TU 14-4-70-72

MINISTRY OF FERROUS METALLURGY OF THE USSR

UDC 669.15−194−426−272.43
Group B73

ALLOY STEEL SPRING WIRE
TECHNICAL CONDITIONS
TU 14−4-70−72

Introduction term: 03/15/72

For up to: permanently

Audr 3552−82
Committee of standards
measuring instruments
USSR Council of Ministers
Registered «27» .06.78
According to the book of accounting for number 89 996

1972

These technical specifications apply to wire made of steel grades 50HFA-Sh and 662S2VA-Sh, smelted by the method of electroslag remelting. The wire is designed for cold winding springs.

1. CLASSIFICATION AND VARIETY

1.1. Classification and assortment of wire according to GOST 14963−69 with the following clarifications indicated in Table 1.

Table 1

steel grade	Surface finishing group	Wire diameter, mm	Accuracy class	Length
50HFA-Sh	A B C D	3.0−12.0	GT4	In bars no more than 4 m
65S2VA-Sh	IN	3.0−12.0	GT4	In bars, length according to GOST 14955−69
	D	3.0−12.0	GT4	In bars no more than 5 m
50HFA-Sh 65S2VA-Sh	H	0.5−12.0	GT4	In skeins

NOTES:

The group of surface finishing and the length of the rods within the limits specified in the table. 1 is specified in the order.
At the request of the customer, wire of group H with a diameter of 1.0 mm and more is supplied in coils of at least 10 kg.

2. TECHNICAL REQUIREMENTS

2.1. According to the technical requirements, the wire must comply with GOST 14963−69 with the following clarifications and additions indicated below.

2.2. The chemical composition of steel, with the exception of sulfur and phosphorus, must comply with:

for grade 50HFA-Sh — GOST 14963−69
for brand 65S2VA-Sh — GOST 14959−69
respectively as for the brand 50HFA and 65S2VA.

The content of sulfur and phosphorus should be no more than: sulfur — 0.015%, phosphorus 0.025%.

2.3. For wire with surface finish of group H with a diameter of 3.0 mm or less, the following additional requirements are established:

the total depth of one-sided decarburization should not exceed 1.5% of the diameter;
the ultimate tensile strength in the state of delivery of wire made of steel grade 65S2VA-Sh should not exceed 120 kgf / mm ² ;
the depth of occurrence of permissible defects should not exceed half of the maximum deviation in diameter.

2.4. The depth of occurrence of permissible defects for wire with surface finish of group H with a diameter exceeding 3.0 mm should not exceed the maximum deviation in diameter.

2.5. The depth of occurrence of permissible defects (clauses 2.3, 2.4) is calculated from the actual diameter of the wire.

3. TEST METHODS, LABELING, PACKAGING, TRANSPORTATION AND STORAGE

3.1. Test methods, marking, packaging, transportation and storage must comply with GOST 14963−69 with the following additions and clarifications:

winding test of wire of surface finish group H with a diameter of 3.0 mm and not less is performed on a rod with a diameter equal to twice the diameter of the test specimen;
in the state of delivery, a wire with a diameter of 6.0 mm and more is tested for hardness, and a wire with a diameter of less than 6.0 mm is tested for ultimate tensile strength;
wire material is designated: 50KhFA-Sh, 65S2VA-Sh.

Head laboratory of standardization I. Baryshev

The specified technical conditions were developed with the participation of:

Representatives from:

enterprises PO Box R-6209 — / Selyavo. A.L. /
enterprises PO Box A-1122 — / Akinshin A.V. /
enterprises PO Box B-2394 — / Gubarkov Yu.D. /
enterprises PO Box M-5603 — / Kudinov V.F. /
from the enterprise PO Box A-1950
Chief technologist — / Kireev B.A. /
Head of the Bureau of Standards — / Kukushkina E.V. /
Deputy shop manager 19 — / Lyubshin D.I. /

