Wire 08X18H10T - 1.4541 - aisi 321
AISI 321 relates to corrosion-resistant heat-resistant heat-resistant steels. Unstable in sulfur-containing environments. Recommended use temperature of 600−800°C, the lifetime of very long-lasting. Steel AISI 321 and welds are not susceptible to intergranular corrosion, by the addition of titanium. Despite this, fragments of welded AISI 321 must never be used in highly oxidizing environments. Used in the manufacture of welded equipment: details of furnace fittings, heat exchangers, retorts, muffles, manifolds and exhaust systems, pipes, electrodes incendiary spark candles.
|P (max)||Mn (max)||C (max)||S (max)||Ti||Ni||Cr||Si (max)|
Heat treatment: Cooling by air, Quenching 1020 — 1100ºC
Density: 7900−8200 Kg/m3
Hardness of steel: HB 10−1 = 179 MPa.
Mechanical characteristics of steel 321 at a temperature of 20 ° C
Welding of steel: no restrictions
Mechanical properties of steel at room temperature.
|The limit of elasticity Rp 0,2, (0.2%), N/mm2(turnover)||205||280|
|The tensile strength of Rp m, N/mm2(tensile)||515||580|
|A80 elongation to break in %||40||60|
|Fatigue strength, N/mm2||-||260|
|Brinell hardness number — NV||-||163|
Characteristics at high temperatures
Tensile strength at elevated temperatures
|Ultimate strength (tensile), Rp m N/mm2||390||329||280||230||190||140|
The limit of elasticity at break (yield)
|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|
The minimum value of the limit of elasticity at high temperatures (deformation at a set time 1% at a given temperature)
|Rp1,0 1.0% plastic deformation (yielding), N/mm2||10 000 h||10||40||70||100||180|
|Rp1,0 1.0% plastic deformation (yielding), N/mm2||100 000 h||5||25||50||80||120|
Maximum recommended service temperature
The temperature of slag formation
intermittent exposure to 810°C
continuous exposure to 900°C
1. Annealing temperature 1050 — 1150 °C with rapid cooling by cold air provides maximum strength steel.
2. Stress relief (tempering) is carried out by annealing in the range t° 450−800°C to avoid the formation of grains of carbides, which provoke corrosion at the boundaries of granules.
3. The range of forging. The temperature at the beginning of 1150 — 1250 °C, after about 950 °C.
Time, designed to achieve uniformity of heating of the stainless steels longer than carbon — about 12 times. To guarantee the distribution of carbon requires a gradual temperature reduction.
Good, but with the inclusion of titanium is harder than 304/304L. For welding electrodes are used series 347 (stabilised with niobium), which has improved in comparison with steel 308L the creep resistance in such environments where the operating temperature is above 400 °C.
|Rental||σв (MPa)||Eg.||Size||σт (MPa)||KCU (kJ.m2)||ψ?(%)||δ5 (%)|
|The wire is annealed||1400−1600||ø 8||20|
Production equipment refining and chemical industry, also in the production of equipment operating at high temperatures. Steel AISI 321 is also used in the manufacture of welded equipment such as heat exchangers, pipes, muffles, furnace parts fittings, retort, exhaust systems and manifolds, electrodes incendiary spark candles. Also widely used in such industries as food, textile, pharmaceutical, paper.
The products grade AISI 321 certified. In the technical documentation included data on chemical composition, limiting the percentage of impurities; mechanical qualities of the products. We can buy in bulk any semi-finished products for large-scale production. We also offer optimal conditions for retail customers. A high level of service and speed of service are the face of our company.
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All stainless steel alloys implemented by the company «Electrocentury-steel» comply with GOST and international quality standards. Supply metal standard and custom sizes in the shortest possible time from warehouses located on the territory of Russia and Ukraine. High quality, affordable prices and a wide range of products define the face of our company. Becoming our regular customer, You will be able to rely on the system of discount discount. Cooperation with us will help You to implement any engineering plans. Waiting for Your orders on the website evek.org.