ASTM A500 Grade C

ASTM A500 Grade C

Cold-Formed ASTM A500 Grade C Hollow Section belongs to world-class material and grade. This ASTM A500 hollow section covers up different kinds of sizes, lengths as well as shapes so that customers are able to buy it as per their requirements. This hollow section is actually used for structural supports, communication towers, highway signs, oil field services as well as building columns. It is extremely easy to get, install and use the product. Also, it doesn’t need extra care as well as maintenance for a longer duration of time. Experts design this hollow section using different machinery and some modern skills.

PRODUCT FEATURES

Chemical Requirements of ASTM A500 Grade C

Element

Grace C
Product Analysis

Carbon, max

0.27

Manganese, max

1.40

Phosphorus, max

0.045

Sulfur, max

0.045

Copper, when copper steel is specified, min

0.18

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% by heat analysis and 1.60% by-product analysis.

b. If copper-containing steel is specified in the purchase order.

ASTM A500 Grade C Carbon Steel Mechanical Properties

ASTM A500 Grade C mechanical properties

Wall Thickness

±10%

Squareness of Sides

90°±2°

External Corner Radius

R≤3WT

Twist

H≤38.1mm

±1.3mm/1m length

38.1mm<H≤63.5mm

±1.6mm/1m length

63.5mm<H≤101.6mm

±1.9mm/1m length

101.6mm<H≤152.4mm

±2.2mm/1m length

152.4mm<H≤203.2mm

±2.5mm/1m length

H>203.2mm

±2.8mm/1m length

Straightness

10.4mm/1000mm in length

Length

+50mm/-0mm

Tensile Requirements of ASTM A500 Grade C

Round structural tubing

 

Grade C

Tensile strength, min, psi (MPa)

62,000 (425)

Yield strength, min, psi, (MPa)

46,000 (315)

Elongation in 2 in. (50 mm), min, %D

21C

Shaped structural tubing

 

Grade C

Tensile strength, min, psi (MPa)

62,000 (425)

Yield strength, min, psi, (MPa)

50,000 (345)

Elongation in 2 in. (50 mm), min, %D

21C

a. Applies to specified wall thicknesses (t) equal to or greater than 0.120 in. (3.05 mm). For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. (50mm) = 56t + 17.5, rounded to the nearest percent. For A500M use the following formula: 2.2t + 17.5, rounded to the nearest percent.

b. Applies to specified wall thicknesses (t) equal to or greater than 0.180 in. (4.57 mm). For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. (50 mm) = 61t + 12, rounded to the nearest percent. For A500M use the following formula: 2.4t + 12, rounded to the nearest percent.

c. Applies to specified wall thicknesses (t) equal to or greater than 0.120 in. (3.05 mm). For lighter specified wall thicknesses, the minimum elongation values shall be by agreement with the manufacturer.

d. The minimum elongation values specified apply only to tests performed prior to shipment of the tubing.

Permissible Variations in Dimensions of ASTM A500 Grade C

-Outside Dimensions of ASTM A500 Grade C Pipes

ASTM A500 Grade C Round Structural Tubing

The outside diameter shall not deviate more than 60.5 percent, rounded to the nearest 0.005 in. [0.1 mm], from the specified outside diameter for specified outside diameters of 1.900 in. [48 mm] and less, and 60.75 percent, rounded to the nearest 0.005 in. [0.1 mm], for specified outside diameters of 2.00in. [5 cm]. Outside diameter measurements must be made at a distance of at least two inches [five centimeters] from the tube ends.

ASTM A500 Grade C Square and Rectangular Structural Tubing

Outside dimensions, as measured across the flats at least 2in. [5cm] from the tube ends, should not depart from the necessary outside dimensions by more than the tolerance for convexity or concavity.

- Wall Thickness of ASTM A500 Grade C Pipes

At any point of measurement, the minimum wall thickness of the ASTM A500 Grade C tube shall not be less than 10% of the specified wall thickness. The maximum wall thickness of welded tubing shall not exceed 10% of the required wall thickness, excluding the weld seam.

Square and rectangular tube wall thickness specifications must be applied entirely to the flats’ centers.

-Length of ASTM A500 Grade C Pipes

Structural tubing is frequently made in random lengths of more than 5ft [1.5m], multiple lengths, and specialty lengths. Consult Section 4. When ordering certain lengths, compliance with the length tolerance is required.

-Straightness of ASTM A500 Grade C Pipes

For ASTM A500 Grade C structural tubes, the permissible variation must be 1/8in. times the number of feet [10 mm times the number of meters] divided by 5.

-Squareness of Sides of ASTM A500 Grade C Pipes

The adjacent sides of ASTM A500 Grade C square and rectangular structural tubes must be square (90°), with a maximum deviation of 62° permitted.

-Radius of Corners of ASTM A500 Grade C Pipes

Each outer corner radius of a square or rectangular structural tubing segment should not exceed three times the wall thickness necessary.

-Twist of ASTM A500 Grade C Pipes

With ASTM A500 Grade C square and rectangular structural tube, the twist tolerances specified in the standard shall apply. Twist shall be determined by clamping one end of the tubing to a flat surface plate, measuring the height of each corner on the bottom side of the tubing above the surface plate near the opposite ends of the tubing, and calculating the twist (the difference in the heights of such corners), with the exception that for heavier sections, a suitable measuring device may be used to determine twist. Twist measurements must not be taken within two inches [five centimeters] of the tubing’s ends.

TUSPIPE ASTM A500 Grade C Marking

  • The following information must be legibly inscribed on each length of ASTM A500 GradeC structural tubing: manufacturer’s name, brand, or trademark; specification designation (year of issuance is not necessary); and grade letter.
  • The information given in (1) may be marked on a tag firmly connected to each bundle for ASTM A500 GradeC structural tubing with a specified outer diameter or big flat dimension of 4 in. [10 cm] or less.
  • Bar Coding—In addition to the standards in (1) and (2), the manufacturer must be able to use bar coding as an additional way of identification. When a purchase order specifies a certain bar-coding system, that system must be used.

NOTE—In the absence of a purchase order specifying a different bar-coding method, it is suggested that bar coding adhere to AIAG Standard B-1.

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