00% Zirconium (Zr), which dramatically increases the high-temperature strength and creep resistance over commercially pure niobium.
- Heat Treatment Verification: Verified Fully Annealed in a high-vacuum environment to prevent oxidation, retaining excellent ductility.
- Mechanical Properties: Comprehensive reporting of Tensile Strength (285.50 MPa), Yield Strength (185.20 MPa), Elongation (28.50%), and Hardness (115, 118, 116 HV).
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: Niobium-Zirconium (Nb-1Zr) MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S67/26-27
TC Date
01.07.2026
Material Spec
ASTM B392 UNS R04261 Type 2
Bar Shape / Size
Round Bar / 16 mm
Dimensions / Item
Hex Head Bolt M16-2P x 80 mm
Quantity
10.00 NOS
Chemical Composition %
| Zr | C | N | O | H | Ta | Fe | Si | W | Mo | Ti | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.05 | 0.004 | 0.003 | 0.012 | 0.0010 | 0.04 | 0.005 | 0.005 | 0.01 | 0.01 | 0.01 | Rem |
| Min: 0.80 Max: 1.20 |
Max: 0.010 | Max: 0.010 | Max: 0.015 | Max: 0.0015 | Max: 0.10 | Max: 0.005 | Max: 0.005 | Max: 0.05 | Max: 0.02 | Max: 0.02 | Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HV) |
|---|---|---|---|
| 285.50 | 185.20 | 28.50 | 115, 118, 116 |
| Min: 195 | Min: 125 | Min: 20 | Max: 135 |
Standard References & Compliance
Our MTC certificates map to the demanding industrial standards for refractory alloy fasteners. The test reports confirm compliance with As Per ASME/ASTM B392 UNS R04261 Type 2 EDT. 2023 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
Heat Treatments
- Fully Annealed (Recrystallized)
- Vacuum Heat Treatment to prevent Oxidation
Testing Conditions
- Chemical, Mechanical & hardness test carried at room temperature 25°C
- 100% visual inspection carried out
Technical FAQs — Niobium-Zirconium (Nb-1Zr) MTC Certificate
Why is Zirconium (Zr) added to Niobium in this specification?
UNS R04261 (often referred to as Nb-1Zr) includes approximately 1% Zirconium. As verified in the chemical composition section, this relatively small addition significantly improves the alloy's strength and resistance to creep at high temperatures (particularly above 1000°C) without compromising its excellent ductility or fabrication characteristics, making it ideal for nuclear reactors and aerospace applications.
What heat treatment methodology is tracked on this certificate?
Niobium and its alloys are highly reactive to oxygen, nitrogen, and hydrogen at elevated temperatures. Therefore, the MTC tracks a full Annealing process that must be done in a high vacuum environment to maintain the metal's purity, prevent embrittlement, and guarantee its highly ductile 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.