ASTM A 475 Norms for Zinc-Coated Steel Wire Strand
Physical Properties of Zinc-Coated Steel Wire Strand
| Nominal Diameter of Strand, in(mm) | Number of Wires. in Strand | Nominal Diameter of Coated Wires in Strand, in.(mm) | Approximate Weight of Strand, lb/1000ft (Kg/304.8m) |
Minimum Breaking Strength of Strand, lbf(KN) | ||||||
| Utilities Grade | Common Grade |
Sienens-Martin Grade | High-Strength Grade | Extra High-Strength Grade | ||||||
| 1/8 | (3.18) | 7 | 0.041(1.04) | 32 | (15) | --- | 540 (2.402) |
910 (4.048) |
1330 (5.916) |
1830( 8.140) |
| 5/32 | (3.97) | 7 | 0.052(1.32) | 51 | (23) | --- | 870 (3.870) |
1470 (6.539) |
2140 (9.519) |
2940 (13.078) |
| 3/16 | (4.76) | 7 | 0.062(1.57) | 73 | (33) | --- | 1150 (5.115) |
1900 (8.452) |
2850 (12.677) |
3990 (17.748) |
| 3/16 | (4.76) | 7 | 0.065(1.65) | 80 | (36) | 2400 (10.676) (1) |
--- | --- | --- | --- |
| 7/32 | (5.56) | 3 | 0.104(2.64) | 88 | (40) | --- | 1400 (6.228) |
2340 (10.409) |
3500 (15.569) |
4900 (21.796) |
| 7/32 | (5.56) | 7 | 0.072(1.83) | 98 | (44) | --- | 1540 (6.850) |
2560 (11.387) |
3850 (17.126) |
5400 (24.020) |
| 1/4 | (6.35) | 3 | 0.120(3.05) | 117 | (53) | 3150 (14.012) (2) |
1860 (8.274) |
3040 (13.523) |
4730 (21.040) |
6740 (29.981) |
| 1/4 | (6.35) | 3 | 0.120(3.05) | 117 | (53) | 4500 (20.017) (3) |
--- | --- | --- | --- |
| 1/4 | (6.35) | 7 | 0.080(2.03) | 121 | (55) | --- | 1900 (8.452) |
3150 (14.012) |
4750 (21.129) |
6650 (29.581) |
| 9/32 | (7.14) | 3 | 0.130(3.30) | 137 | (62) | --- | 2080 (9.252) |
3380 (15.035) |
5260 (23.398) |
7500 (33.362) |
| 9/32 | (7.14) | 7 | 0.093(2.36) | 164 | (74) | 4600 (20.462) (1) |
2570 (11.432) |
4250 (18.905) |
6400 (28.469) |
8950 (39.812) |
| 5/16 | (7.94) | 3 | 0.145(3.68) | 171 | (78) | 6500 (28.913) (3) |
2490 (11.076) |
4090 (18.193) |
6350 (28.246) |
9100 (40.479) |
| 5/16 | (7.94) | 7 | 0.104(2.64) | 205 | (93) | --- | 3200 (14.234) |
5350 (23.798) |
8000 (35.586) |
11200 (49.820) |
| 5/16 | (7.94) | 7 | 0.109(2.77) | 225 | (102) | 6000 (26.689) (1) |
--- | --- | --- | --- |
| 3/8 | (9.52) | 3 | 0.165(4.19) | 220 | (100) | 8500 (37.810) (3) |
3330 (14.813) |
5560 (24.732) |
8360 (37.187) |
11800 (32.489) |
| 3/8 | (9.52) | 7 | 0.120(3.05) | 273 | (124) | 11500 (51.155) (4) |
4250 (18.905) |
6950 (30.915) |
10800 (48.010) |
15400 (68.503) |
| 7/16 | (11.11) | 7 | 0.145(3.68) | 399 | (181) | 18000 (80.068) (4) |
5700 (25.355) |
9350 (41.591) |
14500 (64.499) |
20800 (92.523) |
| 1/2 | (12.70) | 7 | 0.165(4.19) | 517 | (234) | 25000 (111.206) (4) |
7400 (32.917) |
12100 (53.823) |
18800 (83.627) |
26900 (119.657) |
| 1/2 | (12.70) | 19 | 0.100(2.54) | 504 | (229) | --- | 7620 (33.895) |
12700 (56.492) |
19100 (84.961) |
26700 (118.768) |
| 9/16 | (14.29) | 7 | 0.188(4.78) | 671 | (304) | --- | 6500 (42.703) |
15700 (69.837) |
24500 (108.981) |
35000 (155.688) |
| 9/16 | (14.29) | 19 | 0.113(2.87) | 637 | (289) | --- | 9640 (42.881) |
