Steel 65G (65Г1)

Designation

Name	The value
Designation GOST Cyrillic	65Г
Designation GOST Latin	65G
Transliteration	65G
By chemical elements	65Mn

Name	The value
Designation GOST Cyrillic	65Г1
Designation GOST Latin	65G1
Transliteration	65G1
By chemical elements	65Mn1

Description

Steel 65G used: for the production of springs, springs, thrust washers, brake bands, friction discs, gears, flanges, bearing housing, clamping and feed collets and other details, which are requirements of high wear resistance and running without shock loads; wire of square, rectangular and trapezoidal cross-sections designed for the manufacture of spring washers; blades of earth-moving machinery (bulldozers, scrapers, cultivators, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines); rolled heat-treated strip thickness 0.15−2.00 mm for the manufacture of spring details and springs, with the exception of the crown; measuring tapes; quenched and tempered carded a round wire and shaped steel used for the manufacture of brackets needle products; wire square, rectangular and trapezoidal cross-sections designed for the manufacture of spring washers; valve spring compressors, exposed after coiling heat treatment (hardening and tempering).

Note

Steel spring alloy.

Standards

Name	Code	Standards
Bars and shapes	В32	GOST 1051-73, GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-1-3287-81, TU 14-1-3861-84, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Bars and shapes	В22	GOST 1133-71, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, GOST 17152-89, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Fittings, components and parts for railway rolling stock	Д55	GOST 11530-93
Sheets and strips	В33	GOST 1577-93, GOST 4405-75, TU 14-1-1832-76, TU 14-1-2004-77, TU 14-1-4118-86, TU 14-1-417-72, TU 14-1-4516-88, TU 14-229-284-89, TU 14-15-330-94, TU 14-1-4118-2004
Test methods. Packing. Marking	Л19	GOST 19030-73
Tape	В34	GOST 2283-79, GOST 10234-77, GOST 21997-76, TU 1231-004-20504276-2000, TU 3-939-81, TU 14-4-469-73, TU 14-4-473-73, TU 14-4-281-73
Low carbon steel wire	В71	GOST 3875-83
Sheets and strips	В23	GOST 82-70, GOST 103-2006
Steel wire medium and high carbon	В72	GOST 9389-75, GOST 11850-72, GOST 26366-84, TU 3-663-85, TU 14-4-378-73, TU 14-4-386-73, TU 14-4-855-77
Classification, nomenclature and General rules	В20	OST 1 90005-91

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu
GOST 14959-79	0.62-0.7	≤0.035	≤0.035	0.9-1.2	≤0.25	0.17-0.37	≤0.25	Rest	≤0.2
GOST 17152-89 (ИСО 7129-82	0.62-0.7	≤0.035	≤0.035	0.9-1.2	≤0.25	0.17-0.37	≤0.25	Rest	≤0.2

