Table of Contents
- Incoloy 825 Square & Hex Bars Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of Incoloy 825 Bars: Hexagonal & Square Profiles
- Key Advantages of Incoloy 825 Square & Hex Bars
- Key Applications of Incoloy 825 Square & Hex Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Incoloy 825 Square & Hex Bars Overview
Incoloy 825 Bars are provided by Aurum Overseas, a leading global supplier and exporter. Our major products include UNS N08825 Square Bars and UNS N08825 Hexagonal Bars, characterized by high mechanical strength and exceptional acid corrosion resistance. As a top Incoloy 825 Square Bars and Hex Bars Supplier, all our stock is fully tested to comply with ASTM, ASME, and DIN standards.
We offer competitive prices on Alloy 825 Bars and Nickel Alloy 825 Bars without compromising quality. As a trusted Incoloy 825 Square Bars and Hex Bars Exporter, our inventory includes hot-rolled square stock and bright hex profiles engineered for precision CNC machining across custom sizes.
Our bars are used in chemical processing, oil and gas, pollution control, and marine engineering. Contact Aurum Overseas today for instant quotes and mill test certificates.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B425, ASME SB425, BS 3076 NA16, EN 10088-3 |
| UNS Designation | UNS N08825 |
| Across-Flats (AF) Size Range | 6.0 mm to 120.0 mm (1/4" to 4-1/2" Square & Hexagon Profiles) |
| Length Options | 1,000 mm to 6,000 mm, Custom Precision Cut-to-Length |
| Surface Finishes | Cold Drawn, Bright Annealed, Centerless Ground, Hot Rolled, Forged |
| Heat Treatment Condition | Stabilized Solution Annealed (940 °C to 980 °C, Water Quenched or Air Cooled) |
| Dimensional Tolerances | ASTM B425 / ISO 286-2 (h9, h10, h11 profile tolerances) |
| HSN Code | 75052200 |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard / Grade | Werkstoff Nr. | UNS Designation | JIS Standard | EN Standard |
|---|---|---|---|---|
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NiCr21Mo |
Chemical Composition (%)
| Element | Specification Range (UNS N08825) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Chromium (Cr) | 19.50 – 23.50 |
| Iron (Fe) | 22.00 min |
| Molybdenum (Mo) | 2.50 – 3.50 |
| Copper (Cu) | 1.50 – 3.00 |
| Titanium (Ti) | 0.60 – 1.20 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 0.50 max |
| Carbon (C) | 0.05 max |
| Aluminum (Al) | 0.20 max |
| Sulfur (S) | 0.03 max |
Mechanical & Physical Properties
| Property Parameter | Metric Units | Imperial Units |
|---|---|---|
| Density | 8.14 g/cm³ | 0.294 lb/in³ |
| Melting Point | 1400 °C | 2550 °F |
| Tensile Strength (Min) | 550 MPa | 80,000 Psi (80 ksi) |
| Yield Strength (0.2% Offset, Min) | 220 MPa | 32,000 Psi (32 ksi) |
| Elongation (Min) | 30 % | 30 % |
Types of Incoloy 825 Bars: Hexagonal & Square Profiles
Aurum Overseas supplies Incoloy 825 (UNS N08825) bars in precision hexagonal and square profiles for chemical processing and acid service.
Incoloy 825 Hex Bars
Incoloy 825 Square Bars
Key Advantages of Incoloy 825 Square & Hex Bars
Boiling Acid Protection
Enriched with 1.5–3.0% copper and molybdenum to eliminate wall thinning in aggressive sulfuric and phosphoric acid baths.
Weld-Ready Stabilization
Titanium addition (0.6–1.2%) binds carbon to block intergranular corrosion in welded heat-affected zones.
Chloride Crack Resistance
Provides complete immunity to stress corrosion cracking in high-chloride, marine, and brackish water environments.
Oxidizing Media Defense
High-performance surface passivation resists aggressive nitric acid streams, nitrates, and corrosive oxidizing salts.
Key Applications of Incoloy 825 Square & Hex Bars
| Industry | Applications | Operational Benefit |
|---|---|---|
| Oil & Gas Downhole | Subsea valve stems, sour gas hex fittings, wellhead parts | Prevents hydrogen embrittlement and sulfide stress cracking in high-H2S wells. |
| Chemical Processing | Heat exchanger tie rods, reboiler hex plugs, pump shafts | Delivers zero-maintenance service life in hot acid pickling environments. |
| Nuclear Reprocessing | Fuel element dissolvers, basket fasteners, square brackets | Withstands concentrated nitric acid streams in high-temperature radioactive processing. |
| Pollution Control | FGD scrubber fasteners, mist eliminator pins, hardware | Stops pitting and crevice attack under wet, acidic fly ash deposits. |
Quality Testing & Inspection
As a certified Incoloy 825 Square Bars Exporter and Incoloy 825 Hex Bars Exporter, Aurum Overseas conducts rigorous quality verification on every heat lot:
- Positive Material Identification (PMI): 100% XRF spectroscopic testing to verify exact 38–46% Ni, 19.5–23.5% Cr, 2.5–3.5% Mo, and 1.5–3.0% Cu composition.
- Corrosion Testing: Intergranular corrosion testing in accordance with ASTM A262 Practice C (Huey Test) and ASTM G28 Method A.
- Mechanical Validation: Tensile, yield, elongation, and hardness testing strictly per ASTM B425 requirements.
Global Export Markets
As an established Incoloy 825 Square & Hex Bar Exporter, Aurum Overseas supplies fully certified ASTM B425 UNS N08825 bars to global chemical processing, oil & gas, nuclear, and pollution control facilities:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Hex bars are optimized for rapid CNC machining of threaded fasteners, fittings, and valve components, whereas square bars are ideal for structural brackets, manifolds, and custom forging applications.
Yes. Incoloy 825 is titanium-stabilized to prevent carbide precipitation during welding, preserving full corrosion resistance in heat-affected zones without secondary heat treatment.
We stock cold-drawn bright bars for tight-tolerance machining (h9, h10) alongside hot-rolled and forged finishes for heavy-duty structural use.
Every shipment from Aurum Overseas includes full EN 10204 3.1 Mill Test Certificates covering heat chemistry, mechanical properties, and non-destructive ultrasonic testing.
Contact Aurum Overseas
Partner with a trusted Incoloy 825 Square Bars Supplier and global Incoloy 825 Hex Bars Exporter for certified alloy stock, custom cut-to-length sawing, and rapid international delivery.