ASTM A822 / ASME SA822 / Seamless Cold Dram Carbon Steel Tubing For Hydraulic System Service supplier & distributor in India

ASTM A 822-88 / ASME SA 822

SEAMLESS COLD DRAM CARBON STEEL TUBING FOR HYDRAULIC SYSTEM SERVICE

This standard is issued under the fixed designation A 822; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
A number in parentheses indicates the year of last reapproval.
A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This specification covers nominal wall thickness, seamless, cold-drawn carbon steel tubing intended for use in hydraulic systems and in other similar applications where forming operations reuire tight radius bending and flaring.

1.2 Tubing sizes and thicknesses usually furnished to this specification are 1/8 to 3 1/2.(3.2 to 88.9 mm) in outside diameter and 0.035 to 0.134 in. (0.9 to 3.4 mm) inclusive, in nominal wall thickness. Tubing having other dimensions may be furnished, provided such tubing complies with all other requirements of this speckfication.

1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in.(3.2 mm) in inside diameter or 0.015 in. (0.4 mm) in thickness.

1.4 Optional supplementary requirements are provided and, when desired, shall be so stated in the order.

1.5 Values stated in inch-pound units are to be regarded as the standard.

TABLE 1 Chemical Requirements

Elementf	Composition, %
Carbon	0.18 max.
Manganese	0.27 to 0.63
Phosphorus	0.048 max.
Sulfur	0.058 max.

TABLE 2 Tensile Requirements

Tensile strength, min., ksi(MPa)	45 (310)
Yield strength, min., ksi(MPa)	25 (170)
Elongation, in 2in. (or 50mm), min, %	35

TABLE 3 Tubing Outside Diameter Tolerances

Nominal Tubing Outside DiameterA, in.	Outside Diameter Tolerance, in.
Up to 1	±0.004
1 to 1 1/2	±0.006
Over 1 1/2 to 2, inclusive	±0.008
Over 2 to 3 1/2, inclusive	±0.010

AThe actual outside diameter shall be the average of the maximum and minimum outside diameters
as detemined at any one cross-section through the tubing.

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