Copper Clad Steel Wire

What is Copper Clad Steel Wire?

Copper clad steel wire (CCS) is a composite wire material that combines the conductivity of copper with the strength and durability of steel. It consists of a steel core surrounded by a thin layer of copper. The result is a wire that provides the mechanical properties of steel, such as high tensile strength and resistance to stretching or breaking, along with the superior electrical conductivity of copper.

Copper Clad Steel Standard

ASTM B298 – Standard Specification for Copper-Clad Steel Wire for Electrical Conductors

ASTM B802 – Standard Specification for Copper-Clad Steel Wire Strand

ASTM B689 – Standard Specification for Copper-Clad Steel Wire for Use in Telecommunications

Copper Clad Steel Technical Parameters

Stranded Bare Copper-Clad Steel
Misurare (NO. – Awg)	Diameter	Breaking Load*			Weight	Resistance
	Diameter	High Strength (HS)		Extra-High Strength (EHS)	Weight	Ohms Per km at 68˚F
	mm	40% Conductivity (kN)	30% Conductivity (kN)	30% Conductivity (kn)	kg per km	40% Conductivity	30% Conductivity
37-Wire Copper-clad Steel Strands
37/5	32.26	435.34	481.49	579.84	5183	0.07226	0.0963
37/6	28.7	360.54	397.16	481.05	4111	0.09112	0.12146
37/7	25.65	298.02	327.08	397.34	3260	0.1149	0.15314
37/8	22.83	245.95	269	326.63	2586	0.14488	0.19313
37 no. 9	20.35	202.65	220.94	266.64	2050	0.18266	0.24351
37 no. 10	18.11	167.5	182.45	216.31	1626	0.23035	0.30707
19-Wire Copper-clad Steel Strands
19/5	23.11	223.57	247.29	297.75	2647	0.13986	0.18647
19/6	20.57	185.12	203.94	247.11	2098	0.17637	0.23511
19/7	18.31	153.04	167.94	204.03	1664	0.22238	0.29648
19/8	16.31	126.29	138.13	167.72	1320	0.28044	0.37392
19/9	14.53	104.09	113.48	136.21	1047	0.35358	0.47134
7-Wire Copper-clad Steel Strands
7/5	13.87	82.37	91.09	109.69	971.148	0.37818	0.50414
7/6	12.34	68.22	75.16	91.05	770.159	0.47691	0.63566
7/7	11	56.38	61.9	75.16	610.744	0.60122	0.80163
7/8	9.78	46.55	50.91	61.81	484.378	0.75834	1.01057
7/9	8.71	38.34	41.8	50.2	384.182	0.95612	1.27461
7/10	7.77	31.69	34.52	40.92	304.624	1.20573	1.6072
3-Wire Copper-clad Steel Strands
3/5	9.96	37.26	41.22	52.78	415.437	0.88068	1.17391
3/6	8.86	30.86	33.99	38.96	329.449	1.11028	1.48026
3/7	7.9	25.51	27.99	35.25	261.256	1.40023	1.86665
3/8	7.04	21.05	23.02	27.95	207.12	1.76562	2.35373
3/9	6.27	17.35	18.91	22.82	164.35	2.22646	2.96807
3/10	5.59	14.33	15.62	18.51	130.299	2.80735	3.74248
3/12	4.42	9.95		11.41	81.951	4.46408	5.94992

Copper Clad Steel Wire

Misurare	Strands*sigle path	Diameter	Conductivity
mm2	Strands*sigle path	mm	%
10	7*1.4	4.2	18%—70%
16	7*1.7	5.1	18%—70%
25	7*2.14	6.42	18%—70%
35	7*2.52	7356
50	7*3.00	9	18%—70%
70	19*1.44	10.7	18%—70%
95	19*2.52	12.6	18%—70%
120	19*2.80	14	18%—70%
150	19*3.15	15.75	18%—70%
185	37*2.52	17.64	18%—70%
240	37*2.85	19.95	18%—70%
300	37*3.15	21.7	18%—70%

