Designation
| Name |
The value |
| Designation GOST Cyrillic |
ПК70-77 |
| Designation GOST Latin |
PK70-77 |
| Transliteration |
PK70-77 |
| By chemical elements |
PCo70-77 |
| Name |
The value |
| Designation GOST Cyrillic |
Ж70-77 |
| Designation GOST Latin |
Zh70-77 |
| Transliteration |
G70-77 |
| By chemical elements |
Ж70-77 |
Description
Steel ПК70−77 is used: for the manufacture by hot stamping sredneshirotnykh structural components used in mechanical engineering and instrument making; tool holders of the tool.
Note
Carbon steel powder.
The material should be applied after the impregnation with compounds that protect against internal corrosion. Compositions for the impregnation in accordance with OST 4G 0.054.213.
Standards
| Name |
Code |
Standards |
| Hard alloys, ceramic-metal products and metal powder |
В56 |
OST 107.460094.118-88, OST 107.460009.002-90 |
Chemical composition
| Standard |
C |
Fe |
| OST 107.460094.118-88 |
0.5-0.8 |
Rest |
Fe is the basis.
Mechanical properties
| Section, mm |
σU, MPa |
d |
KCU, kJ/m2 |
HB, MPa |
| Properties of the material to heat treatment at OST 107.460094.118-88 |
|
≥784 |
≥1 |
≥147 |
260-340 |
| Material properties for OST 107.460094.118-88 after heat treatment: Quenching in oil from 830 °C, cooling in oil + leave at 530 °C |
|
≥931 |
≥2 |
≥196 |
260-340 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d |
Elongation after rupture |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Physical characteristics
| Temperature |
r, kg/m3 |
| 20 |
7600 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
Technological properties
| Name |
The value |
| Microstructure |
Is not controlled to heat treatment. After heat treatment - sorbito-troostite. |
