Inconel 713C Nickel Alloy Plate
Product Introduction
At temperatures around 900°C, Inconel 713C nickel alloy plates possess excellent creep and fatigue resistance approaching that of cast parts, but are virtually impossible to cold-form.
Inconel 713C is essentially a precipitation-hardening nickel-based cast superalloy. Commercially available "sheet metal" is typically produced using powder metallurgy processes, such as hot isostatic pressing (HIP), or specialized casting and rolling processes to approximate its form. Its existence primarily addresses two issues:
Making ceramic cores or molds for investment casting, used for casting turbine blades and guide vanes.
Directly machining certain relatively simple high-temperature static components that require properties consistent with castings.
Procurement Specifications and Industry Standards
Our purchasing experience shows that when procuring Inconel 713C Nickel Alloy Plate, clear communication of details is essential to avoid trade disputes. This typically includes the following points:
1. Standard Selection:
Gold Standard: AMS 5392. This is the aerospace material specification, defining the highest requirements for chemical composition, mechanical properties, and quality.
Practical Standard: Relevant sections of ASTM B637 can be referenced, but numerous special requirements must be added.
Contract Wording: "The material must conform to the latest version of AMS 5392 and meet the following special technical agreements…".
2. Precision of Specification Description:
Condition: Must specify "Hot Isostatic Pressed (HIP) + Standard Heat Treated" or "Cast + Heat Treated". Never simply state "Annealed.
Dimensions and Tolerances: Due to extremely poor machinability, dimensional requirements must be realistic. Thickness tolerances should be wider than for ordinary sheet metal; for example, ±0.5mm tolerance for a 10mm sheet.
Special Requirements: Must clearly state "No porosity or inclusions upon low-magnification microstructure inspection" and "Guaranteed high-temperature creep performance value".
3. Documentation Requirements:
MTC Certificate: Must be EN 10204 Type 3.1.
Additional Reports: Suppliers must provide a "High Temperature Durability Test Report" (for samples from the same furnace) and an "Ultrasonic Testing Report" (according to AMS 2631 Class A or negotiated level).
Manufacturing Process and Challenges
Our machining experience shows that Inconel 713C alloy exhibits only single-digit elongation during machining. This material is extremely brittle, similar to hard ceramics, thus prohibiting cold forming techniques such as stamping and bending. It also possesses extremely high wear resistance, meaning that machining 713C alloy causes severe wear on cutting tools. Therefore, the only solution is to perform "subtractive" machining: using only grinding, electrical discharge machining (EDM), or low-speed, deep-depth milling/turning. This ensures that the material's properties are not compromised during machining.
Purchasing requires understanding the processing characteristics, as this relates to the final product quality and potential problems arising from secondary processing. Whether purchasing raw materials, machining simple parts, or precision-machined parts, the following points should be noted by skilled machining personnel regarding secondary processing:
1. Tool Selection: Silicon nitride ceramic or cubic boron nitride (CBN) tools must be used; carbide tools will not last long.
2. Process Selection: Extremely low speed, large depth of cut, slow feed rate to allow heat to be carried away by the chips. Sufficient coolant is essential.
3. Grinding Method: The primary finishing method. Specialized grinding wheels must be used. Grinding burns must be strictly prevented, as they can cause micro-cracks on the surface that propagate at high temperatures.
4. Electrical Discharge Machining (EDM): An effective method for machining complex shapes, but care must be taken to ensure that the remelted layer is removed through subsequent polishing or etching.
For more information, please contact:
Email: susan@lorkgroup.com
WhatsApp: +86 19937075488
Chemical Composition
Keep a close eye on the aluminum-titanium ratio and trace elements
| Weight% | Inconel 713C |
| Ni | Bal |
| Cr | 12.0 - 14.0% |
| Mo | 3.5 - 5.5% |
| Ai | 5.5 - 6.5% |
| Ti | 0.3 - 1.0% |
| Nb | 1.5 - 2.5% |
Procurement warning: For Alloy 713C, the reported boron (B) and zirconium (Zr) content are more important than the main elements. Suppliers without reliable trace element data should be rejected outright.
Mechanical Properties
The performance of plate metal is highly dependent on the production process (HIP state or casting + heat treatment state), and the state must be locked in the contract.
| Room temperature performance | (HIP + solution + aged state) |
| Tensile Strength MPa | ≥ 895 MPa |
| Yield Strength MPa | ≥ 760 MPa |
| Reduction of Area % | ≥ 6% |
| Hardness HRC | Approximately 32-38 HRC |
High-Temperature Performance (Core Value):
High-Temperature Creep Strength: This is a mandatory test item and a core point of negotiation. For example, the contract must specify: creep rupture life ≥ 80 hours under 850°C/350MPa stress. This is its "passport" for service in turbines.
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