HIGH-TEMPERATURE MOLYBDENUM ALLOY
TZC Molybdenum Alloy
Manufacturer-controlled sourcing for TZC bar, plate and parts to drawing.
MNK-G.S.A sources TZC only after the proposed manufacturer composition, production route, product form, dimensions, condition, inspection documents and application requirements have been reviewed.
TZC Is Not Automatically Interchangeable with TZM
TZC is a titanium–zirconium–carbon strengthened molybdenum-alloy family intended for demanding high-temperature service. Published compositions vary by source, so the abbreviation alone does not define one universal chemistry or standard. Manufacturer documentation and the customer’s governing requirement control acceptance.
Material Definition and Supply Scope
TZC Composition: Named Catalogue Example
The CMCOMTS TZC product page states Mo balance with Ti 1.2–1.5 %, Zr 0.1–0.2 % and C 0.1–0.2 %. The source does not specify whether these percentages are by mass or by atoms. This is that publisher’s declared composition, not a universal TZC definition or proof of ASTM conformity. Technical sources and limitations.
Bar and Rod
Long products sourced by exact manufacturer grade, diameter, length, condition, surface and requirements for machining or thermal processing.
Plate and Sheet
Flat products sourced by composition, thickness, width, length, rolling condition, surface and inspection requirements.
Forging and Die Blanks
Billets and blanks for high-temperature tooling require review of processing route, grain structure, heat treatment, geometry and expected load case.
Machined Components
Finished parts require an approved drawing, starting stock, tolerances, surface finish, inspection and traceability plan.
Alternative Mo Alloys
TZM, MoLa, MHC and other molybdenum alloys are separate material routes. Substitution requires documented technical approval.
Typical Global Sourcing Range
TZC is sourced to an agreed composition and product specification. The source-specific examples below are not MNK stock or a universal manufacturing range.
| Product Form | Typical Global Sourcing Range | Notes |
|---|---|---|
| Wire | Custom dimensions | Subject to exact composition, specification and source capability. |
| Rod / Bar | Custom dimensions | Diameter, length, condition and tolerance are confirmed for the selected manufacturer grade. |
| Sheet / Plate | Custom dimensions | Thickness, width, length and rolling condition require individual confirmation. |
| Forgings / Die Blanks | According to specification | Tooling, weight and processing limits are source-specific. |
| Finished Parts | According to drawing | Manufacturing feasibility is confirmed before quotation. |
No unified public TZC min/max envelope is claimed. TZC is not automatically interchangeable with TZM.
Actual availability depends on grade, specification, quantity, tolerances, certification requirements and manufacturing source. Diameter, thickness, width and length must be confirmed as one complete combination.
Supplier-Specific TZC Processing Examples
CMCOMTS publishes a dedicated TZC product page and a separate catalogue covering TZM/TZC together. The rows below distinguish those sources. A combined-family table is not independent confirmation for an exact TZC composition and full size. Technical sources and limitations.
| Published programme | Size example | Qualification |
|---|---|---|
| CMCOMTS TZC product page: bar | Ø1–150 mm | Declared diameter range only. Confirm chemistry, length, delivery condition and tolerance separately. |
| CMCOMTS TZC product page: plate | Published plate size: 0.5–50 mm | The source column is labelled “Plate / mm” without naming the dimensional axis. Confirm thickness, width, length, condition and tolerances; do not treat this as a verified thickness specification. |
| CMCO catalogue, combined TZM/TZC: rod | Ø4–120 mm; catalogue length entry: 1200 mm (source notation “-1200”; confirm the allowed length) | Shared family table. It does not prove that every complete combination is available in the requested TZC chemistry. |
| CMCO catalogue, combined TZM/TZC: plate | Thickness 0.1–12 mm; width 160–450 mm; length 600–1500 mm | Thickness, width and length endpoints must not be combined without manufacturer confirmation. |
| CMCO catalogue, combined TZM/TZC: circular blank | Ø20–600 mm; source column “Length”: 6–25 mm | Large diameter does not imply availability at every thickness, composition or condition. |
CMCO catalogue, printed page 13 (PDF page 8), visually checked on 15 October 2026. The shared TZM/TZC sizes and separate nominal TZC composition below use the shared registry. Catalogue examples are not guaranteed combinations, stock or batch acceptance limits. The circular-blank value is labelled Length in the source, not Thickness. CMCO catalogue - TZM & TZC alloy, printed page 13 (No printed revision date; printed p. 13 (PDF p. 8); visually checked 2026-10-15, p. Printed p. 13 (PDF p. 8), Main Specification: Rod)
MNK-G.S.A verifies the exact Ti, Zr and C content, balance molybdenum, production route, dimensions, condition, mechanical-property requirements and inspection documents for the selected source. No ASTM, EN or DIN equivalence is inferred from the TZC name alone.
Standards and Documentation
Manufacturer Datasheet
TZC identity is controlled by the selected manufacturer composition, processing route, condition and certified test requirements.
