ASTM B535 /ASME SB535 / Nickel Iron Chromium Silicon Alloys (UNS N08330 AND N08332) Seamless Pipe And Tube supplier & distributor in India

ASTM B-535 / ASME SB-535
SPECIFICATION FOR NICKEL IRON CHROMIUM SILICON ALLOYS
(UNS N08330 AND N08332) SEAMLESS PIPE AND TUBE

1.Scope

1.1 This specification covers alloys UNS N08330 and N08332 in the form of hto-finished and cold-finshed deamless pipe and tube intended for heat resisting aplicstions and general corrosive service.

1.2 The values stated in inch-pound units are to be considered as the standard.

The values given in parentheses are for information only. Heat Treatment - The material shall be furnished in the annealed condition. The final heat treatment of UNS N08330 shall be 1900 (1040?) minimum. The final heat treatment of UNS N08332 shall be 2100? (1150?) minimum.

TABLE1 CHEMICAL REQUIREMENTS

Element	Composition Limits, %	Product(check) Analysis Variation, under imn or over max of the Specified Limit of Element
C	...A	0.01
Mn	2.00max	0.04
P	0.03max	0.005
S	0.03max	0.005
Si	0.75-1.50	0.05 under;
		0.10 over
Cr	17.0-20.0	0.25
Ni	34.0-37.0	0.30
Cu	1.00max	0.04
Pb	0.005max	...
Sn	0.025max	...
Fe	remainderB	...

A Alloy UNS N08330: 0.08max. Alloy UNS N08332: 0.05-0.10. BElement shall be determined arithmetically by difference.

TABLE2 MECHANICAL PROPERTIES

Alloy	Condition	Tensile Strength, min, psi(MPa)	Yield Strength, 0.2% offset, min, psi(MPa)	Elongation in 2 in. or 50 mm or 4D, min, %	HardnessA
UNS N08330	annealed	70000(483)	30000(207)	30	70 to 90 HRB
UNS N08332	annealed	67000(462)	27000(186)	30	60 to 88 HRB

AHardness are imformative only and not to be construed as the basis for acceptance.

TABLE3 PERMISSIBLE VARIATIONS IN OUTSIDE DIAMETER HOT-FINISHED AND COLD-FINISHED PIPE

Nominal Pipe Size, in.	Permissible Variations in Outside Diameter
	Over		Under
	in.	mm	in.	mm
1/8 to 1 1/2, incl	1/64	0.4	1/32	0.8
Over 1 1/2 to 4,incl	1/32	0.8	1/32	0.8
Over 4 to 8, incl	1/16	1.6	1/32	0.8
Over 8 to 18, incl	3/32	2.4	1/32	0.8

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