Alloy Х20Н32Т (KHN32T; ЭП670)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Х20Н32Т |
| Designation GOST Latin |
X20H32T |
| Transliteration |
H20N32T |
| The chemical elements |
Cr20Ni32Te |
| Name |
The value |
| Designation GOST Cyrillic |
ХН32Т |
| Designation GOST Latin |
XH32T |
| Transliteration |
HN32T |
| The chemical elements |
CrNi32Te |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП670 |
| Designation GOST Latin |
EP670 |
| Transliteration |
EhP670 |
| The chemical elements |
- |
Description
Alloy Х20Н32Т used: for the production of HRP (5−20 mm); exhaust pipes; sheet metal parts of high temperature installations in petrochemical engineering for a long service at temperatures of +700−850 °C.
Note
High-temperature alloy, iron-Nickel basis.
The recommended maximum operating temperature for a very long time +850 °C. the Temperature of beginning of intensive scaling in air to +1000 °C.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006 |
| Sectional and shaped rolling |
В32 |
GOST 14955-77, TU 14-1-284-72, TU 14-11-245-88 |
| Sheets and stripes |
В33 |
GOST 24982-81, TU 14-1-625-73 |
| Metal forming. Forgings |
В03 |
GOST 25054-81 |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90, TU 14-1-2111-77 |
| Thermal and thermochemical treatment of metals |
В04 |
STP 26.260.484-2004 |
| Pipes steel and connecting parts to them |
В62 |
TU 14-3-489-76, TU 14-158-135-2003 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Ti |
Mo |
| TU 14-1-625-73 |
≤0.05 |
≤0.02 |
≤0.03 |
≤0.7 |
19-22 |
≤0.7 |
30-34 |
The rest |
≤0.3 |
≤0.5 |
0.25-0.6 |
- |
| GOST 5632-72 |
≤0.05 |
≤0.02 |
≤0.03 |
≤0.7 |
19-22 |
≤0.7 |
30-34 |
The rest |
≤0.3 |
≤0.5 |
0.25-0.6 |
≤0.3 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
| Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 11.0 mm) in the delivery state according to GOST 24982-81. Quenching in water, under a water shower or air from 1100-1150 °C |
| ≤3.9 |
≥195 |
≥470 |
≥25 |
- |
| 4-11 |
≥175 |
≥490 |
≥30 |
- |
| Forgings. Annealing in air from 1100-1150 °C |
| ≤100 |
≥176 |
≥470 |
≥30 |
≥35 |
| Bars hot rolled and forged 20-180 mm on THAT 14-1-284-72. Quenching in water or air from 1100-1150 °C |
|
≥177 |
≥470 |
≥40 |
≥60 |
| Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1100-1150 °C |
|
≥180 |
≥490 |
≥30 |
≥35 |
| Heavy-gauge hot-rolled steel in the delivery state on the other 14-1-625-73. Quenching in water or air with 1080-1120 °C |
| 5-20 |
≥178 |
≥494 |
≥30 |
- |
| Cold-rolled tubes after austenization on delivery |
|
- |
≥470 |
≥35 |
- |
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 |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
205 |
8160 |
159 |
- |
| 100 |
- |
- |
134 |
137 |
| 200 |
- |
- |
151 |
156 |
| 300 |
- |
- |
167 |
172 |
| 400 |
- |
- |
18 |
18 |
| 500 |
- |
- |
192 |
18 |
| 600 |
- |
- |
205 |
184 |
| 700 |
- |
- |
217 |
189 |
| 800 |
- |
- |
234 |
19 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Features of heat treatment |
Product details chemical engineering from KHN32T alloy should be quenched from 1100-1150 °C. Extract with a wall thickness of 15 mm - 30 min, more than 15 mm - 30 min + 1 min per 1 mm max thickness cooling in water or air. |