Fe is the basis.
According to GOST 17152-89 (ISO 7129-82), according to the manufacturer's agreement with the customer, the profiles are made with the elements content: С ≤ 0.80%, Mn ≤ 1.40%. The upper limits of carbon and manganese should not coincide. The austenitic grain size should not be larger than 5 numbers in accordance with GOST 5639.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	d	d₁₀	y, %	HRC	HV, MPa
Tape flatted average strength of 0.1-4.0 mm according to GOST 10234-77 in the state of delivery (indicated delivery)
-	-	-	780-1270	-	-	-	-	-	-	-
-	-	-	780-930	-	-	-	-	-	-	-
-	-	-	930-1080	-	-	-	-	-	-	-
-	-	-	1080-1230	-	-	-	-	-	-	-
-	-	-	≤780	-	-	≥10	-	-	-	-
-	-	-	≤570	-	-	-	-	-	-	-
Carden wire 0.2-0.8 mm as supplied by GOST 3875-83 (samples)
-	-	-	2160-2350	-	-	-	-	-	-	-
-	-	-	2351-2550	-	-	-	-	-	-	-
Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
0.6-12	-	-	590-780	-	-	-	-	-	-	-
Rolled steel. Hardened in oil from 830 °C to + Vacation
-	200	≥1790	≥2200	≥4	-	-	-	≥30	≥61	-
Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
-	-	≥1370	≥1670	≥15	-	-	-	≥44	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	-	-	-	-	-	-	44-48	-
Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
0.6-12	-	-	490-780	-	-	-	-	-	-	-
Rolled steel. Hardened in oil from 830 °C to + Vacation
-	400	≥1450	≥1670	≥8	-	-	-	≥48	≥46	-
Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
-	-	≥1220	≥1370	≥19	-	-	-	≥52	-	-
Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
-	-	-	1270-1570	-	-	-	-	-	-	375-485
Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
0.6-3	-	-	≤1130	-	-	-	-	-	-	-
Rolled steel. Hardened in oil from 830 °C to + Vacation
-	600	≥850	≥880	≥15	-	-	-	≥51	≥30	-
Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
-	-	≥980	≥1000	≥20	-	-	-	≥70	-	-
Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
-	-	-	1580-1860	-	-	-	-	-	-	486-600
Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
3-5	-	-	≤980	-	-	-	-	-	-	-
Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
-	-	-	≥1860	-	-	-	-	-	-	≥600
Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
0.6-3	-	-	≤1230	-	-	-	-	-	-	-
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-1.5	-	-	≤640	-	≥15	-	-	-	-	-
1.5-4	-	-	≤740	-	≥10	-	-	-	-	-
0.1-1.5	-	-	≤630	-	≥15	-	-	-	-	-
1.5-4	-	-	≤630	-	≥11	-	-	-	-	-
0.1-4	-	-	740-1180	-	-	-	-	-	-	-
Hot-rolled sheet. After normalization
≤80	-	-	≥730	≥12	-	-	-	-	-	-
Flats on the other 14-1-4118-2004
	-	-	590-830	-	≥10	-	≥12	-	-	-
Rolled steel. Quenching in oil with 790-820 °C + Vacation at 550-580 °C, air cooling
40-60	-	≥690	≥880	≥8	-	-	-	≥30	30-35	-
Rolled steel. Quenching in oil from 800-820 °C + Vacation at 340-380 °C, air cooling
20	-	≥1220	≥1470	≥5	-	-	-	≥10	44-49	-
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Hardened in oil from 830 °C to + vacation at 470 °C
	-	≥785	≥980	≥8	-	-	-	≥30	-	-

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d₄	Elongation after rupture
d	Elongation after rupture
d₁₀	Elongation after rupture
y	The relative narrowing
HRC	Rockwell hardness (indenter diamond spheroconical)
HV	The Vickers hardness

Physical characteristics

Temperature	Е, HPa	G, HPa	r, kg/m³	l, W/(m · °C)	a, 10^-6 1/°C	С, J/(kg · °C)
0	215	84	7850	37	-	-
20	215	-	7850	37	-	-
100	213	83	7830	36	118	490
200	207	80	7800	35	126	510
300	200	77	-	34	132	525
400	180	70	7730	32	136	560
500	170	65	-	31	141	575
600	154	58	-	30	146	590
700	136	51	-	29	145	625
800	128	48	-	28	145	625
1000	-	-	-	-	118	705

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
G	Modulus of elasticity shear torsion
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity
a	The coefficient of linear expansion
С	Specific heat

Technological properties

Name	The value
Weldability	Does not apply to welded structures. KTS - no restrictions.
Склонность к отпускной хрупкости	Inclined when the content of Mn ≥ 1,0 %.
The temperature of forging	Start - 1250 °C, the end - 760-780 °C. the cooling of the workpiece cross-section up to 100 mm can be carried out in air, section 101-300 mm - mulde.
Flock-sensitive sensitivity	Insensitive.
Machinability	In the hardened and tempered condition, when blower SB 240 HB=820 MPa Kn TV.SPL.=0,85 Kn b.St.=0,80.