Copy is right

Appendix to TU

PAYMENT
wholesale prices for spring wire
grades 65S2VA-Sh and 50HFA-Sh

The wire is priced at the prices of 50HFA and 62S2Va wire in accordance with GOST 14963−69 (add. No. 18 to the price list 01−05) with additional surcharges to the wholesale price:

for increasing the requirements for the surface quality of the wire of the surface finishing group — Н 2%;
for additional requirements for the depth of the decarburized layer for wire 3 mm in size and below, group H — 2%
for ESR for steel grade 65S2VA — 309 rubles. for 1 ton; for steel grade 50XFA — 255 rubles. per 1 ton (price list No. 01−01 p. 408−409 and addition No. 20 to the price list 01−03 p. 13).

Copy is right
from customer

MINISTRY OF FERROUS METALLURGY OF THE USSR
NIIMETIZ

the USSR
Ministry
ferrous metallurgy
SOYUZMETIZ
Research
Institute of Hardware Products
NIIMETIZ

«24″. 03.1976
No. OT-2306
Magnitogorsk, 15 p / e.

Chelyabinsk region

Head of VIFS
Comrade Makarchuk I.N.
103001, Moscow, per. Shchusev, 4

AMENDMENT LETTER
to specifications TU 14−4-70−72
„Alloy steel spring wire“

The price calculation application has been revised.

Reason: Entry into force from 01.01.1976 price list No. 01−05 edition 1975, part 2.

Appendix: Calculation of wholesale prices on 7 sheets.

Head department of standardization I.V. Barysheva

Noted
22 / 04.76 g.

Appendix to TU 14−4-70−72

Calculation of wholesale prices for spring wire 50HFA-Sh, 65S2VA-Sh
groups A, B, C, D, H, accuracy GT4, according to TU 14−4-70−72.

The calculation was made on the basis of clause 13 of the „General instructions“ to the price list No. 01−05−1975, part 2.

1. Analog: wire in accordance with GOST 14963−69; 50KHFA, 65S2VA, groups D-1U and V-GT4.

(for group H — price list No. 01−05−1975, part 2, page 37, table 1.52)
(for groups A-G — price list No. 01−02−1974, part 1, page 114).

2. A list of differences in the quality requirements of wire according to TU 14−4-70−72 from the analogue, which are the basis for calculating surcharges and discounts:

No. PP TU	List of differences	Surcharge, discount (+) (-)	Justification of surcharges (discounts)
No. PP TU	List of differences	Surcharge, discount (+) (-)	Price List No.	P.
2.2.	Electroslag alloy steel is used: 50 KhFA-Sh, 65S2VA-Sh	Tsm	01−02. Part 1	184
	Lowered content limits sulfur by 0.015% (analogue 0.03%, TU-0.015%), phosphorus by 0.005% (analogue 0.03%, TU — 0.025%)	To the price of section steel or wire rod five 1	„ “	174 »
For wire of group «N»
2.3.	1.5% decarburized layer guarantee	2	«	182
3.1.a	Coiling test is mandatory	3	01−05. Part 2	64
For wire group
	A-1U	fifteen	01−02. Part 1	113
	B-1U	ten	«	«
	B-1U	five	«	«
	G-1U	2	«	«
	D-1	base

Total:

3. Calculation of wholesale prices for wire

Tsn = (Tsb ± Tsm x Ku) x (1 ± ) ± Pr

For brand 50HFA-Sh

Group A-1U
The price of 1 ton of section steel 50HFA dia. 5 mm — 206 rubles (Project 01−02, Part 1, page 40).
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 206 x 0.05 = 12 rubles.
The total price of section steel is 206 + 12 = 218 rubles.
Surcharge for remelting «W» (32% + 140 rubles; pr. 01−02. Part 1, p. 184)
P = 218 x 0.32 +140 = 210 rubles. — for diameters 3.0−4.8 mm.
For other wire diameters, the calculation is similar.