16100 (71.616) |
24100 (107.202) |
33700 (149.905) |
| 5/8 | (15.88) | 7 | 0.207(5.26) | 813 | (369) | --- | 11600 (51.599) |
19100 (84.961) |
29600 (131.667) |
42400 (188.605) |
| 5/8 | (15.88) | 19 | 0.125(3.18) | 796 | (361) | --- | 11000 (48.930) |
18100 (80.513) |
2800 (124.995) |
40200 (178.819) |
| 3/4 | (19.05) | 19 | 0.150(3.81) | 1155 | (524) | --- | 16000 (71.172) |
26200 (116.543) |
40800 (181.487) |
58300 (259.331) |
| 7/8 | (22.22) | 19 | 0.177(4.50) | 1581 | (717) | --- | 21900 (97.416) |
26200 (116.543) |
55800 (248.211) |
79700 (354.423) |
| 1 | (25.40) | 19 | 0.200(5.08) | 2073 | (940) | --- | 28700 (127.664) |
47000 (209.066) |
73200 (325.610) |
104500 (464.839) |
| 1 | (25.40) | 37 | 0.143(3.63) | 2057 | (933) | --- | 28300 (125.885) |
46200 (205.508) |
71900 (319.827) |
102700 (456.832) |
| 1-1/8 | (28.58) | 37 | 0.161(4.09) | 2691 | (1221) | -- | 36000 (160.136) |
58900 (262.000) |
91600 (407.457) |
130800 (581.827) |
| 1-1/4 | (31.75) | 37 | 0.179(4.55) | 3248 | (1473) | --- | 44600 (198.391) |
73000 (324.720) |
113600 (505.318) |
162200 (721.502) |
Coating
| Diameter, mm | Minimum Weight for Coating Area g/mm3 | ||
| A | B | C | |
| 1.60~1.90 | 210 | 420 | 630 |
| ﹥1.90~2.30 | 220 | 440 | 660 |
| ﹥2.30~2.70 | 230 | 460 | 690 |
| ﹥2.70~3.10 | 240 | 480 | 720 |
| ﹥3.10~3.50 | 260 | 520 | 780 |
| ﹥3.50~3.90 | 270 | 540 | 810 |
| ﹥3.90~4.50 | 275 | 550 | 825 |
| ﹥4.50~4.80 | 300 | 600 | 900 |
Chemical Components
| Element | Content/% |
| C | 0.50~0.85 |
| Mn | 0.50~1.10 |
| P (max.) | 0.035 |
| S (max.) | 0.045 |
| Si | 0.10~0.35 |
Mechanical
| Diameter, in | Min. Tensile for 1% Elongation, Kai | Ultimate Tensile Strength , Minimum Ksi | 10in or 250mm Elongation Percentage, minimum% | ||||||
| A | B | C | A | B | C | A | B | C | |
| 0.500~0.0899 | 190 | 180 | 170 | 210 | 200 | 190 | 3.0 | 3.0 | 3.0 |
| 0.900~0.1199 | 185 | 175 | 165 | 205 | 195 | 185 | 3.5 | 3.0 | 3.0 |
| 0.12~0.1399 | 180 | 170 | 160 | 205 | 195 | 185 | 4.0 | 3.0 | 3.0 |
| 0.1400~0.1900 | 170 | 160 | 155 | 200 | 185 | 185 | 4.0 | 4.0 | 4.0 |
Mechanical
| Diameter, mm | Min. Tensile for 1% Elongation, Mpa | Ultimate Tensile Strength , Minimum Mpa | 10in or 250mm Elongation Percentage, Minimum% | ||||||
| A | B | C | A | B | C | A | B | C | |
| 1.60~2.30 | 1310 | 1240 | 1170 | 1450 | 1380 | 1310 | 3 | 3 | 3 |
| ﹥2.30~3.05 | 1280 | 1210 | 1170 | 1450 | 1380 | 1310 | 3 | 3 | 3 |
| ﹥3.05~3.60 | 1240 | 1170 | 1100 | 1410 | 1340 | 1280 | 4 | 3 | 3 |
| ﹥3.60~4.80 | 1170 | 1100 | 1070 | 1380 | 1280 | 1240 | 4 | 4 | 4 |
Default Stress for 1% Elongation
| Diameter, in | Default Stress, Kai | Default Set Point of Extensometer，in/in |
| 0.0500~0.0899 | 14 | 0.0005(0.05% elongated) |
| 0.0900~0.1199 | 28 | 0.0010(0.10%elongated) |
| 0.1200~0.1900 | 42 | 0.0015(0.15%elongated) |
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