Corrosion and heat resistant alloy UNS N06600, W.Nr.2.4816, INCONEL® 600, VDM® Alloy 600 for aerospace

PRODUCT

Corrosion and heat resistant alloys UNS N06600 for aerospace

EQUIVALENT DESIGNATION

NS312, GH3600, W.Nr.2.4816(EN), NiCr15Fe(EN), INCONEL® 600, VDM^® Alloy 600 / 600H, NiCr15Fe8(ISO), NA 14(UK), NC15Fe(AFNOR)

OVERVIEW

UNS N06600 is a standard engineering material for applications which require resistance to corrosion and heat. The alloy also has excellent mechanical properties and presents the desirable combination of high strength and good workability. The high nickel content gives the alloy resistance to corrosion by many organic and inorganic compounds and also makes it virtually immune to chloride-ion stress-corrosion cracking. Chromium confers resistance to sulfur compounds and also provides resistance to oxidizing conditions at high temperatures or in corrosive solutions. The alloy is not precipitation hardenable; it is hardened and strengthened only by cold work.

PRODUCT FORM

Forging, plate, sheet, strip, tube and pipe, pipe fitting, bar, rod, wire etc.

APPLICATION

In the field of aeronautic, alloy N06600 is used for a variety of engine and airframe components which must withstand high temperatures. Examples are lockwire, exhaust liners and turbine seals.

For its strength, heat and corrosion resistance at high temperature, alloy UNS N06600 is used extensively in environments involving temperatures from cryogenic to above 2000℉ (1095℃). Other application fields includes chemical industry, heat-treating industry, electronic field, nuclear reactors, etc.

CHEMICAL COMPOSITION (wt%):

Note: element shall be determined arithmetically by difference.

PHYSICAL PROPERTIES

MECHANICAL PROPERTIES

A broad range of strength and hardness is obtainable with alloy UNS N06600, depending on form and condition. In the annealed condition, the alloy exhibits moderate yield strengths of 25,000 to 50,000 psi (172 to 345 MPa). Yield strengths in that range, combined with elongations of 55 to 35%, permit the alloy to be fabricated with little difficulty. Heavily cold-worked material, however can have tensile strengths as high as 220,000 psi (1517 MPa).

TENSILE STRENGTH

Nominal room temperature tensile property ranges of material in standard forms and conditions

IMPACT STRENGTH AND DUCTILITY

Alloy UNS06600 has good impact strength at room temperature and retains virtually all of that strength at low temperatures; there is no tough to brittle transition with decreasing temperature.

Impact strength values (Charpy keyhole) for 1/2 inch(13mm) thick plate at room and low temperatures

Room temperature impact strength values of rod

CREEP PROPERTIES

Creep properties of alloy UNS N06600 in two conditions are shown for temperatures to 2100℉ (1150℃)

RUPTURE PROPERTIES

Rupture properties for material in various conditions

CORROSION RESISTANCE

The composition of alloy UNS N06600 enables it to resist a variety of corrosives. The chromium content of the alloy makes it superior to commercially pure nickel under oxidizing conditions, and its high nickel content enables it to retain considerable resistance under reducing conditions. The nickel content also provides excellent resistance to alkaline solutions. The alloy has fair resistance to strongly oxidizing acid solutions. However, the oxidizing effect of dissolved air alone is not sufficient to insure complete passivity and freedom from attack by air-saturated mineral acids and certain concentrated organic acids.

MICROSTRUCTURE

Alloy UNS N06600 is a stable, austenitic solid solution alloy. The only precipitated phases present in the microstructure are titanium nitrides, titanium carbides (or solutions of those two compounds commonly called cyanonitrides), and chromium carbides.

Titanium nitrides and carbides are visible in polished microspecimens at magnifications of 50X or greater. They appear as small, randomly dispersed, angular-shaped inclusions. The color varies from orange-yellow for the nitride to gray-lavender for the carbide. These nitrides and cyanonitrides are stable at all temperatures below the melting point and are unaffected by heat treatment.

At temperatures between 1000-1800℉(540-980℃), chromium carbides precipitate out of the solid solution. Precipitation occurs both at the grain boundaries and in the matrix. Because of the grain-boundary precipitation, the corrosion behavior of alloy UNS N06600 is similar to that of other austenitic alloys in that the material can be made susceptible to intergranular attack in some aggressive media (sensitized) by exposure to temperatures of 1000-1400℉(540-760℃). At temperatures above 1400℉(760℃) the predominant carbide is Cr7C3. Below 1400℉ (760℃) the Cr23C6 carbide is also present.

STANDARD SPECIFICATION

Alloy UNS N06600 is approved under the Boiler and Pressure Vessel Code of the American Society of Mechanical Engineers. It is approved under Section I (Power Boilers), Section III (Nuclear Vessels), and Section VIII (Pressure Vessels). Allowable design stresses are found in Section II, Part D. Section I coverage is provided by Code Case 1827.

For rod, bar, wire and forging

ASTM B166 / ASME SB166

ASTM B564 / ASME SB564

ASME Code Cases 1827 and N-253

SAE AMS 5665 and 5687

BS 3075NA14 and 3076NA14

DIN 17752, 17753 and 17754

ISO 9723, 9724, and 9725,

MIL-DTL-23229

QQ-W-390.

For plate, sheet and strip

ASTM B168 / ASME SB168

ASTM B906 / ASME SB906

ASME Code Cases 1827 and N-253

SAE / AMS 5540

BS 3072NA14 and 3073NA14

DIN 17750

ISO 6208

EN 10095

MIL-DTL-23228

For pipe and tube

ASTM B167 / ASME SB167

ASTM B163 / ASME SB163

ASTM B516 / ASME SB516

ASTM B517 / ASME SB517

ASTM B751 / ASME SB751

ASTM B775 / ASME SB775

ASTM B829 / ASME SB829

ASME Code Cases 1827, N-20, N-253, and N-576

SAE AMS 5580

DIN 17751

ISO 6207

MIL-DTL-23227

COMPETITIVE ADVANTAGE

(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.
(2) 6 state key laboratories and calibration center.
(3) Hundreds of patent technologies.

BUSINESS TERM

With background of more than 50 years of material R&D experience, CMMC is a high-tech enterprise specialized in production of high temperature alloys, corrosion resistant alloys, precision alloys, wear resistant alloys, refractory alloys and other special alloys.

With main smelting equipments by CONSARC, including vacuum induction melting furnace (VIM 3 metric tons x 1 set), inert gas protective electric slag remelting furnace (IG-ESR 5 metric tons x 1 set, 10 metric tons x 2 sets), vacuum arc remelting furnace (VAR 10 metric tons x 1 set), CMMC has an annual production capacity of 3000 metric tons.

Established in 2016, CMMC stll having an investing plan of more than 30 million U.S.Dollars in the coming 5 years. CMMC aspires to become an internationally renowned supplier and leading brand of key materials for core components of high-end equipments in the application fields of aerospace, clean energy, petroleum, chemical engineering, medical, marine engineering, food and automobile, etc.

Our main products include forgings, bars, rods, tubulars, plates, sheets, strips, wire rods, precision wires, etc.

From ultra-pure smelting,  hot and cold forming, heat treatment, mechanical processing to finish machining, CMMC provides the whole process of one-stop professional services.

From demand idea to research and development, from technology innovation to promoting of products upgrading, from customer's puzzles and difficulties to final solution, from smelting to market, no matter wherever, whenever, whatever and however, CMMC always try to provide satisfactory one-stop service.

By providing better materials to make a better world, CMMC never give up the dream.