Group H
The price of 1 ton of wire rod 50HFA is 171 rubles. (Project 01−02. Ch1, add. 5).
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 171 x 0.06% = 10 rubles.
Surcharge for remelting «W» for dia. 4.0 mm (171 + 10) x 0.32 + 140 = 198 rubles.
The amount of surcharges P = 10 + 198 = 208 rubles.
P x Ku = 208 x 1.16 = 241 rubles.
Ku = 1.16 (pr. 0−1.-5. Part 1, p. 64).

For brand 65S2VA-Sh

Group A-1U
The price of 1 ton of section steel 65S2VA diam. 5 mm — 285 rubles. (Project 01−02, part 1, page 58)
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 285 x 0.06 = 17 rubles.
Total price of section steel 285 + 17 = 302 rubles.
Surcharge for remelting «W» (32% + 140 rubles)
P = 302 x 0.32 +140 = 237 rubles. — for diameters 3.0−4.8 mm.
P x Ku = 237 x 1.16 = 275 rubles. — (for group H).
For other wire diameters, the calculation is similar.

Group H
The price of 1 ton of wire rod 65S2VA is 244 rubles.
Surcharge for narrowing the limits of sulfur and phosphorus content 6% or 244 x 0.06 = 15 rubles.
Surcharge for remelting «W» for dia. 4.0 (244 + 15) x 0.32 + 140 = 233 rubles.
The amount of surcharges P = 15 + 223 = 238 rubles.
P x Ku = 238 x 1.16 = 276 rubles.

Table

Calculation of wholesale prices for wire according to TU 14−4-70−72

Diameter, mm	Base price, CB	Ks	Tsm x Ku x Ks	Ts ± Tsm x Ku x Ks gr. D-1U	Surcharge (discount) (+) (-)		Price in rub. for 1 t. Tsn	Price in rub. per 1 ton with rounding Tsn
Diameter, mm	Base price, CB	Ks	Tsm x Ku x Ks	Ts ± Tsm x Ku x Ks gr. D-1U	%	rub.	Price in rub. for 1 t. Tsn	Price in rub. per 1 ton with rounding Tsn
1	2	3	4	five	6	7	eight	nine
	Diam. grade. become		Wire 50HFA-Sh
Group A
3.0	5.0 206 + 800		12 + 210	1228	fifteen	184	1412	1410
3.2−3.5	«206 + 675		12 + 210	1103	«	165	1268	1270
3.8	«206 + 612		12 + 210	1040	«	156	1196	1200
4.0−4.5	«206 + 549		12 + 210	977	«	146	1126	1120
4.8	«206 + 531		12 + 210	959	«	144	1103	1100
5.0−5.5	5.5 197 + 513		12 + 207	929	«	139	1068	1070
6.0−6.5	6.0 188 + 495		11 + 204	898	«	135	1033	1030
7.0−7.5	7.0 175 + 468		11 + 203	867	«	130	997	997
8.0−8.5	9.0 177 + 441		11 + 200	829	«	124	953	953
9.0−9.5	«177 + 423		11 + 200	811	«	122	933	933
10−0-10.5	10.0 174 + 387		10 + 199	770	«	116	866	886
11.0−11.5	11.0 171 + 360		10 + 198	739	«	111	850	850
12.0	12.0 169 + 324		10 + 197	700	«	105	805	805
Group B
3.0	1228				ten	1233	1351	1350
3.2−3.5	1103				«	110	1213	1210
3.8	1040				«	104	1144	1140
4.0−4.5	977				«	98	1075	1080
4.8	959				«	96	1055	1060
5.0−5.5	929				«	93	1022	1020
6.0−6.5	898				«	90	988	988
7.0−7.5	867				«	87	954	954
8.0−8.5	829				«	83	912	912
9.0−9.5	811				«	81	892	892
10−0-10.5	770				«	77	847	847
11.0−11.5	739				«	74	813	813
12.0	700				«	70	770	770

