2022-10-26 13:36
(supersedes all previous editions)
Alleima® 3R65 is a molybdenum-alloyed austenitic stainless chromium-nickel steel with a low carbon content.
C | Si | Mn | P | S | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|
≤0.030 | 0.4 | 1.7 | ≤0.040 | ≤0.015 | 17 | 11.5 | 2.1 |
Alleima® 3R65 is used in a wide variety of industrial applications. Typical examples are heat exchangers, condensers, pipelines, cooling and heating coils in the chemical, petrochemical, pulp and paper and food industries.
Alleima® 3R65 has good resistance to:
Resistance of these types of corrosion improves with molybdenum content. Alleima® 3R65 has substantially higher resistance to attack than steels of type AISI 304.
Alleima® 3R65 can be used in
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.
Seamless tube and pipe in 3R65 is supplied in dimensions up to 260 mm outside diameter in the solution annealed and white-pickled condition or in the bright-annealed condition.
We can also deliver other product forms from stock in a grade corresponding to 316L mainly:
The tubes are delivered in heat treated condition. If additional heat treatment is needed after further processing the following is recommended.
850-950°C (1560-1740°F), 10-15 minutes, cooling in air.
1000-1100°C (1830-2010°F), 5-20 minutes, rapid cooling in air or water.
For tube and pipe with wall thicknesses greater than 10 mm (0.4 in.) the proof strength may fall short of the stated values by about 10 MPa 2 (1.4 ksi).
Proof strength | Tensile strength | Elong. | Hardness | ||
---|---|---|---|---|---|
Rp0.2a | Rp1.0a | Rm | Ab | A2" | HRB |
MPa | MPa | MPa | % | % | |
≥220 | ≥250 | 515-690 | ≥45 | ≥35 | ≤90 |
At 68°F
Proof strength | Tensile strength | Elong. | Hardness | ||
---|---|---|---|---|---|
Rp0.2a | Rp1.0a | Rm | Ab | A2" | HRB |
ksi | ksi | ksi | % | % | |
≥32 | ≥35 | 75-100 | ≥45 | ≥35 | ≤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 ÖS0 where L0 is the original gauge length and S0 the original cross-section area.
Due to its austenitic microstructure, Alleima® 3R65 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.
Temperature | Proof strength | |
---|---|---|
°C | Rp0.2 | Rp1.0 |
MPa | MPa | |
min. | min. | |
50 | 200 | 230 |
100 | 180 | 215 |
150 | 165 | 195 |
200 | 150 | 180 |
250 | 140 | 170 |
300 | 130 | 160 |
350 | 120 | 150 |
400 | 115 | 145 |
450 | 115 | 145 |
500 | 110 | 140 |
550 | 110 | 140 |
600 | 95 | 120 |
Temperature | Proof strength | |
---|---|---|
°F | Rp0.2 | Rp1.0 |
ksi | ksi | |
min. | min. | |
200 | 27 | 32 |
400 | 22 | 26 |
600 | 18 | 24 |
800 | 17 | 21 |
1000 | 16 | 20 |
Density: 8.0 g/cm3 , 0.29 lb/in3
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 |
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 |
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 | 86-1000 | 10 |
30-600 | 18.5 | 86-1200 | 10.5 |
30-700 | 18.5 | 86-1400 | 10.5 |
1) Mean values in temperature ranges (x10-6)
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)
The weldability of Alleima® 3R65 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® 3R65, heat input of <2.0 kJ/mm and interpass temperature of <150°C (300°F) are recommended.
TIG/GTAW or MIG/GMAW welding
ISO 14343 S 19 12 3 L / AWS A5.9 ER316L (e.g. Exaton 19.12.3.L)
MMA/SMAW welding
ISO 3581 E 19 12 3 L R / AWS A5.4 E316L-17(e.g. Exaton 19.12.3.LR)
ISO 14343 S 19 12 3 L / AWS A5.9 ER316L (e.g. Exaton 19.12.3.L) wire or strip electrodes are recommended for overlay welding of tube sheets and high-pressure vessels in cases where corrosion resistance, equal to that of Alleima® 3R65, is required.
Alleima® 3R65 has good machining properties. Tool and cutting data recommendations are the same as for steel 3R60 in brochure S-1462-ENG.
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.