12Х18Н9Т -eya1t wire, circle
|Mark||Analogue||W. Nr.||Aisi Uns||En||Order|
|12X18H9T||Delivery from the stock, in stock|
Production and application
12X18H9T steel is an austenitic class chromium-nickel alloy. It is melted in electric arc furnaces. Production is regulated by the following GOSTs: 18 143-72; 5632-72;18 907-73; 4405-75; 5949-75;5582-75; 7350-77; 4986-79; 25054-81; 9940-81; 9941-81; and also TU 14-1-377-72, 14-1-416-72 and 14-1-565-84. Such steel is used in welded structures (heat exchangers, vessels) operating in dilute solutions of HNO3, medium concentrations of organic acids, organic solvents, under the action of soil and atmospheric moisture, cryogenic temperatures up to -196 ° C. It is used in power engineering industry at temperatures up to +600°C, e.g. for heat-exchange fittings of TVEL with water coolant, turbine blades, compressor and pump parts.
Mechanical properties of rolled products atto 20o C
|Bar ≤Ø 60 mm||5949-75||540||196||40||55||Hardening 1020 - 1100o C, air cooling|
|Forgings ≤ 1000 mm||25 054-81||510||196||35-40||40-48||Tempering at 1050 - 1100o C,|
|Sheet thick,||7350-77||530||215||38||Tempering 1030 - 1080o C, water cooling|
|Electroplated rod||18 907-73||880-930|
σB - short-term strength limit;
σT - yield strength for permanent deformation;
δ5 - relative elongation at break;
ψ - relative narrowing, [ % ].
Mechanical properties as function of temperature (rod Ø18-25 mm, hardened at 1050 °C in water)
σc - Ultimate short-term strength, [MPa]
δ5, - Relative elongation at break, [ % ]
ψ - Relative narrowing, [ % ]
Mechanical properties of 12Х18Н9Т at high tº
|tisp, °C||σc, N/mm²||δ5, %||ψ, %||KCU, J/cm2||n, r|
Note to the table: In the numerator the structural content of 6-ferrite after heat treatment
<3%, and in the denominator - 35-40% (process of quenching in water from 1150 °С).
Mechanical properties of 12Cr18Ni10Ti depending on the degree of cold deformation (sheets, initial heat treatment: quenching process with 1050 °C in water)
|Degree of compression, %||σ0,2, N/mm²||σc, N/mm²||δ5, %||Degree of compression, %||σ0,2, N/mm²||σ in, N/mm²||δ5, %|
Note: Numerator is test tº 20 °C; denominator is 253 °C.
Physical properties at 20°C
Density 7.9 g/cm³, specific electrical resistance 0.75 Ohm - mm2/m, modulus of elasticity 18 - 10-4, N/mm2.
Properties of steels at low, elevated and high tº
|tisp||E - 10-4 N/mm2||λ, W/(m - K)||ρ -106, Ohm - m||c, J/(kg - K)|
Temperature coefficient of linear expansion
|t, °C||0 to 20||From -23 to 20||From -83 to 20||From -103 to 20||From -123 to 20||From -143 to 20||From -163 to 20||From -183 to 20||From -196 to 20||From -223 to 20||From -253 to 20|
|α - 106, К-1||15,7||15,5||15||14,9||14,7||14,3||13,9||13,4||13||12,2||11,2|
The 8-ferrite content should be taken into account in hot work. Castings with 20% or more 8-ferrite are heated to 1250 °C, those containing 16-19% are heated to 1255 °C; those containing less than 16% are heated to 1270 °C. Generally, the pressure treatment is carried out at 1180-850 °C. Heating and cooling rates are not limited. A high degree of plastic deformation is possible in the cold state. To relieve the stress of welds they are subjected to stabilizing annealing (850-900 ° C).
When automatic submerged-arc welding or argon-arc welding wire Sv-08Cr19Ni10B, Sv-05Cr20Ni9FBS, Sv-04Cr22Ni10BT andWith manual welding - type EA-1F2 electrodes CL-2B2, GL-2, EA-606/11 with a wire Св-05Х19Н9ФЗС2, Св-05Х19Н9ФЗС2 and Св-08Х19Н9Ф2S2. Wire Sv-08Х20Н9S2BTU in shielding gas is used for manual automatic welding.
Electrodes CL-11 and CL-9 with wire rod Св-07Х19Н10Б and Св-07Х25Н13 respectively are used for manual arc welding. When tested according to AM and AMU
We supply certified 12Х18Н9Т grade steel. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale production. 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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