continuation

1		2			3		4		five		6		7			eight		nine
Group B
3.0		1228			five			61			1289		1290
	3.2−3.5		1103			«		55				1158	1160
	3.8		1040			«		52				1092	1090
	4.0−4.5		977			«		49				1026	1030
	4.8		959			«		48				1007	1010
	5.0−5.5		929			«		46				975	975
	6.0−6.5		898			«		45				943	943
	7.0−7.5		867			«		43				910	910
	8.0−8.5		829			«		41				870	870
	9.0−9.5		811			«		41				852	852
	10−0-10.5		770			«		39				809	809
	11.0−11.5		739			«		37				776	776
	12.0		700			«		35				735	735
	Group D
	3.0		1228			2			25			1253		1250
	3.2−3.5		1103			«			22			1125		1130
	3.8		1040			«			21			1061		1060
	4.0−4.5		977			«			20			997		997
	4.8		959			«			nineteen			978		978
	5.0−5.5		929			«			nineteen			948		948
	6.0−6.5		898			«			18			916		916
	7.0−7.5		867			«			17			884		884
	8.0−8.5		829			«			17			946		846
	9.0−9.5		811			«			sixteen			827		827
	10−0-10.5		770			«			fifteen			785		785
	11.0−11.5		739			«			fifteen			754		754
	12.0		700			«			fourteen			714		714
	Group H
	0.50		1240	3.68				887		2127		five			106		2233	2230
	0.55		1150	3.41				822		1972		«			99		2071	2070
	0.60		1050	3.12				753		1803		«			90		1893	1890
	0.63		994	2.95				711		1705		«			85		1790	1790
	0.70		908	2.69				648		1556		«			78		1634	1630

continuation

1		2		3		4		five		6		7		eight		nine
0.80		811		2.41		581		1392		five		70		1462		1460
0.90		735		2.8		525		1260		«		63		1323		1320
	1.0		680		2.02		487		1167		«		58		1225		1230
	1.1		624		1.85		446		1070		«		54		1124		1120
	1,2		591		1.75		422		1013		«		51		1064		1060
	1.4		547		1.62		390		937		«		47		984		984
	1.6		503		1.49		359		862		«		43		905		905
	1.8		471		1.40		337		808		«		40		848		848
	2.0		448		1.33		321		769		«		38		807		807
	2.2		426		1.26		304		730		«		37		767		767
	2.5		404		1.20		289		693		«		35		728		728
	2.8		382		1.13		272		654		«		33		687		687
	3.0		371		1.10		265		636		«		32		668		668
	3.2		366		1.09		263		629		«		31		660		660
	3.5		355		1.05		253		608		«		thirty		638		638
	3.8		344		1.02		246		590		«		thirty		620		620
	4.0−12.0		337		1.05		241		578		«		29		607		607

	Diam. grade. become	Wire 65S2VA-Sh
Group B
3.0	5.0 285 + 800	17 + 237	1339	five	67	1406	1410
3.2−3.5	«285 + 675	17 + 237	1214	«	61	1275	1280
3.8	«285 + 612	17 + 237	1151	«	58	1209	1210
4.0−4.5	«285 + 549	17 + 237	1088	«	54	1142	1140
4.8	«285 + 531	17 + 237	1070	«	54	1124	1120
5.0−5.5	5.5 276 + 513	17 + 234	1040	«	52	10192	1090
6.0−6.5	6.0 267 + 495	16 + 231	1009	«	50	1059	1060
7.0−7.5	7.0 264 + 468	16 + 230	978	«	49	1027	1030
8.0−8.5	9.0 256 + 441	15 + 227	939	«	47	986	986
9.0−9.5	«256 + 423	15 + 227	921	«	46	967	967
10−0-10.5	10.0 253 + 387	15 + 226	881	«	44	925	925
11.0−11.5	11.0 250 + 360	15 + 225	850	«	43	893	893
12.0	12.0 248 + 324	15 + 224	811	«	41	852	852

