Steel G9

Designation

Name The value
Designation GOST Cyrillic Р9
Designation GOST Latin P9
Transliteration R9
By chemical elements -

Description

P9 steel is used: for the manufacture of tools of simple shape without requiring a large volume grinding; tool handle common construction materials; springs and measuring tapes; Hach saws.

Standards

Name Code Standards
Bars and shapes В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Tape В34 GOST 2283-79, GOST 23522-79
Sheets and strips В33 GOST 4405-75, TU 14-1-1408-75, TU 14-1-3508-82
Bars and shapes В32 GOST 7417-75, GOST 14955-77, GOST 19265-73, TU 14-11-245-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe V Mo W Co
GOST 19265-73 0.85-0.95 ≤0.03 ≤0.03 ≤0.5 3.8-4.4 ≤0.5 ≤0.4 Rest 2.3-2.7 ≤1 8.5-9.5 ≤0.5
Fe is the basis.
The chemical composition is given in accordance with GOST 19265-73 in the edition of 1986. In GOST 19265-73 edition of 2003 information about this brand was not available.

Mechanical properties

Section, mm t отпуска, °C σU, MPa HRB
Cold-rolled steel strip for Hach saws 0.65 mm in the delivery state according to GOST 23522-79
- ≤880 100
Rolled steel. Quenching in oil from 1230 °C to + Leave three times for 1 h
- 200 ≥1030 -
Cold-rolled steel strip otoshiana common quality of 0.1-4.0 mm according to GOST 2283-79 on delivery
- ≤880 -
Rolled steel. Quenching in oil from 1230 °C to + Leave three times for 1 h
- 300 ≥1080 -
- 400 ≥1270 -
- 500 ≥1470 -
- 600 ≥1960 -

Description mechanical marks

Name Description
σU Limit short-term strength
HRB Rockwell hardness (indenter steel, spherical)

Physical characteristics

Temperature Е, HPa G, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
20 220 83 8300 - 380
100 - - - 23 417
200 - - - 25 505
300 - - - 26 600
400 - - - 28 695
500 - - - 30 790
600 - - - 31 900
700 - - - - 1020
800 - - - - 1160
900 - - - - 1170

A description of the physical symbols

Name Description
Е The normal elasticity modulus
G Modulus of elasticity shear torsion
l Coefficient of thermal conductivity

Technological properties

Name The value
Weldability When butt welding with steel 45 and 40CR good.
The temperature of forging Start - 1200 °C, the end of - 900 °C. Cooling in the wells ranging from 750-800 °C.
Machinability When HB 205-255 Kn TV.SPL.=0.8 Kn b.St.=0,6.
Features of heat treatment Prone to overheating during hardening.
Sanding behaviour Reduced.
Viscosity Good toughness and wear resistance.