At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM B550/B550M. Standard specification for reactor-grade and industrial-grade zirconium and zirconium alloy bar and wire, used to machine corrosion-resistant fasteners (bolts, studs, nuts) for chemical-process, acid and nuclear service.
Standard specification for reactor-grade and industrial-grade zirconium and zirconium alloy bar and wire, used to machine corrosion-resistant fasteners (bolts, studs, nuts) for chemical-process, acid and nuclear service.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Grade R60702 | UNS R60702 | Unalloyed (industrial) zirconium, Zr+Hf >= 99.2% |
| Grade R60704 | UNS R60704 | Zirconium-tin alloy (1.0-2.0 Sn) |
| Grade R60705 | UNS R60705 | Zirconium-niobium alloy (2.0-3.0 Nb) |
| Grade R60706 | UNS R60706 | Zr-Nb alloy, lower Nb, higher ductility |
Minimum mechanical requirements per ASTM B550/B550M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| R60702 (annealed) | 55 ksi (380 MPa) | 30 ksi (205 MPa) | 16 | N/A |
| R60704 (annealed) | 60 ksi (415 MPa) | 35 ksi (240 MPa) | 14 | N/A |
| R60705 (annealed) | 80 ksi (550 MPa) | 55 ksi (380 MPa) | 16 | N/A |
| R60706 (annealed) | 74 ksi (510 MPa) | 50 ksi (345 MPa) | 20 | N/A |
| Grade | Key Composition, % |
|---|---|
| R60702 | Zr+Hf >=99.2, Hf <=4.5, Fe+Cr <=0.2, O <=0.16 |
| R60704 | Zr+Hf >=97.5, Sn 1.0-2.0, Fe+Cr 0.2-0.4, Hf <=4.5 |
| R60705 | Zr+Hf >=95.5, Nb 2.0-3.0, Hf <=4.5, O <=0.18 |
| R60706 | Zr+Hf >=95.5, Nb 2.0-3.0, Fe+Cr <=0.2 |
ASME SB-550; UNS R60702/R60704/R60705/R60706; Zircadyne 702/704/705; DIN/WNr for Zr grades
For the official ASTM International standards catalogue, see the ASTM International standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We supply ASTM B550/B550M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
Standard specification for reactor-grade and industrial-grade zirconium and zirconium alloy bar and wire, used to machine corrosion-resistant fasteners (bolts, studs, nuts) for chemical-process, acid and nuclear service.
Ananka Fasteners supplies Grade R60702, Grade R60704, Grade R60705, Grade R60706 to ASTM B550/B550M. See the Grades / Classes Covered table above for full details of each grade.
Minimum tensile strength, yield strength, elongation and hardness requirements vary by grade — see the Mechanical Properties table above for the complete breakdown.
We supply ASTM B550/B550M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
Yes. For a quotation, provide the required fastener type, grade, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need a fastener released to ASTM B550/B550M for an industrial project? Send the required fastener type, grade, size, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: ASTM B550/B550M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM B550/B550M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
