Sanicro® 28 Bar

Standards

• UNS: N08028
• EN Number: 1.4563
• EN Name: X 1 NiCrMoCu 31-27-4
• W.Nr.: 1.4563

Standards

Product standard
EN 10088-3, EN 10272
Certificates
Status according to EN 10 204 3.1

Chemical composition (nominal)

Chemical composition (nominal) %

C	Si	Mn	P	S	Cr	Ni	Mo	Cu
≤0.020	≤0.6	≤2.0	≤0.025	≤0.010	27	31	3.5	1.0

Mechanical properties

Bar steel is tested in delivery condition.

The following figures apply to material in the solution annealed and quenched condition.

At 20°C (68°F)

1 MPa = 1 N/mm²
a) R_p0.2 corresponds to 0.2% offset yield strength.
b) Based on L₀ = 5.65√S₀ , where L₀ is the original gauge length and S₀the original cross-section area.
c) For sizes below 50 mm/2" R_m min. 800 MPa.

Impact strength

Due to its austenitic microstructure, Sanicro^® 28 has very good impact strength both at room temperature
and at cryogenic temperatures.

Tests have demonstrated that the steel fulfils the requirements according to the European standards prEN 13445-2 (UFPV-2)
(min.60J (44ft-lb) at-270^oC (-455 ^oF)) and EN10272 (min. 60J (44ft-lb)at-196^oC (-320^oF).

Welding

The weldability of Sanicro^® 28 is good. Suitable methods of fusion welding are manual metal-arc welding (MMA/SMAW) and gas-shielded arc welding, with the TIG/GTAW method as first choice.

For Sanicro^® 28, heat-input of <1.0 kJ/mm and interpass temperature of <150°C (300°F) are recommended. A string bead welding technique should be used.

Recommended filler metals

TIG/GTAW or MIG/GMAW welding

ISO 14343 S 27 31 4 Cu L/AWS A5.9 ER383 (e.g. Exaton 27.31.4.LCu)

MMA/SMAW welding

ISO 3581 E 27 31 4 Cu L R/AWS A5.4 E383-16 (e.g. Exaton 27.31.4.LCuR)