Alloy KHN70JU (ЭИ652)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН70Ю |
| Designation GOST Latin |
XH70Ju |
| Transliteration |
HN70Yu |
| The chemical elements |
CrNi70Al |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ652 |
| Designation GOST Latin |
EI652 |
| Transliteration |
EhI652 |
| The chemical elements |
- |
Description
Alloy KHN70JU applies: for production of components of gas pipeline systems and various parts operating at moderate voltages, at 1100−1200 °C (can be applied to the heating resistance elements); a welding wire used for welding parts and welding of steel structures in energy engineering; welding electrodes; welding parts and assemblies working in radioactive environments, connections of details from alloy grade 46ХНМ (ЭП630) with details of korrozionnostojkih steel type 12X18H10T, 10X17H13M2T.
Note
Alloy, heat-resistant and heat-resistant Nickel-based.
The recommended maximum operating temperature for a long time +1200 °C, for a limited time +1100 °C.
The temperature of beginning of intensive scaling in air — up to +1200 °C.
Alloy KHN70JU unstable in sulfur-containing environments.
Standards
| Name |
Code |
Standards |
| Sheets and stripes |
В33 |
GOST 24982-81, TU 14-1-1909-76, TU 14-134-255-90, TU 14-1-493-72 |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90, TU 14-1-1214-75 |
| Welding and cutting of metals. Soldering, riveting |
В05 |
OST 95 10441-2002, TU 14-1-997-74, TU 14-1-997-2012 |
| Sectional and shaped rolling |
В32 |
TU 14-1-1497-75, TU 14-11-245-88 |
| Tapes |
В34 |
TU 14-1-833-74 |
| Steel alloy wire |
В73 |
TU 14-131-820-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Ti |
Mo |
Ce |
Ba |
| TU 14-1-997-74 |
≤0.1 |
≤0.012 |
≤0.015 |
≤0.3 |
26-29 |
≤0.8 |
The rest |
≤1 |
≤0.07 |
2.8-3.5 |
- |
- |
≤0.03 |
≤0.1 |
| GOST 5632-72 |
≤0.1 |
≤0.012 |
≤0.015 |
≤0.3 |
26-29 |
≤0.8 |
The rest |
≤1 |
≤0.3 |
2.8-3.5 |
≤0.2 |
≤0.3 |
≤0.03 |
≤0.1 |
Ni is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d4 |
| Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 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 |
- |
≥100 |
≥25 |
- |
| Pre-painted steel sheet. Annealing in air from 1100 °C |
| - |
≥480 |
≥880 |
- |
≥35 |
| Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 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 |
- |
≤980 |
≥30 |
- |
| Pre-painted steel sheet. Annealing in air from 1100 °C |
| - |
≥490 |
≥880 |
- |
≥37 |
| Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 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 |
- |
≥100 |
≥40 |
- |
| Pre-painted steel sheet. Annealing in air from 1100 °C |
| - |
≥370 |
≥760 |
- |
≥37 |
| - |
≥360 |
≥730 |
- |
≥35 |
| - |
≥320 |
≥480 |
- |
≥37 |
| - |
≥170 |
≥225 |
- |
≥38 |
| - |
- |
≥145 |
- |
≥50 |
| - |
- |
≥88 |
- |
≥61 |
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 |
| d4 |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 0 |
191 |
7900 |
12 |
- |
| 20 |
191 |
7900 |
117 |
- |
| 100 |
182 |
- |
13 |
1314 |
| 200 |
173 |
- |
14 |
1386 |
| 300 |
166 |
- |
16 |
1476 |
| 400 |
156 |
- |
17 |
1568 |
| 500 |
147 |
- |
19 |
1639 |
| 600 |
137 |
- |
21 |
1781 |
| 700 |
118 |
- |
23 |
2242 |
| 800 |
94 |
- |
25 |
2547 |
| 900 |
- |
- |
269 |
2134 |
| 1000 |
- |
- |
- |
2121 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| a |
The coefficient of linear expansion |
Technological properties
| Name |
The value |
| Weldability |
limited weldability, manual argon arc welding with non-consumable electrode (filler or without filler metal), use of combined methods of welding. Requires selection of special modes in the weld joint has high strength. |
| Forging temperature |
Start - 1200 °C, the end - 1100 °C. air Cooling. |
