Steel ПКр70-72 (Жр70-72)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ПКр70-72 |
| Designation GOST Latin |
PKp70-72 |
| Transliteration |
PKr70-72 |
| The chemical elements |
PCoр70-72 |
| Name |
The value |
| Designation GOST Cyrillic |
Жр70-72 |
| Designation GOST Latin |
Zhp70-72 |
| Transliteration |
Gr70-72 |
| The chemical elements |
Жр70-72 |
Description
Steel ПКр70−72 is used: for the manufacture by the method of double pressing sredneshirotnykh structural components used in mechanical engineering and instrument making.
Note
Carbon steel powder from atomized powders.
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 |
| Solid alloys, metal-ceramic products and powders, metal |
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 |
The rest |
Fe is the basis.
Mechanical characteristics
| Section, mm |
σB, MPa |
d |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Properties of the material to heat treatment at OST 107.460094.118-88 |
|
≥392 |
≥1 |
≥98 |
140-190 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
r, кг/м3 |
| 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. |
