ASTM A283 Grade C & D Plate Specification

ASTM A283 is the standard for low and intermediate tensile strength carbon steel plates, it covers Grade C and D, both applied for general structural construction.

ASTM A283 Grade C Steel Plate

A283 steel plates could be produced by plate type and coil type, in case it made from coil type and furnished without heat treatment or with stress relieving only, the addtional requirements, including additional test methods and test result, shall comply with A6/A6M specification.

Reference Standards:

  • ASTM A6/A6M: For general requirements for rolled structural steel bars, plates, shaples and sheet piles.

ASTM A283 Plates Data Sheet

Chemical Composition of ASTM A283 Grade C & D

Table 1:

Elements

Heat Analysis, %


Grade C

Grade D

Carbon, max

0.24

0.27

Manganese, max

0.90

0.90

Phosphorus, max

0.030

0.030

Sulfur, max

0.030

0.030

Silicon

Plates 1-1/2in. [40mm] and under, max

Plates over 1-1/2in. [40mm]


0.40

0.15-0.40


0.40

0.15-0.40

Copper, min % when copper is specified

0.20

0.20

Mechanical Properties

Table 2:


Grade C

Grade D

Tensile strength, ksi [MPa]

55-75

60-80 [415-550]

Yield point, min, ksi [Mpa]

30

33 [230]

Elongation in 8 in. [200 mm], min, %B

22

20

Elogination in 2 in. [50mm], min, %B

25

23

B: For plates wider than 24 in. [600 mm], the elgonation requirement is reduced 2%.

Manufacturing Process of ASTM A283 Grade C & D Plate

The steel shall be killed and made by one or more of the following processes:

  • Open-hearth
  • Basic-oxygen
  • Electric furnace

General Requirements for Delivery

ASTM A283 plates shall comply with A6/A6M, coils are exlcuded from this specification until they are cutted to finished plates. 

Keywords

Carbon Steel; Plates, Coils; Structal Quality.

Supplementary Requirements under A283

These are not applied unless agreed by the buyer and seller, which listed in Specfication of A6/A6M.

S2. Product Analysis
S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons.
S5. Charpy V-Notch Impact Test
S6. Drop Weight Test (For thickness equal and above 16mm [0.625in])
S8. Ultrasonic Examination.
S15. Reduction of Area.

Our Supply Range:

Description: Carbon Steel ASTM A283 Grade C & D
Manufacturing Types: Hot Rolled
Thickness: 2 to 150 mm
Width: 0.6m to 3m
Length: 6m, 12m, customized
Surface: Natural, Painted
Packing: Standard sea packing, bundled with streel strip.

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