Sanicro® 28 is a multi-purpose austenitic stainless ELC alloy for service in highly corrosive conditions. It is characterized by:
- Very high corrosion resistance in strong acids
- Very good resistance to stress and intergranular corrosion in various environments
- Very high resistance to pitting and crevice corrosion
- Good weldability
Standards
- UNS: N08028
- EN Number: 1.4563
- EN Name: X 1 NiCrMoCu 31-27-4
- W.Nr.: 1.4563
- SS: 2584
Product standards
EN 10088-3
Certificates
Status according to EN 10 204 3.1
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
|---|---|---|---|---|---|---|---|---|
| ≤0.020 | ≤0.6 | ≤2.0 | ≤0.025 | ≤0.010 | 26.5 | 30.5 | 3.3 | 1.0 |
Forms of supply
Sizes and tolerances
Round-cornered square, as well as round billets, are produced in a wide range of sizes according to the following tables. Larger sizes offered on request.
Surface conditions
Square billets
Unground, spot ground or fully ground condition.
Round billets
Peel turned or black condition.
| Size mm |
Tolerance mm |
Length m |
|---|---|---|
| 80 | +/-2 | 4 - 6.3 |
| 100, 114, 126, 140, 150 | +/-3 | 4 - 6.3 |
| 160, 180, 195, 200 | +/-4 | 4 - 6.3 |
| >200 - 350 | +/-5 | 3 - 5.3 |
Sizes and tolerances apply to the rolled/forged condition.
| Size mm |
Tolerance mm |
Length m |
|---|---|---|
| 75 - 200 (5 mm interval) | +/-1 | max 10 |
| >200 - 450 | +/-3 | 3 - 8 |
| Size mm |
Tolerance mm |
Length m |
|---|---|---|
| 77 - 112 (5 mm interval) | +/-2 | max 10 |
| 124, 134 | +/-2 | max 10 |
| 127, 147, 157 | +/-2 | max 10 |
| 142, 152, 163 | +/-2 | max 10 |
| 168, 178, 188 | +/-2 | max 10 |
| 183, 193 | +/-2 | max 10 |
Other products
Seamless tube and pipe
Hollow bar
Mechanical properties
Sanicro® 28 conforms to the mechanical properties according to specification EN 10088-3.
Testing is performed on separately solution annealed and quenched test pieces.
At 20°C (68°F)
| Proof strength | Tensile strength | Elong. | HB |
|---|---|---|---|
| Rp0.2a) | Rm | Ab) | |
| MPa | MPa | % | |
| ≥220 | 500-750c) | ≥35 | ≤220 |
| Proof strength | Tensile strength | Elong. | Hardness |
|---|---|---|---|
| Rp0.2a) | Rm | Ab) | Rockwell C |
| ksi | ksi | % | |
| approx. | |||
| ≥32 | 72-108 | ≥35 | 14 |
1 MPa = 1 N/mm2
a) Rp0.2 corresponds to 0.2% offset yield strength.
b) Based on L0 = 5.65√S0 , where L0 is the original gauge length and S0 the original cross-sectional area.
Impact strength
Due to its austenitic microstructure, Sanicro® 28 has very good impact strength, both at room temperature and at cryogenic temperatures.
Tests on bar have demonstrated that the steel fulfils the requirements according to the European standards EN13445-2(UFPV-2)(min.60J(44ft-lb)at-270oC(-455oF))andEN10272(min.60J(44ft-lb)at-196oC.(-320oF).
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.