Alloy Grade UNS: N-7M – Corrosion and Heat Resistant

  • Overview

    N-7M, also known as N30007, is a nickel-molybdenum alloy engineered for exceptional performance in high-temperature and corrosive environments. Its high molybdenum content, up to 33%, contributes significantly to its resistance to a wide range of corrosive media, including strong acids like hydrochloric acid. This alloy exhibits good tensile strength, maintaining its structural integrity under stress, and performs well at elevated temperatures, making it suitable for demanding applications in chemical processing and other industries where both heat and corrosion resistance are critical. Furthermore, N-7M offers good weldability and castability, providing flexibility in fabrication and design for complex components.

  • Typical Uses

    Processing equipment.

  • MetalTek Designation

    MTEK N-7M

  • Poured At:

    Carondelet Division, Sandusky International Division, Wisconsin Centrifugal Division, Wisconsin Investcast Division

Similar Specifications

Cast UNS: N30007

Wrought UNS: N10001

Cast Grade: N-7M

Cast ASTM: A494

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.07

Chromium: 1.00

Manganese: 1.00

Iron: 3.0 MAX

Copper: n/a

Nickel: BAL

Lead: n/a

Tin: n/a

Silicon: 1.00

Zinc: n/a

Other: Mo 30-33

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Solution Annealed

Frequently Asked Questions

Severe corrosion and heat resistant steel is engineered to withstand extreme environments, including high temperatures, chemical exposure, and acidic conditions.

Applications include chemical reactors, flue gas scrubbers, incinerators, and heat treatment fixtures exposed to corrosive and thermal stress.

Alloys such as Inconel, Hastelloy, Alloy 20, and super austenitic or duplex stainless steels are ideal for high-heat and corrosion-prone conditions.

Explore Other Alloys

Gears

Non-Ferrous

Non-ferrous alloys are, literally, materials that are not iron-based. While others may provide non-ferrous materials of other materials, the MetalTek family of non-ferrous alloys are copper-based. In general, these materials deliver high strength, and excellent wear and corrosion resistance. They are often found in marine applications and also bushing, bearing, and gear environments.
Stainless Steel Parts

Stainless Steel

Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface. Chromium is chiefly responsible for formation of the passive film. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to approximately 20%.
Petrochemical Fittings

Specialty Alloys

Specialty Alloys comprise a broad group of materials that deliver properties for more demanding applications, use more exotic or expensive materials, or require special processes to manufacture. Where standard materials may not offer desired performance, specialty alloys (including those that are modified further) may be a sensible selection.