ASTM B515 / ASME SB515 / Welded UNS N08800 and UNS N08810 Alloy Tubes supplier & distributor in India

ASTM B-515 / ASME SB 515
SPECIFICATION FOR WELDED UNS N08800 AND UNS N08810 ALLOY TUBES

1.Scope

1.1 This specification covers welded UNS N08800 and UNS N08810 alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service.

1.2 This specification covers tubes 1/8 to 5 in. (3.18 to 127 mm). inclusive, in outside diameter and 0.015 to 0.500 in. (o.38 to 12.70 mm0, inclusive, in wall thickness.

Table 2 of Specification B 751 lists the dimensions requirements of these sizes. Tubes having other dimensions may be furnished provied such tubing complies with all other requirement of this specification.

1.3 The values staed in inch-pound units are to be regarded as the standard.

The SI units given in parentheses are are for information only.

TABLE1 CHEMICAL REQUIREMENTS

Element	Composition Limits, %
Nickel	30.0 min
	35.0 max
Chromium	19.0 min
	23.0 max
Iron	39.5 minA
Manganese, max	1.5
Carbon	B
Copper, max	0.75
Silicon, max	1.0
Sulfur, max	0.015
Aluminum	0.15 min
	0.60 max
Titanium	0.15 min
	0.60 max

Iron shall be determined arithmetically by difference. BAlloy UNS N08800: 0.10 max. Alloy uns N08810: 0.05 to 0.10.

TABLE2 MECHANICAL PROPERTY REQUIREMENTS

Alloy	Condition(Temper)	Tensile Strength, min, psi(MPa)	Yield Strength, 0.2% Offset, min, psi(MPa)	Elongation in 2 in or 50mm, min, %
UNS N08800	Annealed	75000(520)	30000(207)	30
UNS N08810	Annealed	65000(450)	25000(170)	30

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