Composition Variability
The separate CMCO catalogue gives nominal TZC as Mo + 1.2 % Ti + 0.3 % Zr + 0.1 % C. Its Zr value differs from the dedicated product page above. Do not merge the two declarations: obtain the current approved datasheet and batch chemistry for the offered material. Technical sources and limitations.
No Automatic TZM Equivalence
TZC is not declared equivalent to ASTM TZM grades. Any comparison must address chemistry, route, form, condition and properties.
ASTM Scope Review
ASTM B386/B386M-25 and B387/B387M-23 distinguish flat products from bar, rod and wire. Their TZM grades 363/364 must not be assigned to TZC solely because it also contains Mo, Ti and Zr.
EN 10204:2004
Inspection-document type may be requested together with agreed chemistry, mechanical or physical properties, dimensions and traceability.
Customer Specification
For critical tooling or high-temperature service, the customer drawing, acceptance criteria, test plan and approved manufacturer datasheet govern supply.
Application Context
High-Temperature Tooling
Die and tooling blanks for thermally demanding metal-processing operations, subject to grade and load-case validation.
Thermal Processing Components
Parts used in high-temperature equipment where strength, creep behaviour, atmosphere and thermal cycling must be assessed together.
Custom Engineered Parts
Machined components produced from approved TZC stock under drawing, inspection and traceability controls.
Capability Note
Published dimensional ranges describe demonstrated manufacturing capability across specialist sources, not guaranteed stock and not one universal mill envelope. Diameter, thickness, width, length, condition, tolerance and quantity must be confirmed as one complete combination for each inquiry.
Technical Sources and Revision
Composition and the two size examples from the dedicated CMCOMTS TZC product page were rechecked on . These five values are displayed from the shared technical registry. This review does not extend to the separate CMCO catalogue or the other references.
Technical source review: 15 September 2026. Document dates below are separate from this review date. Public references do not imply a partnership, MNK stock or guaranteed availability.
TZC Property Example: Manufacturer Bar Data
Read each manufacturer reference below together with its specimen, test temperature and limitations. The applicable conditions and source are linked to each value; these examples are not universal acceptance criteria for TZC.
| Test temperature | Tensile strength | Elongation |
|---|---|---|
| Room temperature | Published tensile strength: 820 MPa CMCOMTS TZC, 30 mm diameter bar; CMCOMTS Co., Ltd.. CMCOMTS catalogue example for a 30 mm diameter TZC bar at room temperature (no exact temperature given). Test method, specimen direction, heat treatment and guarantee basis are not stated. Not a minimum acceptance limit; do not transfer to plate, another diameter or another TZC composition. Source: CMCOMTS - TZC Molybdenum Alloy product page (Web page; no document revision stated; checked 2026-10-11, p. Specifications and Performance: 30 mm bar; UTS, room temperature). Reviewed: 2026-10-11. | Published elongation: 20 % CMCOMTS TZC, 30 mm diameter bar; CMCOMTS Co., Ltd.. CMCOMTS catalogue example for a 30 mm diameter TZC bar at room temperature (no exact temperature given). Test method, specimen direction, heat treatment, gauge length and guarantee basis are not stated. Not a minimum acceptance limit; do not transfer to plate, another diameter or another TZC composition. Source: CMCOMTS - TZC Molybdenum Alloy product page (Web page; no document revision stated; checked 2026-10-11, p. Specifications and Performance: 30 mm bar; elongation, room temperature). Reviewed: 2026-10-11. |
| Specified temperature | Published tensile strength: 500 MPa CMCOMTS TZC, 30 mm diameter bar; CMCOMTS Co., Ltd.. CMCOMTS catalogue example for a 30 mm diameter TZC bar at 1000 °C. Test method, specimen direction, heat treatment and guarantee basis are not stated. Not a minimum acceptance limit; do not transfer to plate, another diameter or another TZC composition. Source: CMCOMTS - TZC Molybdenum Alloy product page (Web page; no document revision stated; checked 2026-10-11, p. Specifications and Performance: 30 mm bar; UTS, 1000 C). Reviewed: 2026-10-11. | Published elongation: 20 % CMCOMTS TZC, 30 mm diameter bar; CMCOMTS Co., Ltd.. CMCOMTS catalogue example for a 30 mm diameter TZC bar at 1000 °C. Test method, specimen direction, heat treatment, gauge length and guarantee basis are not stated. Not a minimum acceptance limit; do not transfer to plate, another diameter or another TZC composition. Source: CMCOMTS - TZC Molybdenum Alloy product page (Web page; no document revision stated; checked 2026-10-11, p. Specifications and Performance: 30 mm bar; elongation, 1000 C). Reviewed: 2026-10-11. |
Sources and scope
- CMCOMTS, dedicated TZC product page: composition, rod/plate dimensions and a bar property example; no document revision shown
- CMCO catalogue, TZM/TZC section: shared dimensional programme and a different nominal TZC composition; revision date not established
- ASTM B386/B386M-25: official scope for flat products and grade definitions
- ASTM B387/B387M-23: official record for bar, rod and wire
Related materials and comparisons
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