03Х18Н11 - 1.4306 - aisi 304L tube
International Equivalent
Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
---|---|---|---|---|---|
03Х18Н11 | 1.4306 | ~304L | X2CrNi19-11 | Delivery from the stock, in stock |
Relevance
Mark 03H18N11 relates to austenitic chromium-nickel steel. It is relevant in chemical engineering in the production of welded pipes and tanks in contact with boiling 70% nitric acid, 45−80% HNO 3 at t ° 80−140 ° C, and for parts resistant to adipic acid, ammonium nitrate, nitrous gases in the environment, at t ° up to 80 ° C. The welds of the steel are resistant to blade corrosion, withstand pressure of up to 5 N / mm². The temperature range of use of welded structures: from -196 ° C to + 300 ° C.
Production
Steel is melted in an open electric arc furnaces, induction furnaces vacuum while using low carbon ferro-alloys. Methods are also used oxygen refining of molten metal and vacuum decarburizing a melt in a ladle. On alloy 03H18N11 following GOSSTANDART provided: 1133−71; 5582−75; 25, 054−81; 5632−72 and TU: 14−1-1160−74; 14−1-1180−74; 14−1-2144−77; 14−1-2450−78; 14−1-3071−80; 14−1-3652−83; 14−1-490−72; 14−4-3071−80.
The percentage of
C | Cr | Si | Mn | Ni | P | S | Fe |
---|---|---|---|---|---|---|---|
≤0,03 | 17−19 | ≤0,8 | ≤2 | 10.5−12.5 | ≤0,035 | ≤0,02 | The basis |
The mechanical properties at 20 ° t ° C
GOST, TU | products | σ in N / mm² | σ 0,2, N / mm² | δ 5% | ψ,% |
---|---|---|---|---|---|
14−1-1160−74 | rods | 500 | 200 | 40 | 50 |
14−1-490−72 | sheets, hot-rolled | 500 | 200 | 45 | - |
14−1-2144−77 | sheets, hot-rolled | 500 | 200 | 40 | - |
14−1-3071−80 | sheets, hot-rolled | 520 | 200 | 45 | - |
14−1-3071−80 * 1 | sheets, hot-rolled | 470 | 176 | 40 | - |
GOST 5582−75 | sheet metal, cold | 500 | 200 | 40 | - |
14−1-1180−74 | sheet metal, cold | 520 | 200 | 45 | - |
14−1-3386−82 | Tapes | 600−750 | - | thirty | - |
14−1-3652−83 | Tapes | 540−720 | - | 37 | - |
14−3-1401−86 * 1 | seamless pipes | 460 | 186 | 45 | - |
14−1-3183−81 * 1 | Round billet | 451 | 157 | - | - |
14−1-2132−77 * 1 | Round billet | 490 | 196 | 45 | - |
* 1 Steel 02H18N11 brand.
The mechanical properties of the steel grade 03H18N11 at room and elevated t º (sheet size of 8 mm, the process of quenching in water from 1100 ° C)
es t, ° C | σ 0,2, N / mm² | σ in N / mm² | δ 5% | ψ,% | es t, ° C | σ 0,2, N / mm² | σ in N / mm² | δ 5% | ψ,% |
---|---|---|---|---|---|---|---|---|---|
20 | 280 | 550 | 55 | 73 | 300 | 260 | 390 | 36 | 70 |
150 | 240 | 440 | 40 | 69 | 400 | 190 | 370 | 35 | 67 |
200 | 260 | 420 | 40 | 73 | 450 | 220 | 370 | 33 | 67 |
The mechanical properties of the steel grade 03H18N11 at high t º (sheet size of 8 mm, the process of quenching in water from 1100 ° C, the sample longitudinal)
es t, ° C | σ 0,2, N / mm² | σ in N / mm² | δ 5% | ψ,% | es t, ° C | σ 0,2, N / mm² | σ in N / mm² | δ 5% | ψ,% |
---|---|---|---|---|---|---|---|---|---|
500 | 1780 | 280 | 38 | 56 | 900 | 80 | 110 | 38 | 66 |
700 | 120 | 210 | 36 | 63 | 1000 | 25 | 70 | 42 | 78 |
800 | 100 | 130 | 37 | 64 | - | - | - | - | - |
Influence t hardening on the mechanical properties of the alloys (sheet of Mechel OAO; data according GIAP, Moscow)
Steel | Si | FROM | σ in / σ 0,2, N / mm² | δ 5% | σ in / σ 0,2, N / mm² | δ 5% | σ in / σ 0,2, N / mm² | δ 5% | σ in / σ 0,2, N / mm² | δ 5% |
---|---|---|---|---|---|---|---|---|---|---|
1040 ° C | 1080 ° C | 1050 ° C | 1200 ° C | |||||||
02H18N11 | 0.2 | 0,025 | 553/228 | 60 | 553/220 | 60 | 540/205 | 63 | 520/200 | 67 |
03H18N11 | 0.78 | 0.03 | 590/250 | 56 | 580/250 | 58 | 555/205 | 60 | 545/210 | 63 |
physical properties
Steel resistant to intergranular corrosion after provoking leave (1 hour at 650 ° t ° C). Tests in accordance with GOST 6032−89 control. The corrosion rate should not exceed 0.5 mm / year in 03H18N11 and 0.4 mm / year in 02H18N11.
Behavior 02H18N11 steel against corrosion
Si | C | Mask loss in g / m² | The depth of corrosion in the weld zone 1 * in micrometers | 1075 ° C | 1120 ° C | 1150 ° C |
---|---|---|---|---|---|---|
0.14 | 0,025 | 83 | 23 | 0.19 | 0.2 | 0.18 |
Welded * 1 samples have been tested in a purge column operating conditions in the production of nitric acid (56−60% HNO 3, t = 130 ° C, 10 to 390 hours).
Technological processing parameters
The heating temperature for rolling ingots 1240−1260 ° C. Temperature range of semi-finished hot deformation of 1100−900 ° C, to remove the work hardening after cold or hot deformation, softening heat treatment is applied. The hardening is carried out in water at t ° 1040−1100 ° C. Machinability, like steel X18H10T. The content in the α-phase plates — no more than 0.5 points.
Welding
Good weldability. For manual arc welding electrodes are used RLA-22 with wire grade Sv-01H18N10. With automatic submerged arc welding or shielding gases used 01X18N10 St-wire (St-01H19N9). Note that according to the conclusion NIICHIMMASH corrosion resistance and strength of welded joints is not lower than that of the base metal. Unlike 08X18NYUT, welded joints of steel grade and 03H18N11 02H18N11 in oxidizing environments resistant to blade corrosion. Welds of the same steel can be annealed to relieve stress, it does not have to fear the appearance of their tendency to intergranular corrosion.
Supply
All submitted 03H18N11 rental brand certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
Buy at the best price
In stock company «Electrovek-steel» is represented by a diverse range of stainless steel alloys. We supply certified products of domestic and foreign manufacturers. Our staff members are always happy to provide expert assistance in the selection of metal-roll. We employ some of the most experienced management consultants. Strict compliance with the rules of production, excellent product quality and minimal lead times are the face of our company. For regular customers introduced discount prices.