Mark 03H17N14MZ refers to high-alloy steel austenitic. It is used in the manufacture of components and weldments that are involved in the production of caprolactam, urea, in an aggressive environment of sulfuric acid or phosphoric boiling 10% acetic acid. This steel is used for the manufacture of faucets and liners urea synthesis column, and in the production of caprolactam — reactor for the production of cyclohexane oxidation.
03H17N14M3 brand production normalized following requirements
1) GOST 5632−72 «high-alloy steels, heat resistant alloys, high-temperature corrosion. Stamps «.
2) GOST 25 054−81 «Forgings of corrosion-resistant alloys and steels. General tech. conditions».
3) GOST 5582−75 «Rolled sheet heat-resistant refractory corrosion resistant. Those. conditions»
4) TU: 14−1-240−72; 14−1-692−73; 14−1-1183−74; 14−1-1154−74; 14−1-1541−75; 14−3-396−75; 14−1-2134−77; 14−1-2132−77; 14−1-2144−77.
The percentage of
|≤0,03||16,8- 18.3||≤0,4||1−2||2.2 -2.8||13,5−15||≤0,035||≤0,02||The basis|
Mechanical properties at 20 ° C
|GOST, TU||products||σ in N / mm²||σ 0,2, N / mm²||δ 5%|
|14−1-692−73||sheet metal, cold||500||200||-|
The mechanical properties at low and high t º (6 mm sheet, the process of quenching in water from 1100 ° C)
|es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%||es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%|
Mechanical properties at high tº (20 mm sheet, the process of quenching in water from 1100 ° C)
|es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%||ψ,%||KCU, J / cm 2||n, of|
Physical properties at t ° 20 ° C
Density 7.75 g / cm 3; thermal conductivity — 29.4 W (mxK); resistivity is 0,73Om · mm 2 / m; modulus 0,195 N / mm 2 and 0.0019 N / mm 2 at 300 ° C; thermal expansion coefficient α = 16,1×10−6 / ° C at t ° 20−200 ° C and 14,4×10−6 / ° C at t ° 20−300 ° C.
In accordance with the following specifications: 14−1-1154−74, 01/14/69 273 14−1-1541−75, 14−1-2144−77 and 14−1-240−72) 03H17N14MZ steel resists intergranular corrosion 65% boiling HNO 3 (sp. gravity of 1.41 g / cm 3), which is prepared in accordance with GOST 11 125−73. The duration of the tests on all of the above specifications, in addition to TU 14−1-2144−77 is 3 cycles of 48 hours for samples in the hardened state according TW 14−1-2144−77 duration of the test -. 5 to 48 clock cycles. Indicator corrosion rate in this case must not prevіshat 0.5 mm / year.
In accordance with GOST 5582−75, this steel is resistant to intergranular corrosion by the method of control GOST 6032−89; according to TU 14−1-1847−76 control for resistance against the ICC carried out by the method of GOST 6032−89 AMU. In all cases, control of the resistance against the ICC carried out on the samples after quenching.
Goes hot plastic deformation in a temperature range of 1150−900 ° C; steel itself has high ductility both in hot and in cold deformation. To remove the work hardening after hot or cold deformation, heat treatment is applied, consisting of quenching in water at t ° 1060 — 1100 ° C.
Steel brand 0ZH17N14MZ characterized by good weldability lyubіmi types of welding. For manual arc welding, automatic submerged arc welding or inert gas are used electrodes RLA-20 with 03H17N14M2 wire (EP551). Note that the strength and corrosion resistance of welded joints while the same as that of the base metal. The welds of the steel in the environment of the synthesis of urea have 0,041−0,11 corrosion rate mm / year, they are resistant to intergranular corrosion and corrosion of the blade.
Presented 03H17N14M3 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.
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