Nickel Matrix: Density 8.1-8.5 g/cm³, Melting Point 1350-1450°C

Component Specifications

Definition

The nickel matrix in forging-grade nickel-based superalloy powder refers to the continuous nickel-rich metallic phase that forms the structural backbone of the material. This matrix typically contains solid solution strengthening elements like chromium, cobalt, and molybdenum, along with precipitation hardening phases. It serves as the primary load-bearing component, maintaining mechanical properties at elevated temperatures up to 1000°C while resisting creep, oxidation, and thermal fatigue in demanding forging applications.

Working Principle

The nickel matrix operates through solid solution strengthening and precipitation hardening mechanisms. Nickel's face-centered cubic (FCC) crystal structure provides inherent ductility and toughness, while alloying elements dissolved in the matrix enhance strength through lattice strain. During heat treatment, coherent precipitates form within the matrix, creating obstacles to dislocation movement and significantly increasing high-temperature strength and creep resistance.

Materials

Primary composition: Nickel (≥50 wt%), Chromium (15-22%), Cobalt (5-15%), Molybdenum (3-8%), Aluminum (2-5%), Titanium (1-3%), with trace elements of Tungsten, Tantalum, and Niobium. Must maintain γ (gamma) phase stability with controlled γ' (gamma-prime) precipitation.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	8.1-8.5 g/cm³
Melting Point	1350-1450°C
Nickel Content	≥50 wt%
Thermal Expansion Coefficient	12-15 × 10⁻⁶/K (20-1000°C)
Room Temperature Yield Strength	≥750 MPa
Creep Rupture Life (850°C/300 MPa)	≥100 hours
Oxidation Resistance (1000°C/100h)	≤0.5 mm depth
High Temperature Yield Strength (850°C)	≥550 MPa

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 5832-11, ASTM F3055, AMS 5662, DIN 17742

Parent Products

This component is used in the following industrial products

Forging-Grade Nickel-Based Superalloy Powder

Fine metallic powder for hot isostatic pressing and forging of high-temperature components

View Product Details

Engineering Analysis

Risks & Mitigation

Gamma prime phase instability at excessive temperatures
Sigma phase formation causing embrittlement
Thermal fatigue cracking
Oxidation degradation above 1000°C
Hot corrosion in sulfur-containing environments

FMEA Triads

Trigger: Incorrect heat treatment leading to excessive gamma prime precipitation
Failure: Reduced ductility and increased notch sensitivity
Mitigation: Implement controlled solution and aging treatments with precise temperature control (±5°C)

Trigger: Exposure to temperatures above 1100°C for extended periods
Failure: Gamma prime phase dissolution and strength degradation
Mitigation: Design with thermal barrier coatings and cooling channels for critical components

Trigger: Contamination with sulfur or lead during processing
Failure: Hot corrosion and intergranular attack
Mitigation: Maintain clean processing environment and implement material traceability systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Chemical composition: ±0.5% for major elements, ±0.1% for minor elements. Microstructure: Gamma prime phase size 0.2-0.5 μm with uniform distribution.

Test Method

Chemical analysis via ICP-OES, microstructure evaluation via SEM/EDS, mechanical testing per ASTM E8/E21, creep testing per ASTM E139, oxidation testing per ASTM G54

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

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Manufacturers of Nickel Matrix

Manufacturer profiles associated with Nickel Matrix.

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Frequently Asked Questions

What is the primary function of the nickel matrix in forging-grade superalloy powder?

The nickel matrix provides the fundamental structural framework, offering high-temperature strength, creep resistance, and oxidation protection while maintaining ductility and toughness for demanding forging applications.

How does the nickel matrix achieve high-temperature performance?

Through solid solution strengthening with chromium and cobalt, combined with precipitation hardening from γ' (gamma-prime) phases formed by aluminum and titanium, creating obstacles to dislocation movement at elevated temperatures.

What industries primarily use nickel matrix superalloy components?

Aerospace (turbine blades, discs), power generation (gas turbine components), chemical processing (high-temperature reactors), and automotive (turbocharger wheels) industries.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Nickel Matrix