Wire

CHQ (Cold Heading Quality) Wire

Application

- Automotive Components

- Construction Bolt

- Machinery Components

- Electronic Parts

- Engine Parts & Bolt

- Piston Pin

- Spark Plug

- Ball Housing

- Brake System Parts

- Bolt & Nut

Hard Drawn Steel Wire

Tensile Strength(N/mm2)
Nominal Diameter (mm)	SW - A	SW - B	SW - C
0.50	1620 ~ 1910	1910 ~ 2210	2210 ~ 2500
0.55	1570 ~ 1860	1860 ~ 2160	2160 ~ 2450
0.60	1570 ~ 1810	1810 ~ 2110	2110 ~ 2400
0.65	1570 ~ 1810	1810 ~ 2110	2110 ~ 2400
0.70	1520 ~ 1770	1770 ~2060	2060 ~ 2350
0.80	1520 ~ 1770	1770 ~2010	2010 ~ 2350
0.90	1520 ~ 1770	1770 ~ 2010	2010 ~ 2260
1.00	1470 ~ 1720	1720 ~ 1960	1960 ~ 2210
1.20	1420 ~ 1670	1670 ~ 1910	1910 ~ 2160
1.40	1370 ~ 1620	1620 ~ 1860	1860 ~ 2110
1.60	1320 ~ 1570	1569 ~ 1815	1815 ~ 2060
1.80	1270 ~ 1520	1520 ~ 1770	1770 ~ 2010
2.00	1270 ~ 1470	1470 ~ 1720	1720 ~ 1960
2.30	1230 ~ 1420	1420 ~ 1670	1670 ~ 1910
2.60	1230 ~ 1420	1420 ~ 1670	1670 ~ 1910
2.90	1180 ~ 1370	1370 ~ 1620	1620 ~ 1860
3.20	1180 ~ 1370	1370 ~ 1570	1570 ~ 1810
3.50	1180 ~ 1370	1370 ~ 1570	1570 ~ 1770
4.00	1180 ~ 1370	1370 ~ 1570	1570 ~ 1770
4.50	1130 ~ 1320	1320 ~ 1520	1520 ~ 1720
5.00	1130 ~ 1320	1320 ~ 1520	1520 ~ 1720
5.50	1080 ~ 1270	1270 ~ 1470	1470 ~ 1670
6.00	1030 ~ 1230	1230 ~ 1420	1420 ~ 1620
6.50	1030 ~ 1230	1230 ~ 1420	1420 ~ 1620
7.00	980 ~ 1180	1180 ~ 1370	1370 ~ 1570
8.00	980 ~ 1180	1180 ~ 1370	1370 ~ 1570
9.00	930 ~ 1130	1130 ~ 1320	1320 ~ 1520
10.00	930 ~ 1130	1130 ~ 1320	1320 ~ 1520
11.00	-	1080 ~ 1270	1270 ~ 1470
* Regarding an intermediate diameter, the value of the larger diameter than this shall be used.
* Sizes of under 0.50mm are omitted.

Class, Symbol and Applicable Size Range

Class	Symbol	Applied Wire Diameter	Remark
Hard Drawn Steel Wire Class A	SW - A	0.08mm or over up to and incl. 10.0mm	-
Hard Drawn Steel Wire Class B	SW - B	0.08mm or over up to and incl. 13.0mm	Mainly for spring receiving, principally static load
Hard Drawn Steel Wire Class C	SW - C

