Introducing Taashvi Special Alloys: A Source of Excellence
Alloy 28 (UNS N08028, W. Nr. 1.4563) is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localise attack such as pitting and crevice corrosion. The alloy are especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment.
In what forms is Alloy-28 Available at Taashvi Special Alloys?
- Sheet
- Plate
- Bar
- Pipe & Tube (welded & seamless)
- Flanges
- Fittings
- Forging
- Fasteners
- Elbows, tees, stub-ends, returns, caps, crosses, reducers, pipe nipples, etc.
- Welding Wire (AWS Classifications: ER320LR and E320LR-16)
Applications:
- Chemical processing
- Petrochemical Processing
- Downhole service (Deep Wells with Sour Gas)
- Ship Building
- Construction
Chemical Properties:
| Iron (%) | Chromium (%) | Nickel (%) | Manganese (%) | Molybdenum (%) | Others (%) |
|---|---|---|---|---|---|
| 20-40.4 | 26-28 | 30-34 | Max 2.5 | 3-4 | Remainder |
Mechanical Properties:
| Yield Strength | Tensile Strength | Break Elongation (Cold Worked) | Elasticity Modulus | Hardness (Rockwell B) | Hardness (Rockwell C) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metric | Imp | Metric | Imp | Metric | Imp | Metric | Imp | Metric | Imp | Metric | Imp |
| 214 MPa | 31 Ksi | 500 Mpa | 72.5 Ksi | 15 % | 50 % | 200 GPa | 29000 Ksi | 80-90 | 80-90 | 33 | 33 |
Physical Properties:
| Density | Specific Heat | Expansion Coefficient | Young’s Modulus | Thermal Conductivity | Electrical Resistivity | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lb/In3 | g/cm3 | Btu lb oF | J/kg oC | 21 to 427 oC | 103 Ksi | GPa | Btu in/ft2 hoF | W/m oC | Ohm circ mil/ft | Micro ohm m |
| 0.29 | 8.0 | 0.105 | 450 | 15.0-16.8 | 29.0 | 200 | 66 | 11.4 | 594 | 0.99 |
Coil / Sheet /Plate Specification
Dimensions : ASTM, ASME, AISI, DIN, BIS
Thickness : 0.50mm - 100mm
Size : 1000 mm x 2000mm, 1220mm x 2440mm, 4' x 8', 1250mm x 2500mm, 1500mm x 3000mm to 6000mm, 2000mm x 4000mm to 6000mm
Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Form : Shim Sheet, Perforated Sheet, Profile Cut,
Seamless & Welded Pipes & Tubes Specification
Specification : ASTM, ASME, DIN, NFA, JIS.
Thickness : 4.0mm - 100mm.
Pipe Size : 1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.
Tube Size : 1/2" OD to 8" OD.
Length : Cut length, Fix length, Single Random, Double Random & Required Length.
Form : Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pancake Coils, Hydraulic Tubes.
End : Plain End, Beveled End, Threaded End.
Type : Seamless & Welded Pipes & Tubes.
Round Bar Specification
Dimensions : ASTM, ASME,AISI, API.
Size : 5 mm to 500 mm
Length : from 2.00mm to 6.35mm (0.078" to 0.25") dia.
Finish : Bright, Black, Polish, Forged
Form : Round Bar, Square, Hexagon
Condition : Cold Drawn & Polished Cold Drawn, Centerless Ground Bars & Polished
Other Services : Machining (CNC), Centerless Grinding (CG), Heat Treatment, Annealing, Pickling, Polish, Rolling, Forging, Cutting, Bending, Minor Fabrication
Seamless & Welded Pipes & Tubes Fittings Specification
Specification : ASTM, ASME, DIN, NFA, JIS.
Size : 1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.
Form : Elbow, Tee, Reducer, Stub End, End Cap, Pipe Nipple, Weldolet,
End : Beveled End, Threaded. Plain End,
Type : Seamless & Welded Pipe & Tubes Fittings, Buttweld Fittings & Dairy Fittings.
