Sanicro 28
Sanicro 28 / Alloy 28 (UNS N08028)
Introduction
Sanicro 28 , also known as Alloy 28 (UNS N08028) , is a high-alloy austenitic stainless steel offering excellent corrosion resistance in aggressive chemical environments. Thanks to its composition rich in nickel, chromium, and molybdenum, Sanicro 28 effectively resists sulfuric and phosphoric acids, as well as chlorinated media.
Sanicro 28 / Alloy 28 is widely used in the chemical, petrochemical, offshore and marine industries in Tunisia, Algeria, Morocco and Libya .
At Emirerri Steel , we supply Sanicro 28 UNS N08028 products that comply with international standards.
Product Types: Sanicro 28 / Alloy 28
- Sanicro 28 / Alloy 28 (UNS N08028) Tubes and pipes
- Sanicro 28 / Alloy 28 (UNS N08028) Plates and sheets
- Sanicro 28 / Alloy 28 (UNS N08028) Round and hexagonal bars
- Sanicro 28 / Alloy 28 (UNS N08028) Flanges
- Sanicro 28 / Alloy 28 (UNS N08028) Pipe Fittings
- Sanicro 28 / Alloy 28 (UNS N08028) Reels and strips
Specifications
| Property | Details |
|---|---|
| Trade Name | Sanicro 28 / Alloy 28 |
| UNS | N08028 |
| IN | 1.4563 |
| ASTM | Alloy 28 |
| Kind | Austenitic stainless steel |
| Density | 8.0 g/cm³ |
| Melting point | 1350 – 1400°C |
| Finishing | BA, 2B, No. 1, Polished, Satin |
| Available forms | Tube, plate, bar, flange |
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N08028 |
| IN | 1.4563 |
| DIN | X1NiCrMoCu31-27-4 |
| ASTM | Alloy 28 |
| Trade Name | Sanicro 28 |
Available sizes and dimensions
| Product | Dimensions |
|---|---|
| Tubes | 1/8″ to 24″ |
| Plates | 0.5 mm to 100 mm |
| Bars | 3 mm to 500 mm |
| Brides | 1/2″ to 48″ |
| Length | Standard & custom-made |
Sanicro 28 / Alloy 28 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.02 max |
| Chrome (Cr) | 19.0 – 23.0 |
| Nickel (Ni) | 23.0 – 28.0 |
| Molybdenum (Mo) | 4.0 – 5.0 |
| Copper (Cu) | 1.0 – 2.0 |
| Manganese (Mn) | 2.0 max |
| Silicon (Si) | 1.0 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.035 max |
Sanicro 28 / Alloy 28 Mechanical Properties
| Property | Value |
|---|---|
| Tensile strength | 490 MPa min |
| Elastic limit | 220 MPa min |
| Elongation | 35% min |
| Hardness | 70-90 HRB |
Sanicro 28 / Alloy 28 Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Thermal conductivity | 11.5 W/mK |
| Electrical resistivity | 952 nΩ.m |
| Modulus of elasticity | 190 GPa |
| Coefficient of expansion | 15.8 µm/m°C |
Corrosion Resistance
The Sanicro 28 / Alloy 28 UNS N08028 offers excellent resistance:
- With sulfuric and phosphoric acids
- To pitting corrosion
- To intergranular corrosion
- In chlorinated environments
- To seawater and marine environments
This exceptional resistance makes Sanicro 28 an ideal choice for offshore and chemical industries in Tunisia, Algeria, Morocco and Libya.
Heat Resistance
Sanicro 28 retains its mechanical properties in high-temperature environments and exhibits good oxidation resistance.
Thermal treatment
The recommended heat treatment includes:
- Solution annealing: 1040°C to 1150°C
- Rapid water cooling
This process improves metallurgical stability and corrosion resistance.
904L Stainless Steel Welding
The Sanicro 28 has excellent capabilities:
- With cheese
- At the bend
- Cut to size
- In machining
- In industrial polishing
Manufacturing
The 904L stainless steel can be:
- Cut out
- Hanger
- Factory
- Cold-formed
- Polite
Its high nickel content improves its ductility and mechanical strength.
Applications:
- Chemical Industry
- Offshore and Marine Industry
- Oil and Gas Industry
- Water Treatment
- Pharmaceutical Industry