Piano Wire & Silver Wire

Tensile Strength of Piano, Silver Wire(N/mm2)
Nominal Diameter (mm)	SPW - 1	SPW - 2	SILVER - A	SILVER - B
0.50	2300 ~ 2550	2550 ~ 2790
0.55	2600 ~ 2500	2500 ~ 2750	2260 ~ 2450
0.60	2100 ~ 2450	2450 ~ 2700	2260 ~ 2450
0.65	2100 ~ 2450	2450 ~ 2700	2210 ~ 2400
0.70	2160 ~ 2400	2400 ~ 2650	2210 ~ 2400
0.80	2110 ~ 2350	2350 ~ 2600	2160 ~ 2350	2310 ~ 2500
0.90	2110 ~ 2300	2300 ~ 2500	2110 ~ 2300	2260 ~ 2450
1.00	2060 ~ 2260	2260 ~ 2450	2060 ~ 2260	2210 ~ 2400
1.20	2010 ~ 2210	2210 ~ 2400	2010 ~ 2210	2160 ~ 2300
1.40	1960 ~ 2160	2160 ~ 2350	1960 ~ 2160	2110 ~ 2300
1.60	1910 ~ 2110	2110 ~ 2300	1910 ~ 2110	2060 ~ 2260
1.80	1860 ~ 2060	2060 ~ 2260	1860 ~ 2060	2010 ~ 2200
2.00	1810 ~ 2010	2010 ~ 2210	1810 ~ 1960	1960 ~ 2110
2.30	1770 ~ 1960	1960 ~ 2160	1770 ~ 1960	1910 ~ 2110
2.60	1770 ~ 1960	1960 ~ 2160	1770 ~ 1860	1910 ~ 2060
2.90	1720 ~ 1910	1910 ~ 2110	1720 ~ 1860	1810 ~ 1960
3.20	1670 ~ 1860	1860 ~ 2060	1670 ~ 1860	1810 ~ 1960
3.50	1670 ~ 1810	1810 ~ 1960	1670 ~ 1810	1770 ~ 1910
4.00	1670 ~ 1810	1810 ~ 1960	1670 ~ 1810	1770 ~ 1910
4.50	1620 ~ 1770	1770 ~ 1910	1620 ~ 1770	1720 ~ 1860
5.00	1620 ~ 1770	1770 ~ 1910	1620 ~ 1770	1720 ~ 1860
5.50	1570 ~ 1710	1710 ~ 1860	1570 ~ 1720	1670 ~ 1810
6.00	1520 ~ 1670	1670 ~ 1810	1520 ~ 1670	1620 ~ 1770
6.50	1520 ~ 1670	1670 ~ 1810	1470 ~ 1620	1620 ~ 1770
7.00	1470 ~ 1620	1620 ~ 1770	1420 ~ 1570	1570 ~ 1720
8.00	1470 ~ 1620		1370 ~ 1520	1470 ~ 1620
9.00	1420 ~ 1570		1320 ~ 1470
10.00	1420 ~ 1570		1280 ~ 1420
* Regarding an intermediate diameter, the value of the larger diameter than this shall be used. * Sizes of under 0.50mm are omitted.

Classes, Symbols and Applied Wire Diameters

Class	Symbol	Applied Wir Diameter	Application
Piano Wire, Class A	SPW - 1	0.08mm or over up to and incl. 10.0mm	For Spring receiving principally dynamic load
Piano Wire, Class B	SPW - 2	0.08mm or over up to and incl. 7.0mm

Low P.C. Wire & Strand

Standard	Symbol	Designation	Nominal	Tolerance of Dia.	Difference between diameters of core wire and side wire (mm)	Breaking Load		Yield Load
			Diameter	(mm)		KN (Min)	Kgf (Min)	KN (Min)	Kgf (Min)
			(mm)
KS D 7002 (JIS G3536)	SWPC 2 (SWPR 2)	2.9mm 2 Wire Strand	2.9	±0.3	-	25.5	2.600	22.6	2.304
	SWPD 3 (SWPD 3)	2.9mm 3 Wire Strand	2.9		-	38.2	3.895	33.8	3.446
	SWPC 7A (SWPR 7A)	7 Wire Strand 6.2mm	6.2	+ 0.4/ -0.2	Min. 0.03	40.2	4.100	33.8	3.446
		7 Wire Strand 7.9mm	7.9	+ 0.4/ -0.2	Min. 0.04	64.7	6.597	54.9	5.598
		7 Wire Strand 9.3mm	9.3	+ 0.4/ -0.2	Min. 0.05	88.8	9.055	75.5	7.698
		7 Wire Strand 10.8mm	10.8	+ 0.4/ -0.2	Min. 0.07	120	12.236	102	10.401
		7 Wire Strand 12.4mm	12.4	+ 0.4/ -0.2	Min. 0.08	160	16.315	136	13.868
		7 Wire Strand 15.2mm	15.2	+ 0.4/ -0.2	Min. 0.08	240	24.473	204	20.802
	SWPC 7B (SWPR 7B)	7 Wire Strand 9.5mm	9.5	+ 0.4/ -0.2	Min. 0.05	102	10.401	86.8	8.851
		7 Wire Strand 11.1mm	11.1	+ 0.4/ -0.2	Min. 0.07	138	14.072	118	12.032
		7 Wire Strand 12.7mm	12.7	+ 0.4/ -0.2	Min. 0.08	183	18.660	156	15.907
		7 Wire Strand 15.2mm	15.2	+ 0.4/ -0.2	Min. 0.08	261	26.614	222	22.637

