Steel 10KH18N11BL (5Х18Н11БЛ)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
10Х18Н11БЛ |
| Designation GOST Latin |
10X18H11BL |
| Transliteration |
10H18N11BL |
| The chemical elements |
10Cr18Н11Nb |
| Name |
The value |
| Designation GOST Cyrillic |
5Х18Н11БЛ |
| Designation GOST Latin |
5X18H11BL |
| Transliteration |
5H18N11BL |
| The chemical elements |
5Cr18Н11Nb |
Description
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).
Note
Stabilized chromium-Nickel austenitic steel, corrosion resistant, heat resistant up to +800 °C.
Steel 10KH18N11BL insensitive to intergranular corrosion.
Standards
| Name |
Code |
Standards |
| Castings with special properties (cast iron and steel) |
В83 |
GOST 2176-77, TU 4112-78269737-009-05 |
| Castings, steel |
В82 |
GOST 977-88 |
| Thermal and thermochemical treatment of metals |
В04 |
STP 26.260.484-2004 |
| Pipes steel and connecting parts to them |
В62 |
TU 1333-047-00220302-02 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Nb |
| GOST 977-88 |
≤0.1 |
≤0.03 |
≤0.035 |
1-2 |
17-20 |
0.2-1 |
8-12 |
The rest |
- |
0.45-0.9 |
| GOST 2176-77 |
≤0.1 |
≤0.03 |
≤0.035 |
1-2 |
17-20 |
0.2-1 |
8-12 |
The rest |
≤0.3 |
0.45-0.9 |
Fe is the basis.
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.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| The castings are supplied according to GOST 2176-77 |
| - |
≥196 |
≥441 |
≥25 |
≥35 |
≥588 |
| Casting for STP 26.260.484-2004. Quenching in water from 1100-1150 °C or Stabilizing annealing at 870-900 °C, air cooling |
| 100 |
≥200 |
≥450 |
≥25 |
≥35 |
≥590 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| 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. |
