C/C Composite Trays

Name: C/C Composite Trays
Brand: SiC Graphite
SKU: c-c-composite-trays
Availability: InStock
Rating: 4.9 (24 reviews)

High-strength, lightweight C/C composite trays and fixtures for heat treatment and brazing. Offers significantly longer lifespan and higher load capacity than conventional graphite trays.

Target Buyer:Heat treatment plant managers and process engineers.

C/C composite tray and plate for vacuum furnace fixtures 1

Capability Highlights

Lightweight yet highly load-bearing
Excellent thermal shock resistance
Minimal warping over time

Typical Applications

Vacuum Brazing
Sintering
Heat Treatment Fixturing

Engineering Focus

Load-bearing capacity at temperature
Flatness over time
Thermal cycling durability

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Flexural Strength	> 120 MPa	Allows for thinner, lighter trays holding heavy loads.
Fiber Architecture	2D or 3D C/C composite by load direction	Fiber orientation controls strength, thread retention, and long-term deformation.
Operating Atmosphere	Vacuum or inert gas; oxidation protection if required	C/C composite strength is excellent at temperature, but oxygen exposure must be managed.
Load Case	Static load, fixture spacing, and thermal-cycle count	Tray sag, bolt shear, and creep risk depend on the real support condition.

Engineering Datasheet

Product-Level Technical Specifications

Values below are RFQ planning targets, not blanket guarantees. Final acceptance criteria should be frozen against drawings, process conditions, equipment model, and buyer qualification requirements.

Parameter	Target / Typical Scope	Engineering Note
Tray architecture	2D or 3D C/C composite tray, plate, rail, fixture, or support frame	Architecture should follow load direction, support spacing, fixture contact, and thermal-cycle stress.
Load capacity	Buyer-defined static load, distributed load, point load, and support span	A tray capacity claim has no value unless support spacing and operating temperature are defined.
Operating environment	Vacuum or inert furnace review by temperature, atmosphere, and cycle count	Oxidation exposure, cleaning steps, and quench conditions should be stated before material selection.
Flatness and warpage	Initial flatness and allowable in-service deformation by application	Heat treatment trays often fail by sagging or warping before complete fracture.
Machined features	Slots, holes, rails, pockets, locating pins, and handling notches by drawing	Machined features can concentrate stress and should be reviewed with fiber direction.
Weight reduction target	Compared against graphite, molybdenum, or refractory-metal fixture baseline	Weight reduction matters for energy use, handling, and thermal mass, but must not compromise fixture stiffness.

Trace Impurity Review Table

Semiconductor programs should define restricted elements before sample production. The table helps procurement and process teams turn purity expectations into a measurable qualification file.

Element	Typical Limit	Why Controlled
Fiber architecture	2D / 3D / reinforced route selected by load direction	Tray strength and sag resistance depend on fiber direction, not only thickness.
Density / porosity	Project-defined density and impregnation route	Density affects stiffness, oxidation behavior, machining edges, and usable service life.
Oxidation boundary	Vacuum / inert use; coating or treatment reviewed for oxygen exposure	High-temperature carbon fixtures need atmosphere control to prevent accelerated material loss.
Surface debris / edge damage	Visual acceptance and packing method defined by buyer	Large trays can abrade, chip, or shed debris if packed without separators and edge protection.

RFQ Evidence Package

These records reduce ambiguity before sample approval and repeat-order release.

Tray drawing with length, width, thickness, support span, holes, slots, rails, and handling features.
Load case defining distributed load, point load, maximum temperature, atmosphere, and cycle count.
Fiber architecture, density, and fabrication route selected against sag, creep, and thermal shock risk.
Flatness or critical dimensional record for sample approval and repeat-order release.
Export packing photos showing separators, edge protection, crate support, and orientation labels.

Equipment Compatibility Review

Compatibility should be treated as an engineering review, not a catalog claim. Equipment-family language helps buyers route the RFQ, while final production still depends on drawings, samples, coating allowance, and acceptance criteria.

