Incoloy 825 Round bar Manufacturer and exporter
As a trusted supplier of ASTM B425 N08825 round bars. We manufacture and export premium-quality Alloy 825 (UNS N08825) bars and rods for use in extreme corrosion and high-temperature environments.
What is ASTM B425 N08825?
ASTM B425 is the standard specification for Nickel-Iron-Chromium-Molybdenum-Copper alloy bars, rods, and wires, primarily covering Alloy 825, designated as UNS N08825.
Incoloy 825 / Alloy 825 / UNS N08825/ W.Nr. 2.4858 is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium.
The nickel content is sufficient for resistance to chloride-ion stress-corrosion cracking. The nickel, in conjunction with the molybdenum and copper, also gives outstanding resistance to reducing environments such as those containing sulfuric and phosphoric acids.
The molybdenum also aids resistance to pitting and crevice corrosion. The alloy’s chromium content confers resistance to a variety of oxidizing substances such as nitric acid, nitrates and oxidizing salt.
The titanium addition serves, with an appropriate heat treatment, to stabilize the alloy against sensitization to intergranular corrosion.
The resistance of INCOLOY alloy 825 to general and localized corrosion under diverse conditions gives the alloy broad usefulness. Applications include chemical processing, pollution control, oil and gas recovery, acid production, pickling operations, nuclear fuel reprocessing, and handling of radioactive wastes.
Our N08825 round bar produce according to ASTM B425
ASTM B425-19 Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloys Rod and Bar
This specification covers nickel-iron-chromiummolybdenum-copper alloy (UNS N08825 and UNS N08221) in the form of hot-finished and cold-drawn rounds, squares, hexagons, and rectangles.
Chemical Composition of UNS N08825,according to ASTM B425 standard.
| Element | % |
| Nickel | 38.0-46.0 |
| Chromium | 19.5-23.5 |
| Molybdenum | 2.5-3.5 |
| Copper | 1.5-3.0 |
| Titanium | 0.6-1.2 |
| Iron | 22.0 min (~33%) |
| Carbon | 0.05 max |
| Manganese | 1.0 max |
| Sulphur | 0.03 max |
| Silicon | 0.5 max |
| Aluminium | 0.2 max |
UNS N08825 Mechanical Property As per SB425 Standard
Physical property
Density, lb/in3
……………………………………………………………0.294
Mg/m3 …………………………………………………………..8.14
Melting Range, °F ……………………………………………..2500-2550
°C ……………………………………………..1370-1400
Specific Heat, Btu/lb•°F …………………………………………….0.105
J/kg•°C …………………………………………………440
Curie Temperature, °F……………………………………………….<-320
°C ………………………………………………<-196
Permeability at 200 oersted (15.9 kA/m)………………………1.005
Why Incoloy 825?
INCOLOY alloy 825 has good impact strength at room temperature and retains its strength at cryogenic temperatures.
Incoloy 825 offers excellent resistance to:
- Sulfuric acid and phosphoric acid.
- Stress-corrosion cracking and pitting.
- Reducing acids and chloride environments.
- Oxidizing media and corrosive gases.
UNS N08825 Round Bar Specifications:
- Material Name: Incoloy® 825 / Alloy 825
- UNS Number: N08825
- Standard Specifications: ASTM B425, ASME SB425
- Available Sizes: Diameter 6 mm – 300 mm (or custom)
- Length: 1 meter to 6 meters, or custom-cut
- Finish: Black, bright, peeled, or centerless ground
- Form: Round Bar, Hex Bar, Square Bar, Forged Bar
Quality Assurance & Certification
- ASTM B425 / ASME SB425 compliant
- MTC EN 10204 3.1 / 3.2 available
- Ultrasonic tested / PMI / NDT / Third-party inspection
Other N08825 Materials are also Available
N08825 Pipe and Tube ASTM B 163, ASTM B 423
Why Choose Us?
- stock of ASTM B425 N08825 round bars
- Mill test certificate (EN 10204 3.1 / 3.2) provided
- Custom cut lengths and export packaging
As a leading manufacturer and stockist of ASTM B425 UNS N08825 bars, we offer:
- Competitive pricing
- Quick delivery
