PRODUCT

Aluminum Clad Steel-ACS

Aluminum Coated Steel Wire

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Application

Manufacture of bare overhead conductor, OPGW, ground wire,Overhead ground wire, messenger wire, guy wire, formed wire for protecting, terminating and splicing transmission and distribution lines,shield wire protecting transmission lines against lightning damage fence, barber wire and hardware.

Alumo-clad steel wire and strand is used by power utilities as well as formed wire and optical ground wire manufacturers.

Specification

based upon international standard IEC6 1232, EN 61.232 and ASTM B-415 ASTM B502

Class

14SA 20SA typeA typeB 27SA 30SA 40SA

Features

Alumo-clad steel wire outlasts other options by as much as 200% in corrosive environments, significantly lowering maintenance and replacement costs. When compared to solid aluminum wire, aluminum clad steel wire offers tremendous savings.

Alumo-clad steel wire overhead ground wire has excellent corrosion resistance. Its strength and conductivity remain unchanged in any atmosphere where aluminum is satisfactory, especially those known to be corrosive from industrial or atmospheric conditions.

This assurance against corrosion is obtained through the application of a thick covering of pure aluminum which provides a substantial barrier of protective metal. The minimum cladding thickness of Alumo-clad steel wire is 10% of the radius of the wire. the cladding has a continuous, strong metallic bond to the steel core that will not crack or flake.

Alumo-clad steel wire also provides strength greater than or equal to other overhead ground wires. For commonly used wire sizes, the tensile strength of the individual wire can approach 200,000 pounds per square inch. When used in a strand for overhead ground wire, this high strength permits greater span lengths, less sag and heavier loads under storm loading conditions.

Directly related to strength and sag performance is the lighter weight of aluminum clad steel wire. Due to its thick cladding of aluminum, Alumo-clad steel wire is 15% lighter that a steel strand of equivalent size. This lighter weight, combined with high strength, permits aluminum clad steel wire to be installed to the same sags as steel with correspondingly lower tensions and tower stresses on the towers or supporting structures.

IEC61232

Class					20SA			27SA	30SA		40SA
Type					A		B	-	-		-
Tolerance on diameter		Ø ≥ 2,67 mm			± 1,5%		± 1,5%	± 1,5%	± 1,5%		± 1,5%
		Ø < 2,67 mm			± 0,04 mm		± 0,04 mm	± 0,04 mm	± 0,04 mm		± 0,04 mm
Minimum thickness of aluminium clad (% of radius)					8% if Ø < 1,80 mm			14%	15%		25%
					10% if Ø ≥ 1,80 mm
Nominal density at 20°C (g/cm³)					6,59		6,53	5,91	5,61		4,64
Resistivity at 20°C max. (nΩ x m)					84,80		84,80	63,86	57,47		43,10
Conductivity (IACS)					20,3%		20,3%	27%	30%		40%
Final modulus of elasticity (GPa)					162		155	140	132		109
Coefficient of linear expansion (K-1)					13,0 x 10-6		12,6 x 10-6	13,4 x 10-6	13,8 x 10-6		15,5 x 10-6
Constant-mass temperature coefficient of resistance (K-1)					0,0036		0,0036	0,0036	0,0038		0,0040
MECHANICAL PROPERTIES
class	type		nominal diameter (mm)			min. tensile strength (N/mm²)		min. stress at 1% extension		elongation		torsion test (min. twists)
20SA	A		1,24	3,25		1340		1200		1,5%		20
			3,26	3,45		1310		1180
			3,46	3,65		1270		1140
			3,66	3,95		1250		1100
			3,96	4,10		1210		1100
			4,11	4,40		1180		1070
			4,41	4,60		1140		1030
			4,61	4,75		1100		1000
			4,76	5,50		1070		1000
	B		1,24	5,50		1320		1100
27SA	-		2,50	5,00		1080		800
30SA	-		2,50	5,00		880		650
40SA	-		2,50	5,00		680		500