Equipment Family	Compatible Part Scope	Buyer Validation Required
Vacuum heat treatment furnaces	C/C trays, plates, rails, shelves, and load-bearing support fixtures.	Confirm load distribution, support span, fixture stack, maximum temperature, atmosphere, and cycle count.
Brazing, sintering, and annealing furnaces	Lightweight C/C fixture plates, carrier trays, frames, and replacement graphite tray upgrades.	Confirm part weight, point-load zones, thermal shock exposure, flatness requirement, and handling method.
Semiconductor thermal-field maintenance	C/C carrier plates, support trays, and structural fixture components where graphite is too brittle.	Confirm cleanliness boundary, ash target if required, packing evidence, and mating carbon hardware.

Open full OEM compatibility matrix

Product Selection Logic

Decision Factor	Selection Logic	Buyer Check
Load at temperature	Choose C/C composite when graphite is too brittle or molybdenum adds too much thermal mass.	Provide load, support spacing, furnace temperature, and cycle count.
Fiber architecture	2D C/C can fit plates and trays; 3D architecture is preferred for multi-directional stress and threads.	Clarify bending direction, thread engagement, and any fastener preload.
Oxidation boundary	C/C composite is strongest in vacuum or inert environments; oxygen exposure needs protection.	Share atmosphere, leak risk, cleaning practice, and cooldown handling.

Manufacturing and QC Flow

Stage	Production / QC Checkpoint	Buyer Evidence
1. Load-case review	Define temperature, support spacing, fastener preload, tray load, and cycle count.	Application sketch, fixture drawing, load estimate, and atmosphere notes.
2. Fiber architecture	Choose 2D or 3D C/C blank according to bending, shear, and thread loads.	Material route with density and architecture recommendation.
3. Densification and machining	Process C/C blank, then machine threads, holes, plates, and tray geometry.	Dimensional report for load-bearing and assembly-critical features.
4. Strength-risk check	Review delamination, thread stripping, sag, and edge damage before shipping.	Visual inspection plus agreed mechanical evidence if required.
5. Handling and packing	Prevent abrasion and impact on lightweight C/C fixtures during export.	Packing photos and handling notes for furnace maintenance teams.

RFQ Checklist

Dimensions (L x W x H)
Maximum load per tray
Operating temperature and atmosphere

Risk Controls

Tray warping: Optimized fiber architecture (2D/3D) based on stress models.

Product Gallery

C/C composite tray and plate for vacuum furnace fixtures 2

C/C composite tray and plate for vacuum furnace fixtures 3

C/C composite tray and plate for vacuum furnace fixtures 4

C/C composite tray and plate for vacuum furnace fixtures 5

Machined carbon plate fixture for high-temperature processing 1

Machined carbon plate fixture for high-temperature processing 2

Machined carbon plate fixture for high-temperature processing 3

Machined carbon plate fixture for high-temperature processing 4

Buyer FAQ

How much weight can a C/C tray save vs graphite?

C/C trays are typically 50-70% lighter for the same load capacity, saving significant heating energy.

When is C/C composite a better choice than graphite?

Choose C/C composite when the part carries load, sees repeated thermal shock, needs threaded strength, or fails because graphite is too brittle.

What information is needed for C/C tray or fastener design?

Provide load, support spacing, maximum temperature, atmosphere, cycle count, thread standard, and the current failure mode if replacing another material.

Can C/C composite be used in oxidizing atmospheres?

C/C composite performs best in vacuum or inert gas. If oxygen exposure is expected, the application needs oxidation-risk review and possible protective treatment.

Related Resources

Procurement Next Steps

Compare the full product portfolio before locking material architecture.
Match the part to a process solution for thermal-field and contamination constraints.
Review OEM capability controls for machining, coating, purification, and export packaging.
Send a drawing-based RFQ with process, material grade, tolerances, quantity, and delivery target.

Inquiry Email

[email protected]

Email app

Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.

Instant Chat

+8618857971991

Chat on WhatsApp

Best for quick drawing checks, process fit questions, and RFQ clarification.