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Application
zinc–5 % aluminummischmetal (Zn–5Al–MM) alloy-coated, steel core wire for use in Overhead Electrical Conductors. ACSS ACSS/TW The high temperature low sag solution
Specification
ASTM B802 803 958
Class
Round, high strength, extra-high-strength, and ultra-high-strength, Class A B C coated
Features
operates continuously at high temperatures up to 250°C, with proper steel coating, ensuring maximum utilization and performance; standard coating for high temperature operation is a Zn-5% Al Mischmetal coating so that customers can take full advantage of the 250°C
continuous operating temperature rating. Galvanized coatings are rated only 180°C for continuous operation.
ASTM B802-02-American Society for Testing and Materials
| Specified Diameter of Coated Wire,mm | Area Density of Coating, min, oz/ft2 of Uncoated Wire Surface | ||
| Class A | Class B | Class C | |
| 0.0500 to 0.0599, incl | 0.60 | 1.20 | 1.80 |
| 0.0600 to 0.0749, incl | 0.65 | 1.30 | 1.95 |
| 0.0750 to 0.0899, incl | 0.70 | 1.40 | 2.10 |
| 0.0900 to 0.1039, incl | 0.75 | 1.50 | 2.25 |
| 0.1040 to 0.1199, incl | 0.80 | 1.60 | 2.40 |
| 0.1200 to 0.1399, incl | 0.85 | 1.70 | 2.55 |
| 0.1400 to 0.1799, incl | 0.90 | 1.80 | 2.70 |
| 0.1800 to 0.1900, incl | 1.00 | 2.00 | 3.00 |
TABLE 5 Tensile Requirements
| Specified Diameter, in. | Stress at 1 % Extension, min, Ksi | Ultimate Tensile Strength, min, MPa | Elongation in 250 mm, min, % | ||||||
| Class A | Class B | Class C | Class A | Class B | Class C | Class A | Class B | Class C | |
| 1.60 to 2.30, incl | 190 | 180 | 170 | 210 | 200 | 190 | 3.0 | 3.0 | 3.0 |
| Over 2.30 to 3.05, incl | 185 | 175 | 165 | 205 | 195 | 185 | 3.5 | 3.0 | 3.0 |
| Over 3.05 to 3.60, incl | 180 | 170 | 160 | 205 | 195 | 185 | 4.0 | 3.0 | 3.0 |
| Over 3.60 to 4.80, incl | 170 | 160 | 155 | 200 | 185 | 180 | 4.0 | 4.0 | 4.0 |
ASTM B802-10 Zn-5Al-MM Alloy Coating (Metric)
| Specified Diameter of Coated Wire, mm | Area Density of Coating, min.g/m2 of Uncoated Wire Surface | |
| Class A | Class C | |
| 1.27 to 1.52, incl | 183 | 549 |
| 1.53 to 1.90, incl | 198 | 594 |
| 1.91 to 2.28, incl | 214 | 642 |
| 2.29 to 2.64, incl | 229 | 687 |
| 2.65 to 3.04, incl | 244 | 732 |
| 3.05 to 3.55, incl | 259 | 777 |
| 3.56 to 4.57, incl | 274 | 822 |
Normal Grade Tensile Requirements (Metric)
| Specified Diameter, mm | Stress at 1 % Extension, min, MPa | Ultimate Tensile Strength, min, MPa | Elongation in 250 mm, min, % | |||
| Class A | Class C | Class A | Class C | Class A | Class C | |
| 1.27 to 2.28, incl | 1310 | 1170 | 1450 | 1310 | 3.0 | 3.0 |
| 2.29 to 3.04, incl | 1280 | 1140 | 1410 | 1280 | 3.5 | 3.0 |
| 3.05 to 3.55, incl | 1240 | 1100 | 1410 | 1280 | 4.0 | 3.0 |
| 3.56 to 4.82, incl | 1170 | 1070 | 1380 | 1240 | 4.0 | 4.0 |
ASTM B803 Tensile Requirements
| Specified Diameter | Stress at 1 % Extension, min | Ultimate Tensile Strength, min | Elongation in 10 in. or 250 mm, | |||
| in. | mm | ksi | MPa | ksi | MPa | min % |
| 0.0500 to 0.0899, incl | 1.270 to 2.283, incl | 210 | 1450 | 235 | 1620 | 3.0 |
| 0.0900 to 0.1199, incl | 2.286 to 3.045, incl | 205 | 1410 | 230 | 1590 | 3.0 |
| 0.1200 to 0.1399, incl | 3.048 to 3.553, incl | 200 | 1380 | 225 | 1550 | 3.5 |
| 0.1400 to 0.1900, incl | 3.556 to 4.823, incl | 195 | 1340 | 220 | 1520 | 3.5 |
ASTM B958-Grade 4 Extra-High-Strength Tensile Requirements (Metric)
| Specified Diameter, mm | Stress at 1% Extension, | Ultimate Tensile Strength, | Elongation in 250 mm, min % |
| min, MPa | min, MPa | ||
| 1.27 to 2.28, incl | 1550 | 1825 | 3.0 |
| 2.29 to 3.04, incl | 1515 | 1790 | 3.0 |
| 3.05 to 3.55, incl | 1480 | 1760 | 3.5 |
| 3.56 to 4.82, incl | 1450 | 1725 | 3.5 |
Grade 5 Ultra-High-Strength Tensile Requirements (Metric)
| Specified Diameter, mm | Stress at 1% Extension, | Ultimate Tensile Strength, | Elongation in 250 mm, min % |
| min, MPa | min, MPa | ||
| 1.27 to 2.28, incl | 1580 | 1965 | 3.0 |
| 2.29 to 3.04, incl | 1550 | 1900 | 3.0 |
| 3.05 to 3.55, incl | 1515 | 1860 | 3.5 |
| 3.56 to 4.82, incl | 1480 | 1825 | 3.5 |