continuation

1		2		3		4		five		6		7		eight		nine
Group D
3.0		1339		2		27		1366		1370
	3.2−3.5		1214		«		24		1238		1240
	3.8		1151		«		23		1174		1170
	4.0−4.5		1088		«		22		1110		1110
	4.8		1070		«		21		1091		1090
	5.0−5.5		1040		«		21		1061		1060
	6.0−6.5		1009		«		20		1029		1030
	7.0−7.5		978		«		20		998		998
	8.0−8.5		939		«		nineteen		958		958
	9.0−9.5		921		«		18		939		939
	10−0-10.5		881		«		18		899		899
	11.0−11.5		850		«		17		867		867
	12.0		811		«		sixteen		827		827
	Group H
	0.50		1330		3.16		872		2202		five		110		2315		2310
	0.55		1240		2.95		814		2054		«		109		2157		2160
	0.60		1140		2.71		748		1888		«		94		1982		1980
	0.63		1090		2.59		715		1805		«		90		1895		1900
	0.70		998		2.37		654		1652		«		86		1735		1740
	0.80		900		2.14		591		1491		«		75		1566		1570
	0.90		824		1.96		541		1365		«		68		1433		1430
	1.0		769		1.83		505		1278		«		64		1338		1340
	1.1		712		1.69		466		1178		«		59		1237		1240
	1,2		679		1.61		444		1123		«		56		1179		1180
	1.4		634		1.511		417		1051		«		53		1104		1100
	1.6		590		1.40		386		976		«		49		995		1030
	1.8		557		1.32		364		921		«		46		967		967
	2.0		534		1.27		351		885		«		44		929		929
	2.2		512		1.22		337		849		«		42		891		891
	2.5		489		1.16		320		809		«		40		849		849
	2.8		467		1.11		306		773		«		39		812		812
	3.0		455		1.08		298		753		«		38		791		791
	3.2		450		1.07		295		745		«		37		782		782
	3.5		439		1.04		287		726		«		36		762		762

continuation

1	2	3	4	five	6	7	eight	nine
3.8	428	1.02	282	710	five	36	749	743
4.0−12	421	1.0	276	697	«	35	732	732

Note. Wire according to TU 14−4-70−72 is subject to «General instructions» to price list No. 01−05−1975, part 2.

APPROVED BY

with the manufacturer

20.10.80 g.

AGREED

with the base organization
standardization

17.11.80 g.

with the customer

04.09.80 g.

Right:

04/08/81

UDC

Group B73

USSR Ministry of Standards
Registered and entered in the register
state registration
81.05.13. No. 215333

STEEL WIRE
ALLOY SPRING

TECHNICAL CONDITIONS
TU 14−4-70−72

Notice 2

The term of introduction is from 01.06.81.

1. In the introductory part, the designation of the brand «50XFA-Sh» shall be replaced by «51XFA-Sh».

2. To make the following changes in paragraph 1.1:

— in table 1, in the column «Steel grade» in two cases, the brand «50XFA-Sh» shall be replaced by «51XFA-Sh»;
— in the column «Surface finishing group» in the second line, add the group «B»;
— change the name of the column «Accuracy class» to «Manufacturing accuracy» and put the word «normal» in all lines of the column;
— the column «Length» shall be excluded;
— Note 1. Delete the words «and the length of the rods (within the limits specified in Table 1);
— note 2 to table. 1 shall be stated in the wording: «At the request of the customer, wire of group H with diameters of 1.0 mm and more is supplied in coils weighing at least 10 kg. It is allowed to supply wire in coils weighing in accordance with GOST 14963−78 in an amount not exceeding 10% of the batch weight. «

3. Clause 2.2 shall be stated in the wording:

«The chemical composition of steel, with the exception of sulfur and phosphorus, must comply with GOST 14959−79. The sulfur content should be no more than 0.015%, the phosphorus content — no more than 0.025%.

