Steel ПКр70-72 (Жр70-72)

Designation

Name The value
Designation GOST Cyrillic ПКр70-72
Designation GOST Latin PKp70-72
Transliteration PKr70-72
By chemical elements PCoр70-72
Name The value
Designation GOST Cyrillic Жр70-72
Designation GOST Latin Zhp70-72
Transliteration Gr70-72
By 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
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
≥392 ≥1 ≥98 140-190

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.