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	σ_U, 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
σ_U	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.