Blog
  2. ASTM
  3. Washers
  4. ASTM A588/A588M Specification

ASTM A588/A588M Specification

Washers, Sheets, Plates, Rings

Scope

ASTM A588/A588M Specifications covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability are important. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon structural steels with or without copper addition. When properly exposed to the atmosphere, this steel is suitable for many applications in the bare (unpainted) condition. This specification is limited to material up to 8 in. [200 mm] inclusive in thickness.

Related Specifications of ASTM A588/A588M

ASTM F436

ASTM A588/A588M Chemical Composition

Element C Mn P S C Si Ni Cr Mo Cu V Nb D
ASTM A588/A588M Grade A 0.19 max 0.801.25 0.030 max 0.030 max 0.30-0.65 0.40 max 0.40-0.65 ... 0.25-0.40 0.02-0.10 ...
ASTM A588/A588M Grade B 0.20 max 0.75-1.35 0.030 max 0.030 max 0.15-0.50 0.50 max 0.40-0.70 ... 0.20-0.40 0.01-0.10 ...
ASTM A588/A588M Grade K 0.17 max 0.50-1.20 0.030 max 0.030 max 0.25-0.50 0.40 max 0.40-0.70 0.10 max 0.30-0.50 ... 0.005-0.05B
  • A For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 %.
  • B For plates under 1⁄2 in. [13 mm] in thickness, the minimum columbium (niobium) is waived.
  • C A maximum phosphorus content of 0.04 % and a maximum sulfur content of 0.05 % are permitted for the following materials:
  • · Structural shapes
  • · Bars
  • · Plates with widths up to and including 15 in. [380 mm]
  • D Columbium (Cb) and niobium (Nb) are considered interchangeable names for the same element and both names are acceptable.

ASTM A588/A588M Mechanical Requirements

Requirements For Thicknesses 4 in. [100 mm] and Under Plates and Bars For Thicknesses
Over 4 in. [100 mm] to 5 in. [125 mm] incl		 For Thicknesses Over 5 in. [125 mm]
to 8 in.[200 mm] incl		 Structural Shapes All
Tensile strength, min,ksi [MPa] 70 [485] 67 [460] 63 [435] 70 [485]
Yield point, min,ksi [MPa] 50 [345] 46 [315] 42 [290] 50 [345]
Elongation in 8 in. [200 mm], min, % 18B,C ... ... 18C
Elongation in 2 in. [50 mm], min, % 21B,C 21B,C 21B,C 21D
    A See specimen orientation under the Tension Tests section of Specification A6/A6M.
    • B Elongation not required to be determined for floor plate.
    • C For plates wider than 24 in. [600 mm], the elongation requirement is reduced two percentage points. See elongation requirement adjustments in the Tension Tests section of Specification A6/A6M.
    • D For wide flange shapes with flange thickness over 3 in. [75 mm], elongation in 2 in. [50 mm] of 18 % minimum applies.

ASTM A588/A588M Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM A588/A588M Supplementary Requirements

S2 Product Analysis
S3 Simulated Post-Weld Heat Treatment of Mechanical Test Coupons
S5 Charpy V-Notch Impact Test
S6 Drop-Weight Test (for Material 0.625 in [16 mm] and over in Thickness)
S8 Ultrasonic Examination
S15 Reduction of Area Measurement
S18 Maximum Tensile Strength
S30 Charpy V-Notch Impact Test for Structural Shapes: Alternate Core Location
S32 Single Heat Bundles