Alleima® 5R10 Tube and pipe, seamless

Datasheet updated

2022-06-30 12:20
(supersedes all previous editions)

Alleima® 5R10 is an austenitic chromium-nickel steel with a controlled carbon content in order to obtain improved strength at high temperatures.

Standards

  • ASTM: TP304, TP304H
  • UNS: S30400, S30409
  • EN Number: 1.4301, 1.4948
  • EN Name: X5CrNi18-10, X6CrNi18-10
  • W.Nr.: 1.4301
  • DIN: X 5 CrNi 18 10
  • SS: 2333
  • AFNOR: Z 6 CN 18.09
  • BS: 304S31, 304S51
  • JIS: SUS304TP

Product standards
Seamless tube and pipe

  • ASTM A271 and A376
  • JIS G3459
  • JIS G3463
  • EN 10216-5
  • BS 3605, BS 3606
  • DIN 17456, 17458
  • NFA 49-117, 49-217
  • SS 14 23 33

Approval
JIS Approval for Stainless Steel Tubes

Chemical composition (nominal)

Chemical composition (nominal) %
C Si Mn P S Cr Ni
0.04 0.4 1.3 ≤0.040 ≤0.015 18.5 9.5

Subject to agreement, material with extra low Co content can be supplied.

Chemical composition (nominal) %

C Si Mn P S Cr Ni
0.04 0.4 1.3 ≤0.040 ≤0.015 18.5 9.5

Subject to agreement, material with extra low Co content can be supplied.

Applications

Alleima® 5R10 is used for a wide range of industrial applications with emphasis on high temperature processes. Typical examples are: heat exchangers, condensers, pipelines, cooling and heating coils in the chemical, petrochemical, fertilizer, pulp and paper and nuclear power industries, as well as in the production of pharmaceuticals, foods and beverages.

Corrosion resistance

General corrosion

Alleima® 5R10 has good resistance in:

  • Organic acids at moderate temperatures
  • Salt solutions, e.g. sulfates, sulfides and sulfites.
  • Caustic solutions at moderate temperatures

The risk of general corrosion in sulfuric acid during shut down periods has to be taken into account. Since Alleima® 5R10 is not alloyed with molybdenum, the grade can only tolerate low concentrations at limited temperatures. In naturally aerated sulfuric acid the corrosion rate is below 0.1 mm/year provided the temperature is not higher than 20°C (68oF) in 5% solution.

Intergranular corrosion

Alleima® 5R10 has a relatively high carbon content. Thus, there is a certain risk of reduced intergranular corrosion resistance if the steel has become sensitized after e.g. improper heat treatment or welding. Alleima® 3R12 has a significantly lower carbon content and is therefore more safe regarding intergranular attack.

Pitting and crevice corrosion

The steel may be sensitive to pitting and crevice corrosion even in solutions of relatively low chloride content. Molybdenum alloyed steels have better resistance and the resistance improves with increasing molybdenum content.

Stress corrosion cracking

Austenitic steel is susceptible to stress corrosion cracking. This may occur at temperatures above about 60°C (140°F) if the steel is subjected to tensile stresses and at the same time comes into contact with certain solutions, particularly those containing chlorides. Such service conditions should therefore be avoided. Conditions when plants are shut down must also be considered, as the condensates which are then formed can develop conditions that lead to both stress corrosion cracking and pitting.

In applications demanding high resistance to stress corrosion cracking we recommend the austenitic-ferritic steel SAF™ 2304.

Gas corrosion

Alleima® 5R10 can be use in

  • Air up to 850°C (1560°F)
  • Steam up to 750°C (1380°F)
  • Synthesis gas (ammonia synthesis) up to about 550°C (1020°F)

Creep behavior should also be taken into account when using the steel in the creep range. In flue gases containing sulfur, the corrosion resistance is reduced. In such environments the steel can be used at temperatures up to 600-750°C (1110-1380°F) depending on service conditions.

Factors to consider are whether the atmosphere is oxidizing or reducing, i.e. the oxygen content, and whether impurities such as sodium and vanadium are present.

Bending

Annealing after cold bending is not normally necessary, but this point must be decided with regard to the degree of bending and the operating conditions. Heat treatment, if any, should take the form of stress relieving or solution annealing, see under "Heat treatment".

