Wire 08Х18Н10Т - 1.4541 - aisi 321
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 08X18H10T | EI914 | 1.4541 | 321 | X6CrNiTi18-10 | Delivery from the stock, in stock |
Relevance
AISI 321 grade refers to corrosion-resistant heat-resistant high-temperature steels. It is not resistant in sulfur-containing media. Recommended temperature of use is 600-800 ° C, with a very long service life. Steel AISI 321 and welded seams are not susceptible to intergranular corrosion, due to the addition of titanium. Despite this, welded pieces of AISI 321 should never be used in highly oxidizing environments. It is used in the production of welded equipment: parts of furnace fittings, heat exchangers, retorts, muffles, headers and nozzles of exhaust systems, pipes, electrodes of spark plugs.
Percentage composition
| P (max) | Mn (max) | C (max) | S (max) | Ti | Ni | Cr | Si (max) | |
|---|---|---|---|---|---|---|---|---|
| AISI 321 | 0,045 | 2,0 | 0,10 | 0,015 | 5*C-0,5 | 8,00-11,0 | 17,0-19,0 | 1,0 |
Heat treatment: Air cooled, Tempering 1020 - 1100ºC
Density: 7900-8200Kg/m3
Steel hardness: HB 10-1 = 179 MPa.
Mechanical properties of steel 321 at 20ºC
Steel welding: no restrictions
Mechanical properties of steel at room temperature.
| Properties | Minimum | Typical |
|---|---|---|
| Elastic limit Rp 0.2, (0.2%), N/mm2(yield strength) | 205 | 280 |
| Tensile strength Rp m, N/mm2(tensile strength) | 515 | 580 |
| Tensile strain A80 to break in % | 40 | 60 |
| Fatigue strength, N/mm2 | - | 260 |
| Brinell hardness - NV | - | 163 |
High temperature properties
Tensile strength at elevated temperatures
| Tensile strength, Rp m N/mm2 | 390 | 329 | 280 | 230 | 190 | 140 |
|---|---|---|---|---|---|---|
| Temperature, °C | 600 | 650 | 700 | 750 | 800 | 850 |
Tensile strength (yield strength)
| Temperature,°C | Time | 800 | 700 | 650 | 600 | 500 |
|---|---|---|---|---|---|---|
| Stress MPa | 1 000 h | 30 | 70 | 140 | 180 | 270 |
| Stress MPa | 10 000 h | 10 | 50 | 90 | 130 | 240 |
| Stress MPa | 100 000 h | 5 | 15 | 50 | 90 | 200 |
Min. elastic limit value at high temperatures (strain over a set time of 1% at a given temperature)
| Temperature,°C | Time | 800 | 700 | 650 | 600 | 550 |
|---|---|---|---|---|---|---|
| Rp1.0 1.0% plastic deformation (fluidity), N/mm2 | 10 000 ч | 10 | 40 | 70 | 100 | 180 |
| Rp1.0 1.0% plastic strain (fluidity), N/mm2 | 100 000 ч | 5 | 25 | 50 | 80 | 120 |
Maximum recommended service temperature
Dross formation temperature
intermittent exposure 810°C
900°C continuous exposure
Heat treatment
1. annealing temperature of 1050 to 1150°C with rapid cooling with cold air for maximum strength.
2. Stress relieving (tempering) is carried out by annealing between 450 and 800°C in order to avoid the formation of carbide grains, which provoke corrosion on the grain boundaries.
3. Forging range. The temperature at the beginning of the process is 1150 - 1250 °C, at the end it is about 950 °C.
The time to reach homogeneous heating of stainless steels is longer than that of carbon steels, about 12 times longer. A gradual decrease in temperature is necessary to guarantee the distribution of carbon.
Welding
Good, but because of the inclusion of titanium - more difficult than 304/304L. For welding, use series 347 electrodes (stabilized with niobium), which has improved creep resistance compared to 308L steel in environments where the operating temperature is above 400 °C.
| Rolled steel | σin (MPa) | E.g. | Size | σt (MPa) | KCU (kJ.m2) | ψ?(%) | δ5 (%) |
|---|---|---|---|---|---|---|---|
| rod | 490 | ø 60 | 196 | 55 | 40 | ||
| Bar | 490 | ø 60 | 196 | 55 | 40 | ||
| Thick plate | 520 | 210 | 43 | ||||
| Hot-worked pipes. | 510 | 40 | |||||
| Annealed wire | 1400-1600 | ø 8 | 20 | ||||
| Forgings | 490 | 196 | 40 | 35 |
Application
Production of equipment for oil refining and chemical industries, also in the production of equipment operating at high temperatures. Steel AISI 321 is also used in the production of such welded equipment as heat exchangers, pipes, muffles, furnace fittings, retorts, nozzles of exhaust systems and manifolds, electrodes of spark plugs. Also widely used by industries such as food, textile, pharmaceutical, and paper.
Delivery
Presented products brand AISI 321 certified. Technical documentation includes data on chemical composition, maximum percentage of impurities and mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.
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All stainless alloys sold by Evek GmbH meet GOST and international quality standards. We supply rolled metal products of standard and non-standard sizes in the shortest terms. High quality, reasonable prices and a wide choice of products determine the face of our company. Becoming our regular client you can count on a system of discount discounts. Cooperation with us will help you realize any engineering plans. We are waiting for your orders on our site.