Steel 60S2A

Designation

Name	The value
Designation GOST Cyrillic	60С2А
Designation GOST Latin	60C2A
Transliteration	60S2A
By chemical elements	60С2

Description

Steel 60S2A used: for the manufacture of hot rolled plates; heavy-duty springs, torsion shafts, spring rings and washers, collets, friction discs, washers; spring persistent flat internal eccentric rings used for fixation of the parts in the housings to +200 °C; cold-rolled heat-treated ribbon with a thickness of 0.05 to 1.30 mm and 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.

Note

Steel spring alloy of high quality.

Standards

Name	Code	Standards
Sheets and strips	В23	GOST 103-2006
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 14-1-5416-2001, TU 3-761-80, TU 14-1-2118-77, TU 14-1-501-73, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Wire, steel, alloy	В73	GOST 14963-78
Tape	В34	GOST 2283-79, GOST 21996-76, GOST 21997-76, TU 14-1-2992-80
Steel wire medium and high carbon	В72	GOST 26366-84
Sheets and strips	В33	GOST 4405-75, TU 14-1-1123-74, TU 14-1-1409-75, TU 14-1-1986-77, TU 14-1-2108-77, TU 14-234-61-89, TU 14-130-278-96
Classification, nomenclature and General rules	В20	OST 1 90005-91
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1213-75

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu
TU 14-1-1123-74	0.58-0.63	≤0.025	≤0.025	0.6-0.9	≤0.3	1.6-2	≤0.25	Rest	≤0.2
GOST 14959-79	0.58-0.63	≤0.025	≤0.025	0.6-0.9	≤0.3	1.6-2	≤0.25	Rest	≤0.2

Fe is the basis.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄	y, %	KCU, kJ/m²	HB, MPa	HRC	HV, MPa
Tape cold-rolled heat-treated (0,05-1,30 mm) for spring parts and springs according to GOST 21996-76 and flattened strip (0,15-2,00 mm) according to GOST 21997-76 (listed group strength tape)
-	-	-	1270-1570	-	-	-	-	-	-	375-485
-	-	-	1580-1860	-	-	-	-	-	-	486-600
-	-	-	≥1860	-	-	-	-	-	-	≥600
Rolled steel. Quenching in oil from 850 °C + Vacation
-	300	≥1960	≥2160	≥2	-	≥36	≥98	≥462	-	-
The rod 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C (extract 3 hours). NV=340-364 at 20 °C
-	-	≥1090	≥1270	11-13	-	≥33	≥235	-	-	-
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	-	1520-1770	-	-	-	-	-	44-48	-
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-4	-	-	780-1180	-	-	-	-	-	-	-
Rolled steel. Quenching in oil from 850 °C + Vacation
-	400	≥1470	≥1670	≥7	-	≥39	≥177	≥425	-	-
The rod 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C (extract 3 hours). NV=340-364 at 20 °C
-	-	≥930	≥1220	≥15	-	≥44	≥422	-	-	-
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-4	-	-	≤880	-	≥8	-	-	-	-	-
Rolled steel. Quenching in oil from 850 °C + Vacation
-	500	≥1080	≥1290	≥10	-	≥42	≥285	≥340	-	-
The rod 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C (extract 3 hours). NV=340-364 at 20 °C
-	-	≥820	≥950	≥19	-	≥71	≥432	-	-	-
Rolled steel. Quenching in oil from 850 °C + Vacation
-	600	≥730	≥1030	≥17	-	≥48	≥235	≥298	-	-
The rod 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C (extract 3 hours). NV=340-364 at 20 °C
-	-	≥510	≥590	≥23	-	≥87	≥422	-	-	-
Rolled steel. Quenching in oil from 860 °C to + Vacation at 425 °C
-	-	≥1570	≥1710	≥10	-	≥46	≥314	-	-	-
-	-	≥1370	≥1670	≥13	-	≥40	≥334	-	-	-
Sheet hot-rolled thin (0.5-3.9 mm). Without termoobrabotki - supplied
0.5-3.9	-	-	≤931	≥13	-	-	-	-	-	-
Rolled steel. Quenching in oil from 860 °C to + Vacation at 425 °C
-	-	≥1270	≥1570	≥20	-	≥58	-	-	-	-
Sheet. Isothermal annealing with 860-880 °C in molten salt (tсоли=310-330 °C) + vacation at 310-330 °C, air cooling
≤10	-	≥1570	≥1770	≥12	-	≥50	≥608	-	47-50	-
Rolled steel. Quenching in oil from 860 °C to + Vacation at 425 °C
-	-	≥1080	≥1220	≥22	-	≥71	-	-	-	-
Wire with special surface finishes for the manufacture of springs cold-wound in the delivery condition according to GOST 14963-78
0.5-14	-	-	≤1030	-	-	-	-	-	-	-
Spring. Wrapped at 850-950 °C. Quenching in oil from 850 -870 °C + Vacation at 430-460 °C, air cooling
-	-	-	-	-	-	-	-	388-477	-	-
Spring. Quenching in oil with 850-870 °C + Vacation at 400-450 °C, air cooling
-	-	-	-	-	-	-	-	387-418	-	-
Rolled steel. Quenching in oil from 870 °C to + Vacation at 470 °C
≤80	-	≥1324	≥1471	≥6	-	≥25	-	-	-	-
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 870 °C to + Leave at 420 °C
	-	≥1375	≥1570	≥6	-	≥20	-	≤241	-	-

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
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
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	212	82	7680	28	-	-
20	212	-	7680	28	-	-
100	206	80	7660	29	118	510
200	198	77	7630	29	127	510
300	192	74	7590	30	133	520
400	181	69	7570	30	137	535
500	178	68	7520	30	141	565
600	158	60	-	29	145	585
700	144	54	-	29	144	620
800	134	50	-	28	144	620
1000	-	-	-	-	122	700

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

Technological properties

Name	The value
Weldability	Does not apply to welded structures.
Склонность к отпускной хрупкости	Tend not.
The temperature of forging	Start - 1200 °C, the end - of 800 °C. the cooling of the workpiece cross-section up to 250 mm in the air, 251-300 mm - in the pit.
Flock-sensitive sensitivity	not sensitive.
Machinability	In hot-rolled condition at 270-320 HB and blower SB=1080 MPa Kn TV.SPL.=0,70 Kn b.St.=0,27.