4. Clause 3.1, sub-clause «b» shall be deleted; in subparagraph «c» steel grade 50HFA-Sh shall be replaced by 51HFA-Sh.

5. To supplement the technical conditions with the note «Prices are indicated in Appendix 2».

6. In clauses 1.1; 2.1; 3.1 replace references from GOST 14963−69 to GOST 14963−78.

7. On the title page of the TU in the left part of field 2, put the OKP code 12 2100.

Registered
March 2, 1981

Head department of standardization
and the quality of Research Institute of Metiz I. V. Barysheva

TU 14−4-70−72
with notice No. 2

Appendix 2
Mandatory

Wholesale prices for steel wire
alloy spring

Alloy steel spring wire, surface finish G		Range and technical requirements of TU 14−4-70−72 with notice No. 2
Diameter, mm	Wholesale price in rubles per ton of wire and steel grades
	51HFA-Sh		65S2VA-Sh
1.00−1.10	6680		6500
1.20−1.25	5240		5120
1.40−1.60	3680		3600
1.80-	2710		2690
2.00	2320		2470
2.20	2000		2010
2.50	1690		1740
2.80−3.00	1460		1530
3.20−3.50	1290		1360
3.80	1220		1270
4.00−4.50	1110		180
4.80	1090		1160
5.00−5.50	1010		1120
5.60	980		1090
6.00−6.30	968		1080
7.00−7.50	927		1040
8.00−8.50	883		987
9.00−9.50	852		962
10.0	798		907
11.0−11.50	756		864
12.00−12.50	703		811
13.0	674		797
14.0	645		754

For wire of other groups of surface finishing, wholesale prices are estimated based on the wholesale price of wire of surface group D of the same size and grade with surcharges,%

Surface finishing group	Surcharges,%
AND	sixteen
B	ten
IN	five
D	base

Alloy steel spring wire, surface finish H		Range and technical requirements of TU 14−4-70−72 with notice No. 2
Diameter, mm	Wholesale price in rubles per ton of wire and steel grades
	51HFA-Sh		65S2VA-Sh
0.50	2320		2380
0.56	2110		2190
0.60	1960		2040
0.63	1860		1950
0.71	1690		1780
0.80	1520		1610
0.90	1370		1480
1.00	1270		1380
1.10	1170		1280
1.20	1110		1220
1.25	1080		1190
1.30	1060		1170
1.40	1020		1140
1.50	982		1100
1.60	941		1060
1.80	881		999
2.00	838		957
2.20	797		918
2.50	756		877
2.80	715		837
3.00	694		816
3.20	685		807
3.50	664		787
3.80	644		768
4.00−14.00	630		755

Note: for steel alloy spring wire in accordance with TU 14−4-70−72 with notice No. 2 «General instructions» apply to the price list No. 01−05−1975, part 2

Head price laboratory 02/27/88
VNIImetiza V.A. Serkin

Approved

with the manufacturer

April 26, 1982

with the base organization
standardization

March 23, 1982

Agreed

with the customer

April 15, 1982

Right:

UDC

Group B73

STEEL WIRE
ALLOY SPRING

TECHNICAL CONDITIONS
TU 14−4-70−72

Change 3

The term of introduction is from 01.06.81.

1. The term of validity of the technical conditions has been extended to 01.07.87.

2. In paragraph 2.3, subparagraph b) shall be stated in the wording:

«B) the ultimate tensile strength in the state of delivery of wire made of steel grade 65S2VA-Sh should not exceed 1180 n / mm2 (120 kgf / mm2)».

STATE COMMITTEE
USSR STANDARDS
Registered and entered in the register
state registration
82.06.11 No. 89996/03

Registered
base organization

on standardization
May 4, 1982

TU 14-4-70-72

Calculation of wholesale prices for wire according to TU 14−4-70−72

Specifications (TU)

Our consultant will save your time

Subscription

TU 14-4-70-72

Calculation of wholesale prices for wire according to TU 14−4-70−72

Payment ON-LINE

Specifications (TU)

Our consultant will save your time

Subscription