Hastelloy C-276 Alloy N10276
Hastelloy C-276 is a nickel molybdenum chromium alloy with tungsten, designated UNS N10276. High molybdenum and chromium let it resist chloride ion attack, and the tungsten addition improves that further. It is one of…
What This Product Is For
Hastelloy C-276 is a nickel molybdenum chromium alloy with tungsten, designated UNS N10276. High molybdenum and chromium let it resist chloride ion attack, and the tungsten addition improves that further. It is one of the few materials that will take wet chlorine gas, hypochlorite and chlorine dioxide solution, which is why it appears in chemical process plant handling both oxidising and reducing media.
Key Benefits
- Works in both oxidising and reducing media, so one grade covers a mixed process line
- High molybdenum content makes the alloy particularly resistant to pitting and crevice attack
- Resists wet chlorine gas, hypochlorite and chlorine dioxide solution
- Stands up to high concentration chloride solutions such as ferric chloride and copper chloride
- Low carbon content minimises carbide precipitation, which protects welded joints
Who It Is For
- Pulp and paper engineers specifying bleach plant materials
- Chemical process fabricators building chloride service equipment
- Water treatment contractors handling hypochlorite
- Buyers replacing failed stainless components in chloride environments
Problems It Solves
- Rapid pitting and crevice attack on stainless steel in concentrated chloride solution
- Material failure when a line sees both oxidising and reducing conditions
- Carbide precipitation weakening welded joints in nickel alloy fabrications
- Equipment that cannot survive wet chlorine service
Application Scenarios
- Chlorine dioxide bleaching systems in pulp and paper plants
- Hypochlorite dosing and storage equipment
- Ferric chloride and copper chloride etching and pickling lines
- Chemical process equipment alternating between oxidising and reducing duty
Specifications
Every value below is taken from the published product data. Where a figure is not published it is left out rather than estimated.
| Grade | Hastelloy C-276, UNS N10276 |
|---|---|
| Alloy Family | Nickel molybdenum chromium alloy with tungsten |
| Key Resistance | Wet chlorine gas, hypochlorite, chlorine dioxide solution |
| Chloride Service | High concentration chloride solutions including ferric chloride and copper chloride |
| Carbon | Low carbon content to minimise carbide precipitation |
Technical Features
- Nickel molybdenum chromium alloy with tungsten
- Designation UNS N10276
- High molybdenum for pitting and crevice resistance
- Tungsten addition for further corrosion resistance
- Low carbon to limit carbide precipitation
Materials
- Nickel molybdenum chromium alloy with tungsten
Manufacturing Process
- Hot working
- Solution annealing
- Welding
- Machining
Quality Control
- Chemistry verified against the UNS N10276 composition
- Carbon level confirmed low to protect weldability
- Dimensional inspection on bar and tube before packing
- Surface examined for forging and drawing defects
Customisation Options
- Bar and tube sizes cut to your drawing
- Matched heat supply across bar and tube where the order allows
- Export packing to your specification
Use Guide
- Confirm the chloride concentration and whether the service is oxidising, reducing or both before selecting the grade
- Weld with a matching C-276 class consumable and keep heat input low
- Avoid iron contamination from carbon steel tooling during fabrication
- Pickle and passivate before returning the equipment to chlorine service
How It Compares With the Alternatives
| 316L stainless steel | C-276 handles wet chlorine and concentrated chloride solutions that pit 316L within weeks |
|---|---|
| Hastelloy G30 | G30 is aimed at commercial phosphoric acid and highly oxidising mixed acids, C-276 at wet chlorine and reducing chloride chemistry |
| Alloy 625 | Both are nickel chromium molybdenum grades, but C-276 carries more molybdenum and tungsten for severe chloride pitting duty |
Related Products
Nickel 200 Seamless Pipe
Nickel 200 seamless pipe is commercially pure wrought nickel supplied to ASTM B161 under UNS N02200. It is the standard choice for…
View specifications →
Nickel Alloy 625 Exhaust Tubing
Nickel alloy 625 exhaust tubing is cold worked seamless tube covered by ASTM B444 under UNS N06625, also carried as BS 3074 NA21…
View specifications →
SS316 Equal Angle Bar 75 x 75 x 6 mm x 6 m
This is a 316 stainless equal angle bar in 75 x 75 x 6 mm section at 6 m length, produced to JIS, AISI and ASTM chemical…
View specifications →
Monel Alloy K500
Monel Alloy K500 is a nickel copper superalloy with high strength and strong corrosion resistance in marine environments. It is…
View specifications →Hastelloy C-276 Alloy N10276 Questions
What is the UNS number for this grade
Can C-276 handle wet chlorine
Why is the molybdenum content important
Is the alloy suitable for welded equipment
Which product forms can you supply
Does it work in both oxidising and reducing media
Quote Hastelloy C-276 Alloy N10276
Send the size, wall or thickness, quantity and destination port. Certificates, packing and lead time are confirmed on the quotation.