ACS-Aluminium-Clad Steel

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ACS-Aluminium-Clad Steel

ACS conductor – strength of steel, conductivity of aluminum.

Corrosion-resistant ACS for coastal and industrial zones.

Ideal for grounding, guy wires, and overhead lines.

Durable ACS cable with long service life.

Get ACS wire direct from the factory – fast delivery.

Application

ACS (Aluminum-Clad Steel) is a high-strength metal conductor consisting of a steel core covered with a pure aluminum layer. It combines the mechanical strength of steel with the electrical conductivity and corrosion resistance of aluminum. Its production process uses a metallurgical bonding method to tightly combine aluminum and steel to form a permanent composite material with excellent electrical conductivity, corrosion resistance and structural stability.

Compared with ordinary galvanized steel wire, ACS conductors have a longer service life in harsh environments (such as seaside, high salt fog, and acid rain areas). Its aluminum layer can effectively prevent steel oxidation and has good electrical connection performance. It is often used in conjunction with aluminum stranded wire to reduce electrochemical corrosion caused by potential difference.

ACS conductors are widely used in load-bearing components in overhead transmission lines, such as aluminum core stranded wire (ACSR), aluminum alloy conductor (AAACSR), OPGW optical cable core wire, etc. It can replace traditional galvanized steel wire to improve the corrosion resistance and service life of the line while reducing maintenance costs.

Specifications

Standard	Organization	Material	Typical Application
ASTM B 415-1	ASTM (USA)	Aluminum-Clad Steel Wire, Class A– ~10% aluminum by cross-section- Steel: high-strength carbon steel- Aluminum: metallurgically bonded (not coated)	Used in ground wires (shield wires), guy wires, and as core for overhead conductors where moderate conductivity and high strength are needed
ASTM B 415-2	ASTM (USA)	Aluminum-Clad Steel Wire, Class B or C– Higher aluminum content than Class A- Improved conductivity, lower strength vs Class A	Used where higher corrosion resistance or conductivity is desired, such as coastal regions or long-span shield wires
ASTM B 502	ASTM (USA)	Zinc-Coated (Galvanized) Steel Core Wire for ACSRNot ACS, but galvanized steel	Core wire used in ACSR conductors; not aluminum-clad, but zinc-coated for corrosion resistance

Parameter

ASTM B 415-1 Round aluminum-clad steel wire (Class A coating, thinner, conductivity preferred) Commonly used for conductor core wire 🇺🇸 United States, 🇨🇦 Canada, 🇲🇽 Mexico, the entire Americas (such as Brazil, Peru, Chile)

Size AWG	Diameter		Tensile Strength		Cross section		D C Resistance at 20℃	Nominal Weight		Minimum Thickness of Aluminum Cladding
Size AWG	in.	mm	ksi	N/mm	in2	mm2	Ω/km	Ib/1000ft	Ka/km	in	mm
				(CONDUCTIVITY = 20.3 % IACS)
4	0.204	5.189	155	1070	0.03278	21.149	4.01	93.67	139.37	0.01022	0.259
4	0.188	4.775	160	1100	0.02776	17.909	4.735	79.32	118.02	0.0094	0.239
5	0.182	4.62	165	1140	0.02599	16.766	5.058	74.25	110.49	0.0091	0.231
5	0.173	4.392	170	1170	0.02348	15.148	5.598	67.09	99.82	0.00865	0.22
6	0.162	4.115	175	1210	0.02061	13.298	6.377	58.89	87.63	0.0081	0.206
6	0.155	3.934	180	1240	0.01884	12.158	6.975	53.84	80.12	0.00775	0.197
7	0.144	3.665	185	1280	0.01635	10.551	8.037	46.73	69.53	0.00722	0.183
7	0.137	3.477	190	1310	0.01472	9.497	8.93	42.06	62.58	0.00685	0.174
8	0.129	3.264	195	1340	0.01297	8.367	10.135	37.06	55.14	0.00643	0.163
9	0.114	2.906	195	1340	0.01028	6.631	12.787	29.37	43.7	0.00572	0.145
10	0.102	2.588	195	1340	0.00816	5.261	16.117	23.3	34.67	0.0051	0.129
11	0.091	2.304	195	1340	0.00646	4.168	20.343	18.46	27.47	0.00454	0.115
12	0.081	2.052	195	1340	0.00513	3.308	25.634	14.65	21.8	0.00404	0.103