Copper-clad steel wire

Application:

Telephone wire,CATV cable, Electrical power,Communication overhead wire,Internet Cable,Computer Cable,

Electronics contact fittings,Screen line of electric power cable.High temperature conductor，

Hard-Drawn Copper-Clad Steel Wire

Area at 20°C Tensile Strength, min, psiA
cmil in.2,A Grade 40 Grade 40 Grade 30 Grade 30
Nominal Diameter,			HS	EHS	HS	EHS
0.2043	41 740	0.03278	108 000	. . .	120 000	142 500
0.1819	33 090	0.02599	113 000	. . .	125 000	150 500
0.1650B	27 230	0.02138	118 000	. . .	130 000	157 500
0.1620	26 240	0.02061	118 000	. . .	130 000	157 500
0.1443	20 820	0.01635	123 000	. . .	135 000	164 000
0.1285	16 510	0.01297	128 000	. . .	140 000	170 000
0.1280B	16 380	0.01287	128 000	. . .	140 000	170 000
0.1144	13 090	0.01028	133 000	. . .	145 000	174 100
0.1040B	10 820	0.008495	138 600	156 000	151 000	175 000
0.1019	10 380	0.008155	138 600	. . .	151 000	179 000
0.0808	6 530	0.005129	115 000	. . .	120 000	179 000
0.0800B	6 400	0.005027	115 000	. . .	120 000	179 000
0.0640B	4 096	0.003217	125 000	. . .	130 000	179 000
0.0403	1 624	0.001276	130 000	. . .	135 000	179 000
0.0390B	1 521	0.001195	130 000	. . .	135 000	179 000
0.0320	1 024	0.000804	135 000	161 000	145 000	179 000

A Metric equivalents: 1 in. = 25.4 mm (round to four significant figures); 1 in.2 = 645.16 mm2 (round to four significant figures); 1 psi = 6.9 kPa (round to significant figure of U.S. customary units).

B These diameters are often employed by purchasers for communication lines but are not in the American Wire Gage (B & S Wire Gage) series, as are the other diameters listed (Note 3).

Maximum Resistance at 20°C V/1000 ftA

Nominal Diameter, in.	Grades 40 HS	Grades 30 HS
	and 40 EHS	and 30 EHS
0.2043	0.6532	0.8707
0.1819	0.8239	1.098
0.1650	1.001	1.335
0.1620	1.039	1.385
0.1443	1.309	1.745
0.1285	1.651	2.201
0.1280	1.664	2.218
0.1144	2.083	2.777
0.1040	2.521	3.360
0.1019	2.625	3.500
0.0808	4.206	5.607
0.0800	4.292	5.722
0.0640	6.771	9.027
0.0403	17.13	22.83
0.0390	18.32	24.42
0.0320	27.52	36.69

A Metric equivalents: 1 V/1000 ft = 3.281 V/km (round off to four significant figures).

Annealed Copper-Clad Steel Wire

Hard copper clad steel wire tensile strength and resistance requirements

Diameter mm	Sectional Area mm2	Tensile Strength MPa				D.C．Resistance Ω/km
Diameter mm	Sectional Area mm2	40HS	40EHS	30HS	30EHS	40HS、40EHS	30HS、30EHS
5.189	21.15	745	1076	828	983	2.1431	2.8568
4.620	16.77	780		863	1038	2.7032	3.6025
4.191	13.79	814		897	1088	3.2843	4.3801
4.115	13.30	814		897	1088	3.4057	4.5442
3.665	10.55	849		932	1132	4.2948	5.7253
3.264	8.37	883		966	1173	5.4169	7.2215
3.251	8.30	883		966	1173	5.4596	7.2773
2.906	6.63	918		1001	1201	6.8343	9.1113
2.642	5.48	956		1042	1208	8.2714	11.0242
2.588	5.26	956		1042	1235	8.6126	11.4835
2.052	3.31	956		1042	1235	13.7999	18.3966
2.032	3.24	956		1042	1235	14.0821	18.7739
1.626	2.08	956		1042	1235	22.2157	29.6176
1.024	0.823	956		1042	1235	56.2035	74.9052
0.991	0.771	956		1042	1235	60.1079	80.1220
0.813	0.519	956		1042	1235	90.2931	120.3799

