Sanicro 28

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Sandvik Sanicro 28 Mechanical properties

The following values apply to solution annealed material, unless otherwise stated.

At 20°C (68°F)

Proof strength Tensile strength Elong. Hardness
Rp0.2a Rp1.0a Rm Ab A2" HRB
MPa MPa MPa % %
Metric units
≥220 ≥250 550-750 ≥40 ≥40 ≤90
Proof strength Tensile strength Elong Hardness
Rp0.2a Rp1.0a Rm Ab A2" HRB
ksi ksi ksi % %
Imperial units
≥32 ≥36 80-109 ≥40 ≥40 ≤90

1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-sectional area.

Tube, pipe, plate and sheet with material thicknesses >20 mm (0.787") and bar with diameters >100 mm (3.937")

Proof strength Tensile strength Elong. Hardness
Rp0.2a Rp1.0a Rm Ab A2" HRB
MPa MPa MPa % %
Metric units
≥200 ≥230 550-750 ≥40 ≥40 ≤90
Proof strength Tensile strength Elong Hardness
Rp0.2a Rp1.0a Rm Ab A2" HRB
ksi ksi ksi % %
Imperial units
≥29 ≥33 80-109 ≥40 ≥40 ≤90

Seamless cold worked tube and pipe

Intended for oil and gas production

Proof strength Tensile strength Elong. Hardness
Rp0.2a) Rm A2" HRC
MPa ksi MPa ksi %
Sanicro 28-110 ≥760 ≥110 ≥795 ≥115 11 ≤35
Sanicro 28-125 ≥860 ≥125 ≥895 ≥130 10 ≤37

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 EN 13445-2 (UFPV-2) ( min. 60 J (44 ft-lb) at -270 oC (-455 oF)) and EN 10216-5 (min. 60 J (44 ft-lb) at -196 oC (-320oF)).

At high temperatures

Due to embrittlement caused by precipitation of intermetallic phases, Sanicro 28 should not be exposed to temperatures above 600 °C (1110 °F) for prolonged periods.

According to the ASME Boiler and Pressure Vessel Code Table 1B, Sanicro 28 is acceptable to 600ºF (316ºC) for Section III construction and 850ºF (455ºC) for Section I (Code Case 1325-18) and Section VIII, Division 1 construction.

Tube, pipe, plate and sheet with material thicknesses <20 mm (0.787") and bar with diameters <100 mm (3.937")

Temperature Proof strength Tensile strength
Rp0.2 Rp1.0 Rm
°C MPa MPa MPa
min min min
Metric units
50 200 230 550
100 190 220 510
150 175 205 470
200 160 190 440
250 155 185 410
300 150 180 390
350 145 175 380
400 135 165 370
450 125 155 360
500 120 150 350
550 115 145 340
Temperature Proof strength Tensile strength
Rp0.2 Rp1.0 Rm
°F ksi ksi ksi
min min min
Imperial units
120 29 33 80
210 28 32 74
300 25 30 68
390 23 28 64
480 22 27 59
570 22 26 57
660 21 25 55
750 20 24 54
840 18 22 52
930 17 22 51
1020 17 21 49

Tube, pipe, plate and sheet with material thicknesses >20 mm (0.787") and bar with diameters >100 mm (3.937")

Temperature Proof strength Tensile strength
Rp0.2 Rp1.0 Rm
°C MPa MPa MPa
min min min
Metric units
50 180 205 550
100 160 190 510
150 150 180 470
200 140 170 440
250 130 160 410
300 120 150 390
350 115 140 380
400 110 135 370
450 105 130 360
500 100 125 350
550 95 120 340
Temperature Proof strength Tensile strength
Rp0.2 Rp1.0 Rm
°F ksi ksi ksi
min min min
Imperial units
120 26 30 80
210 23 28 74
300 22 26 68
390 20 25 64
480 19 23 59
570 17 22 57
660 17 20 55
750 16 20 54
840 15 19 52
930 15 18 51
1020 14 17 49

Creep strength

Temperature Creep rupture strength
10 000 h 100 000 h
°C MPa MPa
approx. approx.
Metric units
550 262 193
600 186 146
650 122 93
700 82 62
Temperature Creep rupture strength
10 000 h 100 000 h
°F ksi ksi
approx. approx.
Imperial units
1020 38 28
1110 27 21
1200 18 13
1300 12 9

Sanicro 28 (Tube and Pipe, Seamless)

Datasheet updated 2015-02-16 10:39:36 (supersedes all previous editions)

Sanicro 28 is a high-alloy multi-purpose austenitic stainless steel for service in highly corrosive conditions. The grade is characterized by:

  • Very high corrosion resistance in strong acids
  • Very good resistance to stress corrosion cracking (SCC) and intergranular corrosion in various environments
  • High resistance to pitting and crevice corrosion
  • Good weldability

Standards

  • UNS N08028
  • ISO 4563-080-28-I
  • EN number 1.4563
  • EN name X 1 NiCrMoCu 31-27-4
  • W.Nr. 1.4563
  • DIN X 1 NiCrMoCuN 31 27 4
  • SS 2584
  • AFNOR Z1NCDU31-27-03

Product standards

Seamless tube and pipe: ASTM B 668; EN 10216-5; SEW 400 (Feb 1991); SS 14 25 84;
NFA 49-217
Plate, sheet and strip: ASTM B 709, EN 10088-2; SS 14 25 84
Bar steel: EN 10088-3; SS 14 25 84
Fittings: ASTM A 403 (chemical composition and mechanical properties according to ASTM B668)

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Approvals

  • Approved by the American Society of Mechanical Engineers (ASME) for use in accordance with ASME Boiler and Pressure Vessel Code, section III, section I (Code Case 1325-18) and section VIII, division 1.
  • VdTÜV-Werkstoffblatt 483 (Austenitischer Walz- und Schmiedestahl)
  • NACE MR 0103 (Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments)
  • NACE MR0175/ISO 15156 (sulphide stress cracking resistant material for oil field equipment)
  • NGS 1608 (Nordic rules for application) valid for Sandvik Sanicro 28 made by Sandvik

 

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