Standard	Symbol	Designation	Elongation	Relaxation Value 1000h (B.L * 70%) Max.		Nominal cross- Sectional Area	Unit mass	Pitch
			Min. (%)				(Kg/Km)	No.
				N	L	(mm2)		(mm)
KS D 7002 (JIS G3536)	SWPC 2 (SWPR 2)	2.9mm 2 Wire Strand	3.5	8.0	2.5	13.21	104	24 ~ 32
								69.6 ~ 92.8
	SWPC 3 (SWPR 3)	2.9mm 3 Wire Strand	3.5	8.0	2.5	19.82	156	24 ~ 32
								69.6 ~ 92.8
	SWPC 7A (SWPR 7A)	7 Wire Strand 6.2mm	3.5	8.0	2.5	23.23	182	12 ~ 18
								74.4 ~ 111.6
		7 Wire Strand 7.9mm	3.5	8.0	2.5	37.42	293	12 ~ 18
								94.8 ~ 142.2
		7 Wire Strand 9.3mm	3.5	8.0	2.5	51.61	405	12 ~ 18
								111.6 ~ 167.4
		7 Wire Strand 10.8mm	3.5	8.0	2.5	69.68	546	12 ~ 18
								129.6 ~ 223.2
		7 Wire Strand 12.4mm	3.5	8.0	2.5	92.9	729	12 ~ 18
								148.8 ~ 198.4
		7 Wire Strand 15.2mm	3.5	8.0	2.5	138.7	1101	12 ~ 18
								182.4 ~ 273.6
	SWPR 7B (SWPR 7B)	7 Wire Strand 9.5mm	3.5	8.0	2.5	54.84	432	12 ~ 18
								114 ~ 171
		7 Wire Strand 11.1mm	3.5	8.0	2.5	74.19	580	12 ~ 18
								133.2 ~ 199.8
		7 Wire Strand 12.7mm	3.5	8.0	2.5	98.71	774	12 ~ 18
								152.4 ~ 228.6
		7 Wire Strand 15.2mm	3.5	8.0	2.5	138.8	1101	12 ~ 18
								182.4 ~ 273.6

Unbonded P.C. Stand

Low P.C Strand and Galvanized P.C Strand are coated with High Density Polyethylene(H.D.P.E) and Grease is filled inside, which provides the superb anti-corrosion

Nominal Diameter (mm)	Nominal Diameter of Unbonded P.C Strand(mm)	H.D.P.F Thickness(mm)	Grease Coating Weight(g/m)	Unit Weight (Kg/Km)
12.7	15.7 ~ 16.5	1.0 ~ 1.25	Min.35	865
15.2	17.8 ~ 18.9	1.0 ~ 1.25	Min.45	1,210

Standard	Grade	Nominal	Permissible Variations in Diameter	Difference between diameters of core wire and side wire		Breaking Strength		Load at 1% Extension
		Diameter
						(Min)		N Relaxation		K Relaxation
		(mm)	(mm)	(mm)		KN	Kgf	KN	Kgf	KN	Kgf
ASTM A416	Grade 250	6.35	±0.40	0.0254	0.0254	40.0	4.078	34.0	6,467	36.0	3,670
		7.94	±0.40	0.0381	0.0381	64.5	6.577	54.7	5,577	58.1	5,924
		9.53	±0.40	0.0508	0.0508	89.0	9.075	75.6	7,709	80.1	8,167
		11.11	±0.40	0.0635	0.0635	120.1	12.246	102.3	10,431	108.1	18,023
		12.7	±0.40	0.0672	0.0672	160.1	16.335	136.2	13,888	144.1	14,694
		15.24	±0.40	1.1016	1.1016	240.2	24.493	204.2	20,822	216.2	22,046
	Grade 270	9.53	+0.65, -0.15	0.0508	0.0508	102.3	10.431	87.0	8,871	92.1	9,391
		11.11	+0.65, -0.15	0.0635	0.0635	137.9	14.061	117.2	11,951	124.1	12,654
		12.7	+0.65, -0.15	0.0762	0.0762	183.7	18.732	156.1	15,917	165.3	16,855
		15.24	+0.65, -0.15	0.1016	0.1016	260.7	26.584	221.5	22,586	234.6	23,922

