This specification covers nickel alloy forgings. These alloys are classified into different grades according to their chemical composition. A chemical analysis shall be employed on each alloy in order to determine its chemical composition. Grain size and mechanical properties like tensile strength, yield strength, and elongation shall be measured. A tension test and nondestructive ultrasonic test shall be done on each specimen.

1.1 This specification2 covers forgings of:

Alloy Type

UNS Number(s)

Fe-Ni-Cr-Mo-N

N08367

Low-carbon Cr-Ni-Fe-N

R20033

Low-carbon Ni-Cr-Mo

N06035, N06058, N06059, N06044

Low-carbon Ni-Cr-Mo-Cu

N06200

Low-carbon Ni-Cr-Mo-W

N06686

Low-carbon Ni-Fe-Cr-Mo-Cu

N08031, N08034

Low-carbon Ni-Mo-Cr

N10276, N06022, N10362

Low-carbon Ni-Mo-Cr-Ta

N06210

Ni

N02200

Ni-Co-Cr-Si

N12160

Ni-Cr-Al

N06699

Ni-Cr-Co-Mo

N06617

Ni-Cr-Fe

N06600, N06603, N06690

Ni-Cr-Fe-Al

N06025

Ni-Cr-Fe-Si

N06045

Ni-Cr-Mo-Nb

N06625

Ni-Cr-Mo-Si

N06219

Ni-Cr-Mo-W

N06110

Ni-Cr-W-Mo

N06230

Ni-Cu

N04400

Ni-Fe-Cr

N08120, N08800, N08810, N08811

Ni-Fe-Cr-Mo-Cu

N08825, N08827

Ni-Fe-Cr-W

N06674

Ni-Mo

N10665, N10675, N10629

Ni-Mo-Cr-Fe

N10242, N10624

1.1.1 The nickel-iron-chromium alloys are UNS N08120, UNS N08800, UNS N08810, and UNS N08811. Alloy UNS N08800 is normally employed in service temperatures up to and including 1100 °F (593 °C). Alloys UNS N08810, N08120, and UNS N08811 are normally employed in service temperatures above 1100 °F (593 °C) where resistance to creep and rupture is required, and are annealed to develop controlled grain size for optimum properties in this temperature range.

1.1.2 Nickel-iron-chromium-tungsten alloy UNS N06674 is normally employed in service temperatures above 1100 °F (593 °C) where resistance to creep and rupture is required, and is annealed to develop optimum properties in this temperature range.

1.1.3 Nickel-chromium-molybdenum-columbium (UNS N06625) products are furnished in two grades of different heat-treated conditions:

1.1.3.1 Grade 1 (Annealed)—Material is normally employed in service temperatures up to 1100 °F (593 °C).

1.1.3.2 Grade 2 (Solution annealed)—Material is normally employed in service temperatures above 1100 °F (593 °C) where resistance to creep and rupture are required.

Note 1: Hot-working or reannealing may change properties significantly, depending on working history and temperatures.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.