Hot bending is carried out at 1100-850°C (2010-1560°F) and should be followed by solution annealing.

Forms of supply

Seamless tube and pipe

Tube and pipe are normally delivered in the solution annealed and white-pickled condition or in the bright-annealed condition. The size range can be seen from Fig. 1. U-tubes can be delivered on request.

Figure 1. Principal size range for seamless tube and pipe.

Heat treatment

The tubes are normally delivered in heat treated condition. If additional heat treatment is needed after further processing the following is recommended.

Stress relieving

850-950°C (1560-1740°F), cooling in air.

Solution annealing

1000-1100°C(1830-2010°F), rapid cooling in air or water.

Mechanical properties

For tube and pipe with wall thickness greater than 10 mm (0.4 in.) the proof strength may fall short of the stated values by about 10 MPa (1.4 ksi)

At 20°C (68°F)

Metric and imperial units
Proof strength Tensile strength Elong.
Rp0.2a) Rp1.0a) Rm Ab) A2"
MPa ksi MPa ksi MPa ksi % %
≥210 ≥30 ≥240 ≥35 515-690 75-100 ≥45 ≥35

1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 corresponds 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-section area.

The hardness (Vickers) is approximately 155

Impact strength

Due to its austenitic microstructure, Alleima 5R10 has very good impact strength both at room temperature and at cryogenic temperatures.

Tests have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196 oC (-320 oF)) according to the European standards EN 13445-2 (UFPV-2) and EN 10216-5.

At high temperatures

Metric units
Temperature
Proof strength
Rp0.2 Rp1.0
°C MPa MPa
min min
50 190 215
100 165 190
150 150 175
200 140 165
250 130 155
300 125 150
350 120 145
400 115 140
450 110 135
500 105 130
550 100 125
600
95
120
Imperial units
Temperature
Proof strength
Rp0.2 Rp1.0
°F ksi ksi
min min
200 24 28
400 20 24
600 18 22
800 16 20
1000
15
18
Creep-rupture strength (ISO-values)
Temperature 10 000 h 100 000 h
°C °F MPa ksi MPa ksi
approx. approx. approx. approx.
550 1020 195 28.3 115 16.6
575 1065 147 21.3 93 13.5
600 1110 122 17.6 74 10.7
625 1155 100 14.5 58 8.4
650 1200 79 11.5 45 6.5
675 1245 64 9.2 33 4.8
700 1290 48 7.0 23 3.3

Physical properties

Density: 7.9 g/cm3, 0.29 lb/in3

Thermal conductivity
Temperature, °C W/m °C Temperature, °F Btu/ft h °F
20 14 68 8
100 15 200 8.5
200 17 400 10
300 18 600 10.5
400 20 800 11.5
500 21 1000 12.5
600 23 1100 13
Specific heat capacity
Temperature, °C J/kg °C Temperature, °F Btu/lb °F
20 485 68 0.11
100 500 200 0.12
200 515 400 0.12
300 525 600 0.13
400 540 800 0.13
500 555 1000 0.13
600 575 1100 0.14
Thermal expansion 1)
Temperature, °C Per °C Temperature, °F Per °F
30-100 16.5 86-200 9.5
30-200 17 86-400 9.5
30-300 17.5 86-600 10
30-400 18 86-800 10
30-500 18.5 86-1000 10
30-600 18.5 86-1200 10.5
30-700 19 86-1400 10.5

1) Mean values in temperature ranges (x10-6)

Modulus of elasticity 1)
Temperature, °C MPa Temperature, °F ksi
20 200 68 29.0
100 194 200 28.2
200 186 400 26.9
300 179 600 25.8
400 172 800 24.7
500 165 1000 23.5

1) (x103)

Welding

The weldability of Alleima® 5R10 is good. Welding must be carried out without preheating and subsequent heat treatment is normally not required. 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 Alleima® 5R10, heat input of <1.5 kJ/mm and interpass temperature of <150°C (300°F) are recommended.

Recommended filler metals

TIG/GTAW or MIG/GMAW welding

ISO 14343 S 19 9 H / AWS A5.9 ER308H

MMA/SMAW welding

ISO 3581 E 19 9 H R / AWS A5.4 E308H-17

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.