E Cast UNS N24130 Nickel-Copper Alloy,Cast Grade M-30C;1

### **Product Introduction: E Cast UNS N24130 (M-30C) High-Strength Nickel-Copper Alloy** **Overview** Cast UNS N24130, commercially known under the cast grade **M-30C**, is a precipitation-hardenable nickel-copper alloy designed to deliver high strength and excellent corrosion resistance. It is the cast counterpart to the well-established wrought alloy UNS N05500 (MONEL® alloy K-500). The "C" designation typically indicates a composition controlled for optimal performance in specific corrosive environments. Like its wrought equivalent, M-30C derives its enhanced mechanical properties from the addition of aluminum and titanium, which allow it to be strengthened through a precipitation hardening (aging) heat treatment. This alloy is indispensable for high-stress components in marine, oil and gas, and chemical processing applications where standard nickel-copper alloys lack sufficient strength. --- #### **Chemical Composition (Typical % by Weight, per ASTM A494)** The composition of M-30C is carefully balanced for precipitation hardening while retaining excellent corrosion resistance. | Element | Content (%) | Role & Benefit | | :--- | :--- | :--- | | **Nickel (Ni)** | 63.0 min (inc. Co) | Forms the primary austenitic matrix, providing fundamental corrosion resistance and metallurgical stability. | | **Copper (Cu)** | 27.0 - 33.0 | Provides excellent resistance to seawater, sulfuric acid, and other reducing environments, forming the basis of the alloy's corrosion resistance. | | **Aluminum (Al)** | 2.30 - 3.15 | A key hardening element. It combines with nickel during the aging process to form the coherent gamma prime (γ') phase, Ni₃(Al, Ti), which is responsible for the significant increase in strength and hardness. | | **Titanium (Ti)** | 0.35 - 0.85 | Works synergistically with aluminum to form the strengthening γ' phase, enhancing the precipitation hardening effect. | | **Iron (Fe)** | 2.0 max | A controlled residual element. | | **Manganese (Mn)**| 1.5 max | Aids in castability and helps control sulfur content. | | **Carbon (C)** | 0.25 max | A residual element from the manufacturing process. | | **Silicon (Si)** | 0.50 max | A deoxidizer used in the casting process; kept low to maintain ductility. | | **Sulfur (S)** | 0.01 max | A detrimental element kept to an absolute minimum to prevent hot cracking during solidification. | *Note: "MONEL" is a registered trademark of Special Metals Corporation.* --- #### **Physical & Mechanical Properties (Typical - Aged Condition)** | Property | Value / Condition | | :--- | :--- | | **Density** | 8.44 g/cm³ (0.305 lb/in³) | | **Melting Range** | 1315 - 1350 °C (2400 - 2460 °F) | | **Thermal Expansion** | 13.9 μm/m·°C (7.7 μin/in·°F) @ 20-100°C | | **Tensile Strength** | 895 MPa (130 ksi) min | | **Yield Strength (0.2% Offset)** | 690 MPa (100 ksi) min | | **Elongation** | 10% min | | **Hardness** | Brinell 290 - 360 HBW | *Note: Mechanical properties are achieved through a specific heat treatment cycle, typically involving a solution anneal followed by a precipitation hardening (aging) treatment.* --- #### **International Standards and Specifications** Cast UNS N24130 (M-30C) is specified by major industrial and military standards for high-integrity components. * **Cast Product Standards:** * **ASTM A494 / A494M:** Standard Specification for Castings, Nickel and Nickel Alloy. (Grade M-30C) * **UNS N24130:** Unified Numbering System designation for the cast alloy. * **Military QQ-N-288 Grade E:** U.S. military specification for castings. * **Wrought Equivalent:** * **UNS N05500 (MONEL K-500):** The standard wrought form of this alloy. --- #### **Product Applications** M-30C cast components are selected for applications demanding both the corrosion resistance of a nickel-copper alloy and the strength of a precipitation-hardened material. 1. **Marine & Offshore:** * **High-strength pump shafts** and **impellers** for seawater service. * **Propeller shafts** and **marine drill collars**. * **Fasteners** and **bolting** for critical subsea connections. 2. **Oil & Gas Production:** * **Wellhead components** and **valve trim** for sour service (H₂S) environments. * **Scraper blades** and other downhole tool components requiring a combination of strength, corrosion, and wear resistance. * **Pump components** in high-pressure production systems. 3. **Aerospace & Defense:** * Non-magnetic, high-strength components for instrumentation and guidance systems. 4. **Chemical Processing:** * **Agitator shafts** and **mixer blades** in corrosive environments where high mechanical loads are present. #### **Key Advantages** * **High Strength-to-Corrosion Ratio:** Offers a superior combination of high yield strength (exceeding 690 MPa) and excellent corrosion resistance, a profile unmatched by many other alloys. * **Excellent Mechanical Properties:** Provides high tensile and fatigue strength, along with good creep rupture properties, while maintaining useful ductility in the aged condition. * **Excellent Corrosion Resistance:** Inherits the outstanding resistance of the Ni-Cu system to a wide range of corrosive media, including seawater, hydrofluoric acid, and alkalies. * **Non-Magnetic:** Remains non-magnetic over a wide range of temperatures and strength levels, which is critical for many specialized applications. **Conclusion** Cast UNS N24130 (M-30C) is a premium, precipitation-hardenable nickel-copper alloy that delivers exceptional strength without compromising the renowned corrosion resistance of the MONEL family. For critical components in marine, oil and gas, and other demanding industries where high mechanical loads are present in aggressive environments, M-30C offers a superior and reliable solution. Its compliance with ASTM A494 and military specification QQ-N-288 ensures consistent quality and performance for high-integrity cast components.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3407 gallon liquid totes Special package is available on request.