ASTM B 415-02

1, Tensile Requirement

Nominal Diameter, in./mm		Size, AWG	20.3%		27%		30%		40%
Nominal Diameter, in./mm		Size, AWG	psi	MPa	psi	MPa	psi	MPa	psi	MPa
0.2043	5.19	4	155 000	1070	125 000	862	102 000	703	80 000	552
0.1880	4.78		160 000	1100	129 000	889	106 000	731	84 000	579
0.1819	4.62	5	165 000	1140	133 000	917	110 000	758	88 000	607
0.1729	4.39		170 000	1170	137 000	945	114 000	786	92 000	634
0.1620	4.11	6	175 000	1210	141 000	972	114 000	786	96 000	662
0.1549	3.93		180 000	1240	145 000	1000	118 000	814	96 000	662
0.1443	3.67	7	185 000	1280	150 000	1034	122 000	841	98 000	676
0.1369	3.48		190 000	1310	154 000	1062	126 000	869	98 000	676
0.1285	3.26	8	195 000	1340	156 000	1076	128 000	883	99 500	686
0.1144	3.91	9	195 000	1340	156 000	1076	128 000	883	99 500	686
0.1019	2.59	10	195 000	1340	156 000	1076	128 000	883	99 500	686
0.0907	2.30	11	195 000	1340	156 000	1076	128 000	883	99 500	686
0.0808	2.05	12	195 000	1340	156 000	1076	128 000	883	99 500	686

2, Physical Constants

% Conductivity	Density at 20°C	Modulus of Elasticity psi	Coef. of Linear Exp.	Temperature Coef. of Resistance
20.3	0.2381 lb/in3 (6.59 g/cm3)	23.5×106 (162 GPa)	0.0000072/°F (0.0000126/℃)	0.0020/°F (0.0036/℃)
27	0.2135 lb/in3 (5.91 g/cm3)	20.3×106 (140 GPa)	0.0000077/°F (0.0000134/℃)	0.0020/°F (0.0036/℃)
30	0.2027 lb/in3 (5.61 g/cm3)	19.1×106 (132 GPa)	0.0000079/°F (0.0000138/℃)	0.0021/°F (0.0038/℃)
40	0.1676 lb/in3 (4.64 g/cm3 )	15.8×106 (109 GPa)	0.0000089/°F (0.0000155/℃)	0.0022/°F (0.0040/℃)

3, Wire Diameter Variations

Specified Diameter, in.

Permissible Variations in Specified Diameter, plus and minus

0.2043 to 0.1000,incl

0.1000 to 0.0800,incl

1.5%

0.0015 in. (0.038mm)

4, Aluminum Thickness and Resistance

% Conductivity

% of Nominal Wire Radius

D.C. Resistance at 20℃

20.3

10%

14%

15%

25%

51.01 Ω·cmil/ft

38.41 Ω·cmil/ft

34.57 Ω·cmil/ft

25.93 Ω·cmil/ft

ASTM B 502-02

Aluminum-Clad Steel Core Wire for Aluminum Conductors, Aluminum-Clad Steel Reinforced

1. Tensile Requirements

Nominal Diameter

in.(mm)

Stress at 1% Extension min. psi(MPa)

Ultimate Tensile Strength min. psi(MPa)

Elongation min

%,10in. (250mm)

0.0770 to 0.1289

(1.956 to 3.274).,incl

0.1290 to 0.1396

(3.275 to 3.477).,incl

0.1370 to 0.1443

(3.478 to 3.665).,incl

0.1444 to 0.1549

(3.666 to 3.934).,incl

0.1550 to 0.1620

(3.935 to 4.115).,incl

0.1621 to 0.1729

(4.116 to 4.392).,incl

0.1730 to 0.1819

(4.393 to 4.620).,incl

0.1820 to 0.1880

(4.621 to 4.775).,incl

175 000(1206)

170 000(1172)

165 000(1137)

160 000(1103)

155 000(1068)

150 000(1034)

145 000(1100)

