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
: X 1 NiCrMoCu 31-27-4
Status according to EN 10 204 3.1
Chemical composition (nominal) %
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.
Unground, spot ground or fully ground condition.
Peel turned or black condition.
|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.
|75 - 200 (5 mm interval)||+/-1||max 10|
|>200 - 450||+/-3||3 - 8|
|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|
Seamless tube and pipe
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|
|Proof strength||Tensile strength||Elong.||Hardness|
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.
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).