ASTM a 82 for Plain Steel Wire for Concrete Reinforcement

ASTM A82 Steel Wire, Plain, for Concrete Reinforcement

Tension Test Requirements

Tensile strength, min, ksi (MPa) 80 (550)
Yield strength, min, ksi (MPa) 70 (485)
Reduction of area, min, % 30 A
A For material testing over 100 ksi (690 MPa) tensile strength, the reduction of area shall be not less than 25 %.

Tension Test Requirements (Material for Welded Wire Reinforcement)

Size W1.2
and Larger
Smaller
than Size W1.2
Tensile strength, min, ksi (MPa) 75 (515) 70 (485)
Yield strength, min, ksi (MPa) 65 (450) 56 (385)
Reduction of area, min, % 30 A 30 A
A For material testing over 100 ksi (690 MPa) tensile strength, the reduction of area shall be not less than 25 %.

Permissible Variation in Wire Diameter

Size Number Nominal Diameter, mm Permissible
Variation Plus
and Minus, mm
Smaller than W5 under 6.40 0.08
W5 to W12, incl 6.40 to 9.93, incl 0.10
Over to W20, incl over 9.93 to 12.83, incl 0.15
Over W20 over 12.83 0.20

Dimensional Requirements for Plain Wire—SI Units, Wire Sizes

Size Number A Nominal Diameter mm (in.) Nominal Area mm2 (in.2)
MW 5 2.50 (0.100) 5 (0.008)
MW 10 3.60 (0.142) 10 (0.016)
MW 15 4.40 (0.173) 15 (0.024)
MW 20 5.00 (0.197) 20 (0.030)
MW 25 5.60 (0.220) 25 (0.039)
MW 30 6.20 (0.244) 30 (0.046)
MW 35 6.70 (0.264) 35 (0.054)
MW 40 7.10 (0.280) 40 (0.062)
MW 45 7.60 (0.299) 45 (0.070)
MW 50 8.00 (0.315) 50 (0.077)
MW 55 8.40 (0.331) 55 (0.085)
MW 60 8.70 (0.343) 60 (0.093)
MW 65 9.10 (0.358) 65 (0.101)
MW 70 9.40 (0.370) 70 (0.108)
MW 80 10.1 (0.397) 80 (0.124)
MW 90 10.70 (0.421) 90 (0.139)
MW 100 11.30 (0.445) 100 (0.155)
MW 120 12.40 (0.488) 120 (0.186)
MW 130 12.90 (0.508) 130 (0.201)
MW 200 15.95 (0.628) 200 (0.310)
MW 290 19.22 (0.757) 290 (0.450)

Dimensional Requirements for Plain Wire—Inch-pound Units, Wire Sizes

Size Number A Nominal Diameter in. (mm) Nominal Area in.2(mm2)
W 0.5 0.080 (2.03) 0.005 (3.23)
W 1.2 0.124 (3.15) 0.012 (7.74)
W 1.4 0.134 (3.40) 0.014 (9.08)
W 2 0.160 (4.06) 0.020 (12.90)
W 2.5 0.178 (4.52) 0.025 (16.13)
W 2.9 0.192 (4.88) 0.029 (18.70)
W 3.5 0.211 (5.36) 0.035 (22.58)
W 4 0.226 (5.74) 0.040 (25.81)
W 4.5 0.239 (6.07) 0.045 (29.03)
W 5 0.252 (6.40) 0.050 (32.26)
W 5.5 0.265 (6.73) 0.055 (35.48)
W 6 0.276 (7.01) 0.060 (38.71)
W 8 0.319 (8.10) 0.080 (51.61)
W 10 0.357 (9.07) 0.100 (64.52)
W 12 0.391 (9.93) 0.120 (77.42)
W 14 0.422 (10.72) 0.140 (90.32)
W 16 0.451 (11.46) 0.160 (103.25)
W 18 0.479 (12.17) 0.180 (116.13)
W 20 0.505 (12.83) 0.200 (129.03)
W 22 0.529 (13.44) 0.220 (141.90)
W 24 0.533 (14.05) 0.240 (154.80)
W 26 0.575 (14.61) 0.260 (167.70)
W 28 0.597 (15.16) 0.280 (180.60)
W 30 0.618 (15.70) 0.300 (193.50)
W 31 0.628 (15.95) 0.310 (200.00)
W 45 0.757 (19.23) 0.450 (290.32)

A This table represents the most readily available sizes in the welded wire reinforcement industry in sizes using inch-pound units. Areas of wire should be checked with the most efficient and readily available material from producers. Other wire sizes are available and many manufacturers can produce them in 0.0015-in.2 increments.