ASTM B 415-2 Round aluminum-clad steel wire (Class B/C coating, thicker, corrosion resistance and strength preferred) Same as above; more suitable for lines in coastal, humid, and corrosive environments

Size AWG	Diameter		Tensile Strength		Cross section		D C Resistance at 20℃	Nominal Weight		Minimum Thickness of Aluminum Cladding
Size AWG	in.	mm	ksi	N/mm2	in2	mm2	Ω/km	Ib/1000 ft	Kg/km	in	mm
				(CONDUCTIVI		TY=27 %	IACS)
4	0.204	5.189	125	862	0.03278	21.149	3.019	84	124.99	0.0143	0.363
4	0.188	4.775	129	889	0.02776	17.909	3.566	71.13	105.84	0.01316	0.334
5	0.182	4.62	133	917	0.02599	16.766	3.809	66.59	99.09	0.01273	0.323
5	0.173	4.392	137	945	0.02348	15.148	4.216	60.16	89.52	0.0121	0.307
6	0.162	4.115	141	972	0.02061	13.298	4.802	52.82	78.59	0.01134	0.288
6	0.155	3.934	145	1000	0.01884	12.158	5.252	48.29	71.85	0.01084	0.275
7	0.144	3.665	150	1034	0.01635	10.551	6.052	41.91	62.36	0.0101	0.257
7	0.137	3.477	154	1062	0.01472	9.497	6.724	37.72	56.12	0.00958	0.243
8	0.129	3.264	156	1076	0.01297	8.367	7.632	33.23	49.45	0.009	0.228
9	0.114	2.906	156	1076	0.01028	6.631	9.629	26.34	39.19	0.00801	0.203
10	0.102	2.588	156	1076	0.00816	5.261	12.136	20.9	31.1	0.00713	0.181
11	0.091	2.304	156	1076	0.00646	4.168	15.319	16.56	24.64	0.00635	0.161
12	0.081	2.052	156	1076	0.00513	3.308	19.303	13.14	19.55	0.00566	0.144
(CONDUCTIVITY = 30 % IACS)
4	0.204	5.189	102	703	0.03278	21.149	2.717	79.74	118.65	0.01532	0.389
4	0.188	4.775	106	731	0.02776	17.909	3.209	67.52	100.47	0.0141	0.358
5	0.182	4.62	110	758	0.02599	16.766	3.428	63.21	94.06	0.01364	0.347
5	0.173	4.392	114	786	0.02348	15.148	3.794	57.11	84.98	0.01297	0.329
6	0.162	4.115	114	786	0.02061	13.298	4.322	50.14	74.6	0.01215	0.309
6	0.155	3.934	118	814	0.01884	12.158	4.727	45.84	68.21	0.01162	0.295
7	0.144	3.665	122	841	0.01635	10.551	5.447	39.78	59.19	0.01082	0.275
7	0.137	3.477	126	869	0.01472	9.497	6.052	35.8	53.28	0.01027	0.261
8	0.129	3.264	128	883	0.01297	8.367	6.869	31.54	46.94	0.00964	0.245
9	0.114	2.906	128	883	0.01028	6.631	8.666	25	37.2	0.00858	0.218
10	0.102	2.588	128	883	0.00816	5.261	10.923	19.84	29.52	0.00764	0.194
11	0.091	2.304	128	883	0.00646	4.168	13.787	15.72	23.38	0.0068	0.173
12	0.081	2.052	128	883	0.00513	3.308	17.372	12.47	18.56	0.00606	0.154
				(CONDUCTIVIT		Y= 40 %	IACS)
4	0.204	5.189	80	552	0.03278	21.149	2.038	65.95	98.13	0.02554	0.649
4	0.188	4.775	84	579	0.02776	17.909	2.407	55.85	83.1	0.0235	0.597
5	0.182	4.62	88	607	0.02599	16.766	2.571	52.28	77.79	0.02274	0.578
5	0.173	4.392	92	634	0.02348	15.148	2.845	47.23	70.29	0.02161	0.549
6	0.162	4.115	96	662	0.02061	13.298	3.241	41.47	61.7	0.02025	0.514
6	0.155	3.934	96	662	0.01884	12.158	3.545	37.91	56.41	0.01936	0.492
7	0.144	3.665	98	676	0.01635	10.551	4.085	32.9	48.96	0.01804	0.458
7	0.137	3.477	98	676	0.01472	9.497	4.539	29.61	44.06	0.01711	0.435
8	0.129	3.264	99.5	686	0.01297	8.367	5.152	26.09	38.82	0.01606	0.408
9	0.114	2.906	99.5	686	0.01028	6.631	6.5	20.68	30.77	0.0143	0.363
10	0.102	2.588	99.5	686	0.00816	5.261	8.192	16.41	24.41	0.01274	0.324
11	0.091	2.304	99.5	686	0.00646	4.168	10.34	13	19.34	0.01134	0.288
12	0.081	2.052	99.5	686	0.00513	3.308	13.029	10.32	15.35	0.0101	0.257

