Designation
| Name |
The value |
| Designation GOST Cyrillic |
ПК70Д3-72 |
| Designation GOST Latin |
PK70D3-72 |
| Transliteration |
PK70D3-72 |
| By chemical elements |
PCo70Cu3-72 |
| Name |
The value |
| Designation GOST Cyrillic |
Ж70Д3-72 |
| Designation GOST Latin |
Zh70D3-72 |
| Transliteration |
G70D3-72 |
| By chemical elements |
Ж70Cu3-72 |
Description
Steel ПК70Д3−72 is used: for the manufacture by the method of double pressing sredneshirotnykh structural components used in mechanical engineering and instrument making.
Note
Powder steel carbon alloy with copper.
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 |
Cu |
| OST 107.460094.118-88 |
0.5-0.8 |
Rest |
2.5-3 |
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 |
|
≥490 |
≥1 |
≥98 |
180-240 |
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 |
7100 |
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 |
Pelletieri. Allowed ferrite to 50% and cementite in the form of a torn grid. |
