Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х21Г11АН6 |
| Designation GOST Latin |
08X21G11AH6 |
| Transliteration |
08H21G11AN6 |
| By chemical elements |
08Cr21Mn11NН6 |
| Name |
The value |
| Designation GOST Cyrillic |
ВНС-53 |
| Designation GOST Latin |
BHC-53 |
| Transliteration |
VNS-53 |
| By chemical elements |
WНС-53 |
Description
08Х21Г11АН6 steel is used: for the manufacture of pipes, equipment used for chemical industry, organic synthesis and production of sulfuric acid; equipment for pulp and paper industry.
Standards
| Name |
Code |
Standards |
| Norms for calculation and design |
В02 |
OST 1 00154-74 |
| Blanks. Of the workpiece. Slabs |
В31 |
TU 14-1-4924-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
N |
Ca |
Y |
| TU 14-1-4924-90 |
≤0.08 |
≤0.02 |
≤0.025 |
10.5-12 |
20-21.5 |
≤0.5 |
5-6 |
Rest |
0.45-0.6 |
0.01-0.03 |
0.01-0.03 |
Fe is the basis.
According to TU 14-1-4924-90, the chemical composition is presented for steel grade 08H21G11AN6h-P (VNS-53P) for plasma-arc remelting. The mass fraction of the residual elements must comply with GOST 5632. Yttrium and calcium are introduced into the metal by calculation and chemical analysis are not determined. Deviations from the specified standards of chemical composition are allowed: carbon +0.010%, nitrogen +0.050%, chromium + 0.50%, manganese + 0.50%, nickel-0.50%.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| Tubular billet on the other 14-1-4924-90. Quenching in water from 1000±25 °C (samples longitudinal samples from the forge to a square cross-section 90-100 mm) |
|
≥490 |
≥880 |
≥40 |
Description mechanical marks
| Name |
Description |
| 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 |
Technological properties
| Name |
The value |
| Pressure treatment |
Of forging of billets on the other 14-1-4924-90 must be at least 2.5. |
| Macrostructure and pollution |
In the macrostructure of billets on the other 14-1-4924-90 on cross etched templeto not allowed the remnants podnasadochnogo looseness, podsadecki segregation of dark and light crusts, foreign non-metallic microflute, subcortical bubbles, cracks, delamination, visible without using the magnifying devices. In the metal of the workpiece, the content of nonmetallic inclusions by the method of "Ш6" GOST 1778 in points shall not exceed: - oxides of stroke (OS) - 2.0 points; - point oxides (FROM) - 1.0 points, silicates fragile (CX) - 1.0 points, silicates plastic (SP) - 1.0 points, silicates, non-deformed (CH) - 1.0 points; sulphides (S) - 2.0 points; - nitrides (NS, NT) - 1.0 points. |
| Microstructure |
In the steel is controlled by the content of alpha-phase, which should not exceed 1.0 points according to the method of claim 2.7. GOST 11878. |
