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Inconel 625 Threaded Bars Overview
Aurum Overseas is a trusted ASTM B446 UNS N06625 Threaded Bars Supplier & Exporter, offering high-strength nickel fasteners to ASTM B446 and ASME SB446 standards. Our cold-rolled Inconel 625 & UNS N06625 Threaded Rods resist high shear forces and maintain pitch stability in subsea and aerospace bolting.
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Solid-solution strengthened with Molybdenum (8–10%) and Niobium (3.15–4.15%), these Inconel 625 & ASTM B446 UNS N06625 Threaded Bars reach 517 MPa yield strength without heat treatment. Additionally, Alloy 625 Threaded Bars resist chloride stress cracking, pitting, and crevice corrosion in marine and acid environments.
Engineered for offshore riser clamps, sour gas flanges, and naval exhausts, our all-thread studs ensure long-term joint integrity. Contact Aurum Overseas for quick factory quotes, custom sizing, and worldwide dispatch.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B446, ASME SB446, AMS 5666, DIN 17752, EN 10204 3.1 |
| UNS Designation | UNS N06625 (Inconel 625 / Alloy 625) |
| Thread Size Range | M6 to M100 (1/4" to 4.0" Nominal Diameter) |
| Thread Profiles | UNC, UNF, UNEF, Metric Coarse, Metric Fine, Acme Threads |
| Length Options | 1,000 mm, 2,000 mm, 3,000 mm, Custom Cut-to-Length All-Thread Studs |
| Thread Class / Fit | Class 2A / 3A (Imperial) & 6g / 6h (Metric Profile Tolerances) |
| HSN Code | 75089090 |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Grade | Standard | W.Nr. | UNS | JIS | EN |
|---|---|---|---|---|---|
| Inconel 625 | ASTM B446 | 2.4856 | N06625 | NCF 625 | NiCr22Mo9Nb |
Chemical Composition (%)
| Chemical Element | Inconel 625 (UNS N06625) |
|---|---|
| Nickel (Ni) | 58.00 min |
| Chromium (Cr) | 20.00 – 23.00 |
| Molybdenum (Mo) | 8.00 – 10.00 |
| Niobium + Tantalum (Nb + Ta) | 3.15 – 4.15 |
| Iron (Fe) | 5.00 max |
| Carbon (C) | 0.10 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Sulfur (S) | 0.015 max |
Mechanical & Physical Properties
| Property Parameter | Value |
|---|---|
| Density | 8.44 g/cm³ (0.305 lb/in³) |
| Melting Point | 1350 °C (2460 °F) |
| Tensile Strength (Min) | 930 MPa (135,000 Psi) |
| Yield Strength (0.2% Offset, Min) | 517 MPa (75,000 Psi) |
| Elongation (Min) | 42.5 % |
Key Advantages
High Solid-Solution Strength
Molybdenum and Niobium additions stiffen the nickel-chromium matrix, providing 517 MPa minimum yield strength without heat-treatment aging.
Pitting & Crevice Corrosion Immunity
High PREN rating protects thread roots against stagnant seawater attack and sour gas (H2S) environment cracking.
Heavy Thread Load Performance
Outstanding fatigue strength and thread shear resistance prevent galling and pitch deformation under heavy joint preloads.
Pre-Threaded Installation Flexibility
Full-length continuous threads allow quick field cutting to produce custom-length stud bolts with minimal waste.
Quality Testing & Inspection
Aurum Overseas subjects every order to strict quality control processes to ensure compliance with international fastener standards and client specifications:
- Chemical Heat Verification (PMI): Spectro / XRF material analysis verifying exact elemental chemistry against ASTM standards.
- Thread Pitch & Gage Inspection: Go/No-Go thread gage and optical comparator testing ensuring class 2A/3A and 6g pitch tolerances.
- Mechanical Property Certification: Factory batch verification of tensile, yield strength, and elongation supported by EN 10204 3.1 MTRs.
- Optional Third-Party Testing: Ultrasonic (UT), Dye Penetrant (DPI), or Proof Load testing provided upon client project request.
Global Export Markets
As an established Inconel 625 Threaded Bars Exporter, Aurum Overseas supplies fully certified ASTM B446 UNS N06625 threaded rods to global offshore, marine, aerospace, and chemical processing facilities:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Inconel 625 contains Molybdenum (8–10%) and Niobium (3.15–4.15%), which act as solid-solution strengtheners, increasing yield strength to 517 MPa compared to 310 MPa in Inconel 600.
The combination of high Nickel, Chromium, and Molybdenum provides near-total immunity to pitting, crevice corrosion, and chloride stress corrosion cracking in deep-sea salt water.
There is no physical or technical difference. "Threaded bar," "threaded rod," and "all-thread" refer to the same continuously threaded product used for flange bolting and anchoring.
We supply UNC, UNF, UNEF, Metric Coarse, Metric Fine, and Acme thread profiles in standard 1-meter to 3-meter lengths or pre-cut custom stud sizes.
Contact Aurum Overseas
Contact a dedicated Inconel 625 Threaded Bars Exporter and ASTM B446 UNS N06625 Threaded Bars Supplier for certified high-nickel alloy threaded rod inventory, custom length sawing, and prompt global shipping.