Steel 10KH18N11BL (5Х18Н11БЛ)
|Designation GOST Cyrillic||10Х18Н11БЛ|
|Designation GOST Latin||10X18H11BL|
|By chemical elements||10Cr18Н11Nb|
|Designation GOST Cyrillic||5Х18Н11БЛ|
|Designation GOST Latin||5X18H11BL|
|By chemical elements||5Cr18Н11Nb|
10KH18N11BL steel is used: for the manufacture of castings of valves for the chemical industry, collectors, exhaust systems, parts, furnace fittings, boxes and lids for pickling baskets; parts of gas turbines for different purposes, parts of turbochargers operating at low loads; parts of vehicles of cellulose, nitrogen, food and soap industries; for manufacture of pipes tsentrobezhnolityh for the manufacture of the coils of the tubular furnace installations production of ammonia, hydrogen, ethylene, carbon disulphide, etc., operating in the temperature range 760−1060 °C and a pressure of 3.92 MPa (40 kgf/cm2).
Stabilized chromium-Nickel austenitic steel, corrosion resistant, heat resistant up to +800 °C.
Steel 10KH18N11BL insensitive to intergranular corrosion.
|Castings with special properties (iron and steel)||В83||GOST 2176-77, TU 4112-78269737-009-05|
|Steel castings||В82||GOST 977-88|
|Thermal and thermochemical treatment of metals||В04||STP 26.260.484-2004|
|Steel pipes and fittings to them||В62||TU 1333-047-00220302-02|
According to GOST 2176-77 the chemical composition is given for steel grade 10Х18Н11БЛ. Deviations from the norms of chemical composition are allowed: for carbon ± 0.020%; for silicon ± 0.10%; on manganese, copper, chromium and nickel ± 0.10% each; by titanium and tungsten ± 0.050% each; by vanadium, molybdenum and niobium ± 0.020% each.
|Section, mm||sT|s0,2, MPa||σU, MPa||d5, %||y, %||KCU, kJ/m2|
|The castings are supplied according to GOST 2176-77|
|Casting for STP 26.260.484-2004. Quenching in water from 1100-1150 °C or Stabilizing annealing at 870-900 °C, air cooling|
Description mechanical marks
|sT|s0,2||Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%|
|σU||Limit short-term strength|
|d5||Elongation after rupture|
|y||The relative narrowing|
|Features of heat treatment||Casting of stabilized steel foundry quenched in order to: a) prevent the tendency to intergranular corrosion (products can operate in temperatures up to 350 °C); b) to increase resistance against General corrosion; C) to eliminate the revealed tendency to intergranular corrosion; g) to prevent the tendency to stab corrosion; d) to eliminate residual stress (products simple configuration); e) to increase the plasticity of the material. The quenching products should be carried out on mode: heating to 1050-1100 °C, items material thickness up to 10 mm cooling on air, more than 10 mm in water. The holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm maximum thickness. For more austenization steel 10KH18N11BL hardening must be 1150 °C. When working in environments that cause stress corrosion cracking, castings should be subjected to stabilizing annealing regime: heating up to 870-900 °C, exposure time of 2-3 h, cooling in air.|