ASTM B 502 Aluminum-clad steel stranded wire (ACS Strand), made of B415 single wires, commonly used for overhead ground wires. Also suitable for 🇺🇸 American system countries, especially widely used in transmission ground wires and lightning protection systems

SINGLE WVIRE AS PER ASTM B 502 STANDARD
Diam etor		Tens ile Strength		Stress at 1% Extension		Resistivity		Density
in.	mm	ksi	N/m㎡	ksi	N/mm	Q.Cmil/H	n0m	lb/in3	g/cm 3
0.0770-0.1289	1.956~3.274	195	1344	175	1206	51.01	84.8	0.2381	6.59
0.1290-0.1369	3.275~3.477	190	1310	170	1172
0.1370-0.1443	3.478-3.665	185	1275	165	1137
0.1444-0.1549	3.666-3.934	180	1241	160	1103
0.1550-0.1620	3.935~4.115	175	1206	160	1103
0.1621~0.1729	4.116~4.392	170	1172	155	1068
0.1730~0.1819	4.393~4.620	165	1137	150	1034
0.1820~0.1880	4.621~4.775	160	1103	145	1000
Coefficient of linear expansion :12.6×10/℃ Modulus of Elasticity : 23500 Ksl (162000 MPa)				Temperature coefficient of Resistance: 0.0036/℃C Minimum Aluminum Thickness : 10% of nominal wire radius
SINGLE WIRE AS PER AS-3607 STANDARD
Diameter （一）			Tensile Strength		Cross saction		DC Resistance a120℃	Nominal Weight	Minimum Thickness of Aluminum Cladding
SHd	Max	Min	N/mm2	KN	mm		0/km	Kg/km	in
1.6	1.64	1.56	1340	2.69	2.011		42.28	13.25	0.08
1.75	1.79	1.71	1340	3.22	2.405		35.34	15.85	0.088
2.25	2.29	2.21	1340	5.33	3.976		21.38	26.2	0.113
2.5	2.54	2.46	1340	6.58	4.909		17.32	32.35	0.125
2.75	2.791	2.709	1340	7.96	5.94		14.31	39.14	0.138
3	3.045	2.955	1340	9.47	7.069		12.03	46.58	0.15
3.25	3.299	3.201	1340	11.12	8.296		10.25	54.67	0.163
3.5	3.553	3.448	1310	12.6	9.621		8.83	63.4	0.175
3.75	3.806	3.694	1270	14.03	11.045		7.7	72.78	0.188
Coefficient of linear expansion :12.9×10*/℃ Modulus of Elasticity :23500 Ksi (162000 MPa)					Tem perature coefficient of Resistance: 0.0036℃ Minimum Aluminum Thickness : 10% of nominal wire radlus

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