CATV Copper clad steel wire for lead-in wire

Nominal Dia mm	allowable deviation (mm)	Sectional Area mm2	D.C．Resistance Ω/km	Breaking load N	Quality Kg/km
1.628	0.015	2.082	40.1890	1722	16.52
1.450	0.015	1.652	50.7636	1366	13.47
1.290	0.013	1.307	64.0484	1081	10.40
1.151	0.013	1.039	80.7388	859	8.27
1.024	0.010	0.823	101.7897	681	6.71
0.813	0.008	0.519	161.2612	427	4.12
0.724	0.008	0.411	203.7731	334	3.35

Requirements for tensile strength and elongation of copper – clad steel wire for electronic products

Note: for intermediate specifications, the upper limit of tensile strength and the lower limit of elongation are taken

* is the total elongation at break; Elongation after fracture is less than 0.5%

d mm	Sectional Area mm2	Tensile Strength MPa				Minimum elongation % (250mm）
d mm	Sectional Area mm2	30HS	30UN	40HS	40UN	30HS、40HS	30UN、40UN
1.83	2.63	875	345	758	310	1.5	15
1.63	2.08	875	345	758	310	1.5	15
1.45	1.65	875	345	758	310	1.5	15
1.29	1.31	875	345	758	310	1.5	15
1.15	1.04	875	345	758	310	1.5	15
1.02	0.823	875	345	758	310	1.0	15
0.912	0.653	875	345	758	310	1.0	15
0.813	0.519	875	345	758	310	1.0	15
0.742	0.412	875	380	758	345	1.0	15
0.643	0.324	875	380	758	345	1.0	15
0.574	0.259	875	380	758	345	1.0	15
0.511	0.205	875	380	758	345	1.0	10
0.455	0.162	875	380	758	345	1.0	10
0.404	0.128	875	380	758	345	1.0	10
0.361	0.102	875	380	758	345	1.0	10
0.320	0.0804	875	380	758	345	1.0	10
0.287	0.0647	875	380	758	345	1.0	10
0.254	0.0507	875	380	758	345	1.0	10
0.226	0.0401	875	380	758	345	1.0	10
0.203	0.0324	875	380	758	345	1.0	10
0.180	0.0255	875	380	758	345	1.0	10
0.160	0.0201	875	380	758	345	1.0	10
0.142	0.0159	875	380	758	345	1.0	10
0.127	0.0127	875	380	758	345	1.0	10
0.144	0.0103	875	380	758	345	1.0	10
0.102	0.00811	875	380	758	345	1.0	10
0.089	0.00621	875	380	758	345	1.0	10
0.079	0.00487	875	380	758	345	1.0	10

Copper Clad Steel Wire Manufacturer

Cavo di dosaggio is a leading manufacturer of Copper Clad Steel (CCS) wire, offering high-quality, reliable solutions for a wide range of industries. With a combination of copper’s excellent conductivity and steel’s superior strength, our CCS wire provides the ideal balance of electrical performance and mechanical durability.

Our CCS wire is widely used in electrical power transmission, telecommunications, and grounding systems. The copper coating ensures low electrical resistance, while the steel core provides high tensile strength, making it suitable for both aerial and underground applications. Inoltre, our copper-clad steel wires offer excellent corrosion resistance, making them ideal for harsh environments.

At Cavo di dosaggio, we adhere to international standards like ASTM, CEI, and ISO, ensuring that each product undergoes rigorous quality control for tensile strength, conductivity, and durability. Whether you’re in the power, telecom, or construction industry, our Copper Clad Steel wire guarantees top-notch performance and cost-efficiency.

Choose Cavo di dosaggio for your CCS wire needs—where quality, innovation, and reliability meet the highest industry standards.