Standard	Grade	Elongation(%) Min	Relaxation Value (1000h)% Max		Steel Area (mm2)	Weight of Strand (kg/Km)	Pitch(No.)
			70%	80%
ASTM A416	Grade 250	3.5	2.5	3.5	23.22	182	12 ~ 16
		3.5	2.5	3.5	37.42	294	12 ~ 16
		3.5	2.5	3.5	51.61	405	12 ~ 16
		3.5	2.5	3.5	69.68	548	12 ~ 16
		3.5	2.5	3.5	82.90	730	12 ~ 16
		3.5	2.5	3.5	139.35	1094	12 ~ 16
	Grade 270	3.5	2.5	3.5	54.45	432	12 ~ 16
		3.5	2.5	3.5	74.19	582	12 ~ 16
		3.5	2.5	3.5	98.71	775	12 ~ 16
		3.5	2.5	3.5	140.00	1102	12 ~ 16

Wire Rope

6 x 7

Rope Dia.		Minimum Breaking Load (Metric Tons)					Approx. Weight (kg/100m)
mm	inch	Grade G (1,470N/mm2)	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)	IPS	EIPS
(7.94)	5/16				3.72	4.09	22.32
8		3.45	3.88	4.24			22.32
(9.53)	3/8				5.31	5.85	31.25
10		5.39	6.06	6.63			37.10
(11.11)	7/16				7.19	7.91	43.16
(12.7)	1/2				9.34	10.3	56.55
14		10.6	11.9	13.0			71.43
(14.29)	9/16				11.8	13.0	71.43
(15.88)	5/8				14.4	16.0	87.80
16		13.8	15.5	17.0			87.80
18		17.5	19.6	21.5			120.0
(19.05)	3/4				20.6	22.6	125.0
20		21.5	24.2	26.5			148.0
(22.23)	7/8				27.8	30.7	171.1
22.4		27.0	30.4	33.2			173.8
25		33.7	37.9	41.4			223.2
(25.4)	1				36.0	39.7	223.2
28		42.2	47.5	51.9			282.8
(28.58)	1 1/8				45.2	49.8	282.8
30		48.5	54.6	59.6			334.0
31.5		53.4	60.2	65.8			342.8
(31.75)	1 1/4				55.4	60.9	442.6
33.5		60.4	68.0	74.3			416.0
(34.39)	1 3/8				66.3	72.9	422.6
35.5		67.8	76.4	83.4			467.0
37.5		75.7	85.3	93.1			522.0
(38.1)	1 1/2				78.2	86.0	503.0
40		86.2	97.1	105.9			593.0
42.5		97.3	109.6	119.6			670.0

6 x 19

Rope Dia.	Minimum Breaking Load (Metric Tons)						Approx. Weight (kg/100m)
	FC			IWRC
mm	Grade G (1,470N/mm2)	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)	Grade G (1,470N/mm2)	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)	FC	IWRC
8	3.28	3.53	3.76	3.52	3.87	4.22	24.41	26.79
10	5.12	5.51	5.88	5.49	6.04	6.59	36.40	40.40
11.2	6.43	6.91	7.38	6.89	7.58	8.27	48.39	52.94
12	7.38	7.93	8.47	7.91	8.70	9.49	52.40	58.20
12.7	8.13	8.74	9.34	8.72	9.59	10.5	62.50	68.46
14	10.0	10.8	11.5	10.8	11.8	12.9	78.87	87.80
16	13.1	14.1	15.1	14.1	15.5	16.9	98.22	107.2
18	16.6	17.8	19.1	17.8	19.6	21.4	118.0	131.0
20	20.5	22.0	23.5	22.0	24.2	26.4	146.0	162.0
22.4	25.7	27.6	29.5	27.6	30.3	33.1	194.9	214.6
24	29.5	31.7	33.9	31.6	34.8	38.0	210.0	233.0
25	32.0	34.4	36.8	34.3	37.8	41.2	250.0	275.3
25.4	33.0	35.5	37.9	35.4	39.0	42.5	250.0	275.3
26	34.6	37.2	39.8	37.1	40.8	44.6	262.0	288.5
28	40.2	43.2	46.1	43.1	47.4	51.7	317.0	348.2
30	46.1	49.6	52.9	49.4	54.4	59.3	328.0	364.0
32	52.5	56.4	60.2	56.2	61.9	67.5	391.4	430.1
34	59.2	63.7	68.0	63.5	69.8	76.2	421.0	467.0
35	62.8	67.5	72.1	67.3	74.0	80.7	473.2	520.9
36	66.4	71.4	76.2	71.2	78.3	85.4	491.8	543.0
38	74.0	79.5	84.9	79.3	87.2	95.2	562.5	619.1
40	82.0	88.1	94.1	87.9	96.7	105	582.0	646.0