195 000(1344)

190 000(1310)

185 000(1275)

180 000(1241)

175 000(1206)

170 000(1172)

165 000(1137)

160 000(1103)

1.5

2. Wire Diameter Variations

Nominal Diameter in.(mm)

Permissible Variations in Nominal Diameter

0.0770 to 0.0999

(1.956 to 2.537),incl

0.1000 to 0.1880

(2.538 to 4.775),incl

0.0015in,(0.038mm)

1.5%

ASTM B416

Code Number	Area	No. of wires	Diameters		Weight	Rated Strength	DC Resistance
Code Number	mm2	No. of wires	wire	conductor	kg/km	kN	ohm/km
3 No 5 Awg.	50,32	3	4,62	9,96	334,1	54,42	1.699
3 No 6 Awg.	39 ,00	3	4,11	8,87	265,0	45,74	2.142
3 No 7 Awg.	31,65	3	3,67	7,90	210,1	38,36	2.701
3 No 8 Awg.	25,10	3	3,26	7,03	166,7	32,06	3.406
3 No 9 Awg.	19,90	3	2,91	6,26	132,2	25,43	4.294
3 No 10 Awg.	15,78	3	2,59	5,58	104,8	20,16	5.415
7 No 5 Awg.	117,40	7	4,62	13,90	781,1	120,27	0,7426
7 No 6 Awg.	93,10	7	4,11	12,40	619,5	101,14	0,9198
7 No 7 Awg.	73,87	7	3,67	11,00	491,1	84,81	1.16
7 No 8 Awg.	58,56	7	3,26	9,78	389,6	70,88	1.463
7 No 9 Awg.	46,44	7	2,91	8,71	308,9	56,20	1.844
7 No 10 Awg.	36,83	7	2,59	7,76	245,1	44,58	2.325
7 No 11 Awg.	29,21	7	2,30	6,91	194,4	35,35	2.932
7 No 12 Awg.	23,16	7	2,05	6,16	154,2	28,03	3.697
19 No 5 Awg.	318,70	19	4,62	23,10	2129,0	326,39	0,2698
19 No 6 Awg.	252,70	19	4,11	20,60	1688,0	274,55	0,3402
19 No 7 Awg.	200,40	19	3,67	18,30	1339,0	230,18	0,4290
19 No 8 Awg.	158,90	19	3,26	16,30	1062,0	192,41	0,5409
19 No 9 Awg.	126,10	19	2,91	14,50	842,0	152,58	0,6821
19 No 10 Awg.	99,96	19	2,59	12,90	667,7	121,00	0,8601
37 No 5 Awg.	620,60	37	4,62	32,30	4170,0	635,43	0,1394
37 No 6 Awg.	492,20	37	4,11	28,80	3307,0	534,85	0,1757
37 No 7 Awg.	390,30	37	3,67	25,70	2623,0	448,09	0,2216
37 No 8 Awg.	309,50	37	3,26	22,90	2080,0	374,67	0,2794
37 No 9 Awg.	245,50	37	2,91	20,30	1649,0	279,11	0,3523
37 No 10 Awg.	194,70	37	2,59	17,90	1308,0	235,61	0,4443

DIN 48201

Code Number	Area	No. of wires	Diameters(mm)		Weight	Rated Strength	DC Resistance
mm2	mm2	No. of wires	wire	conductor	kg/km	kN	ohm/km
25	24.25	7	2.1	6.3	162	31.56	3.546
35	34.36	7	2.5	7.5	229	44.72	2.499
50	49.48	7	3	9	330	64.4	1.736
70	65.81	19	2.1	10.5	441	85.65	1.313
95	93.27	19	2.5	12.5	626	121.39	0.925
120	116.99	19	2.8	14	785	152.26	0.737
150	147.11	37	2.25	15.7	990	191.46	0.587
185	181.62	37	2.5	17.5	1221	236.38	0.476
240	242.54	61	2.25	20.2	1635	299.05	0.357

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