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Galfan Zn-5% Al Mischmetal coating Steel


Zinc-5%Aluminum mischmetal alloy galvanized steel wire is used for Power Transmission and Distribution Line Hardware,Slope protection、Undersea optical cable armoured with low carbon galvanized steel wire,Overhead Electrical Conductors.



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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
MORE

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
MORE

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

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