6 x 24

Rope Dia.	Minimum Breaking Load (Metric Tons)			Approx. Weight (kg/100m)
mm	Grade G (1,470N/mm2)	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)
8	2.98	3.21	3.50	21.20
9	3.77	4.06	4.43	26.90
10	4.65	5.02	5.47	33.20
11.2	5.83	6.30	6.87	42.28
12	6.70	7.23	7.88	47.80
12.5	7.29	7.85	8.55	52.09
14	9.12	9.48	10.7	65.10
16	11.9	12.8	14.0	80.36
18	15.1	16.3	17.7	108.0
20	18.6	20.1	21.9	133.0
22.4	23.3	25.2	27.5	167.0
24	26.8	28.9	31.5	191.0
25	29.1	31.4	34.2	205.4
28	36.5	39.3	42.9	260.4
30	41.9	45.2	49.3	299.0
31.5	46.3	49.9	54.4	316.4
33.5	52.4	56.4	61.5	373.0
35.5	58.8	63.3	69.1	399.6
37.5	65.7	70.7	77.1	467.0
40	74.4	80.3	87.6	532.0
42.5	84.3	90.8	98.9	600.0
45	94.5	102	111	672.0
47.5	105	113	124	749.0
50	116	125	137	821.5
52	126	136	148	898.0
54	136	146	160	968.0
56	146	157	172	1,040
58	156	169	184	1,116
60	167	181	197	1,200
63	185	199	217	1,320
63.5	188	202	221	1,340
74	255	275	300	1,819
76.2	270	291	318	1,929

6 x 37

Rope Dia.	Minimum Breaking Load (Metric Tons)						Approx. Weight (kg/100m)
	FC			IWRC
mm	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)	Grade C (1,910N/mm2)	Grade A (1,620N/mm2)	Grade B (1,770N/mm2)	Grade C (1,910N/mm2)	FC	IWRC
8	3.47	3.70	4.01	3.71	4.05	4.39	24.41	26.79
9	4.39	4.68	5.07	4.69	5.12	5.55	29.10	32.30
10	5.42	5.78	6.26	5.79	6.32	6.85	35.90	39.80
11.2	6.80	7.25	7.86	7.27	7.93	8.59	48.39	52.94
12	7.81	8.33	9.02	8.34	9.10	9.86	51.70	57.40
12.5	8.46	9.02	9.79	9.05	9.87	10.7	62.50	68.46
14	10.6	11.3	12.3	11.4	12.4	13.4	78.87	87.80
16	13.9	14.8	16.0	14.8	16.2	17.5	98.22	107.2
18	17.6	18.7	20.3	18.8	20.5	22.2	116.0	129.0
20	21.7	23.1	25.1	23.2	25.3	27.4	144.0	160.0
22.4	27.2	29.0	31.4	29.1	31.7	34.4	192.0	211.3
24	31.2	33.3	36.1	33.4	36.4	39.4	207.0	230.0
25	33.9	36.1	39.2	36.2	39.5	42.8	250.0	275.3
28	42.5	45.3	49.1	45.4	49.5	53.7	317.0	348.2
30	48.8	52.0	56.4	52.1	56.9	61.6	323.0	359.0
31.5	53.7	57.3	62.2	57.5	62.7	67.9	357.0	396.0
33.5	60.8	64.9	70.3	65.0	71.0	76.8	403.0	447.0
35.5	68.2	72.8	78.9	73.0	79.6	86.3	481.0	530.5
37.5	76.2	81.2	88.0	81.5	88.9	96.3	544.1	599.3
40	86.8	92.5	100	92.7	101	110	575.0	638.0
42.5	97.8	104	113	104	114	124	676.6	743.6
45	110	117	127	118	128	139	785.5	864.8
47.5	122	131	142	130	143	155	811.0	900.0
50	136	145	157	145	158	171	1,000	1,100
53	152	162	176	163	178	192	1,106	1,236
56	170	181	196	182	198	215	1,140	1,270
60	195	208	226	209	228	246	1,290	1,430
63	215	230	249	230	251	272	1,430	1,590
74	297	317	343	317	346	375	1,968	2,172
76.2	315	336	364	336	367	398	2,247	2,470