Table of Contents
- Incoloy 825 Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of Incoloy 825 Round Bars
- Key Advantages of UNS N08825 Round Bars
- Key Applications of Incoloy 825 Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Incoloy 825 Round Bars Supplier & Exporter
For acid pickling tanks, chemical evaporators, and downhole oilfield hardware requiring exceptional resistance to reducing acids, Aurum Overseas provides precision round bars. As a premier Incoloy 825 Round Bars Supplier and Exporter, we manufacture titanium-stabilized nickel-iron-chromium-molybdenum-copper alloy bars engineered for harsh corrosive service.
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We supply UNS N08825 Round Bars conforming to ASTM B425, ASTM A276, ASTM A479, and Werkstoff 2.4858 standards across metric and imperial dimensions. Our inventory features precision Incoloy 825 Bright Bars for close-tolerance machining alongside heavy-section Incoloy 825 Forged Bars for structural pressure components, fully backed by EN 10204 3.1 MTR certifications.
We export these specialized acid-resistant alloy bars across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Technical Specifications
| Technical Parameter | Standard Specification |
|---|---|
| Material Grade | Incoloy 825 / Alloy 825 |
| UNS Designation | UNS N08825 |
| Werkstoff Number | 2.4858 |
| Manufacturing Standards | ASTM B425, ASTM A276, ASTM A479, ASME SB425, EN 10095, DIN 17752 |
| Diameter Capability | Imperial: 1/8" to 20" NB | Metric: 3 mm to 500 mm |
| Length Options | 3 Meters, 6 Meters, Random Lengths, Custom Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, k12, DIN 1013 / EN 10060 |
| Supply Conditions | Annealed, Solution Annealed, Cold Drawn, Centerless Ground, Hot Rolled, Forged |
Mechanical Properties & Chemical Composition
Equivalent Grades of Incoloy 825 Round Bars
| Standard | Werkstoff Nr. | UNS | JIS | EN |
|---|---|---|---|---|
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NiCr21Mo |
Chemical Composition of Incoloy Alloy 825 Bars
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.05 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 0.50 max |
| Sulfur (S) | 0.03 max |
| Copper (Cu) | 1.50 – 3.00 |
| Molybdenum (Mo) | 2.50 – 3.50 |
| Aluminum (Al) | 0.02 max |
| Titanium (Ti) | 0.06 – 1.20 |
| Chromium (Cr) | 19.50 – 23.50 |
| Nickel (Ni) | 38.00 – 46.00 |
| Iron (Fe) | 22.00 min |
Mechanical Properties of Nickel Alloy 825 Round Bars
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 586 MPa min | 85,000 psi min |
| Yield Strength (0.2% Offset) | 241 MPa min | 35,000 psi min |
| Elongation (%) | 30% min | 30% min |
| Density | 8.14 g/cm³ | 0.294 lb/in³ |
| Melting Point | 1370 – 1400°C | 2500 – 2550°F |
Types of Incoloy 825 Round Bars
Aurum Overseas supplies ASTM A276 Incoloy 825 Round Bars in precision bright and heavy forged conditions for extreme thermal processing and aggressive furnace atmospheres.
Incoloy 825 Bright Bars
Incoloy 825 Forged Bars
Key Advantages of UNS N08825 Round Bars
Sulfuric & Phosphoric Acid Resistance
Added copper (1.50–3.00%) works with molybdenum to give outstanding resistance to reducing chemicals and hot acid solutions.
Titanium Stabilization
Controlled titanium additions (0.06–1.20%) tie up carbon to prevent intergranular chromium carbide precipitation during welding.
Immunity to Stress Corrosion Cracking
Nickel levels between 38–46% safeguard components against chloride-induced stress corrosion cracking in hot water systems.
Pitting & Crevice Attack Protection
Combined chromium (19.5–23.5%) and molybdenum (2.5–3.5%) content resist localized pitting in high-chloride media.
High Chemical Processing Durability
Provides reliable structural performance in both oxidizing and reducing acid environments across varying temperatures.
Key Applications of Incoloy 825 Round Bars
| Industry Sector | Typical Components | Operating Conditions |
|---|---|---|
| Acid Chemical Plants | Pickling tank heating coils, acid pumps, mixing shafts, and agitators | Boiling sulfuric acid, phosphoric acid, and aggressive organic acid blends |
| Oil & Gas Production | Downhole sour gas equipment, wellhead components, and flowline valves | Acidic H₂S, high carbon dioxide levels, heavy chlorides, and high pressure |
| Nuclear Fuel Processing | Fuel dissolvers, acid recovery evaporators, and process piping bars | Nitric acid streams, radioactive waste streams, and moderate heat |
| Marine & Desalination | Marine propeller shafts, sea-water valve stems, and fast-flowing piping hardware | Stagnant and high-velocity seawater, marine biofouling, and pitting risk |
| Pollution Control | Flue gas desulfurization (FGD) scrubbers, dampers, and fans | Sulfur dioxide vapors, acidic condensation, and slurry abrasive environments |
Quality Testing & Inspection
As a leading Incoloy 825 Round Bars Exporter, Aurum Overseas subjects every shipment to strict quality verification:
- Positive Material Identification (PMI): Spectrometer testing verifies exact chemical element ratios (Ni 38–46%, Mo 2.5–3.5%, Cu 1.5–3.0%, Ti 0.06–1.20%).
- Ultrasonic Testing (UT): ASTM A388 testing checks heavy forged bars for internal voids, cracks, or flaws.
- Mechanical & Hardness Testing: Tensile strength, yield, elongation, and Rockwell/Brinell hardness verified per ASTM B425.
- Dimensional & Surface Checks: Precision tools inspect straightness, roundness, outer diameter tolerances, and surface roughness (Ra).
Global Export Markets
As an established Incoloy 825 Round Bars Exporter, Aurum Overseas supplies fully certified UNS N08825 Round Bars to global energy and thermal engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Incoloy 825 combines 1.50–3.00% copper with molybdenum and nickel, which significantly slows corrosion rates in reducing environments like sulfuric and phosphoric acids.
Incoloy 800 is engineered for high-temperature creep and oxidation resistance up to 1100°C, whereas Incoloy 825 includes molybdenum, copper, and titanium specifically for wet aqueous chemical and acid corrosion resistance up to 540°C.
We supply centerless ground Incoloy 825 Bright Bars for high-speed automated machining, alongside hot-rolled, rough-turned, and forged finishes for heavy structural applications.
All shipments are accompanied by EN 10204 3.1 Mill Test Reports detailing heat numbers, chemical composition, tensile/yield values, PMI verification, and UT inspection results.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Incoloy 825 Round Bars for high-specification global infrastructure projects.
Contact our technical sales team for engineering support, material test certificates, or direct RFQs: