Nick Alloy 825 Bar Stock

​Product Overview

825 bar stock is a nickel-iron-chromium alloy enhanced with molybdenum and copper, designed for highly corrosive environments in chemical processing, oil & gas, and marine industries. Compliant with ​ASTM B425, ​ASME SB425, and ​NACE MR0175 standards, it excels in resisting sulfuric and phosphoric acids, chlorides, and oxidizing salts, making it ideal for heat exchangers, valves, and downhole equipment.

​Product Specifications

​Material & Composition

• ​Nickel (Ni): 38-46%
• ​Iron (Fe): 22% min
• ​Chromium (Cr): 19.5-23.5%
• ​Molybdenum (Mo): 2.5-3.5%
• ​Copper (Cu): 1.5-3.0%
• ​Standards: ASTM B425, ASME SB425, EN 10095

​Dimensions & Forms

• ​Diameter Range: Φ5mm to Φ250mm (Custom Sizes Available)
• ​Surface Finish: Hot-rolled, Cold-Drawn, Turned, or Polished (Ra≤1.6μm)
• ​Length: Cut-to-Size (1m-6m) or Random

​Mechanical Properties

• ​Tensile Strength: ≥586 MPa
• ​Yield Strength: ≥241 MPa
• ​Elongation: ≥30%
• ​Hardness: ≤90 HRB

Key Advantages

✅ ​Superior Corrosion Resistance: Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in sulfuric acid, seawater, and chlorides.
✅ ​High-Temperature Stability: Performs in temperatures up to ​540°C (1000°F) with excellent oxidation resistance.
✅ ​Fabrication-Friendly: Excellent weldability (AWS A5.14 ERNiCrMo-3) and machinability with standard tooling.
✅ ​Versatility: Suitable for both oxidizing and reducing environments.

​Applications

• ​Chemical Processing: Acid pickling tanks, reactor vessels, phosphoric acid evaporators
• ​Oil & Gas: Sour gas well components, subsea umbilicals, offshore platform fittings
• ​Pollution Control: Flue gas scrubbers, waste incineration systems
• ​Marine Engineering: Seawater piping, desalination plant components
• ​Nuclear Power: Fuel rod cladding, radioactive waste handling

​Certifications

• ISO 9001:2015, NACE MR0175/MR0103 (Sour Service)
• PMI (Positive Material Identification) Verified
• Full Traceability with Mill Test Certificates (MTC)

​Packaging & Logistics

• ​Rust-Proof Packaging: VCI film + wooden crates with edge protectors.
• ​Shipping: FOB/CIF/DAP terms; hazardous material certified for corrosive alloys.
• ​Lead Time: 20-30 days (standard), 40-50 days (custom sizes/heat treatment).

Why Partner With Us?

🔹 ​Specialized Alloy Manufacturer: State-of-the-art vacuum melting for ultra-low impurity levels.
🔹 ​Technical Support: Free corrosion resistance guides and welding procedure specifications (WPS).
🔹 ​Quality Assurance: 100% UT testing, chemical analysis, and dimensional checks.
🔹 ​Global Track Record: Trusted by Dow Chemical, BP, and ExxonMobil.