Cr3C2 PURE
Grade · default condition
PURE = cr3C2 pure
Choose for maximum hardness and oxidation resistance: spray powder feedstock, WC-Co grain inhibitor, hot-pressed test bodies.
Values for the PURE condition
Other Cr3C2 tempers and conditions
Cr3C2 is listed in 4 conditions; see the grade overview at Cr3C2.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Cr3C2–20 % NiCr, HVOF-sprayed coating | Higher carbide fraction for more abrasive/erosive service where slightly lower coating toughness is acceptable. | — | 110 | 0.15 | 950 HV | 11 W/m·K |
Cr3C2–25 % NiCr (80/20 NiCr binder), HVOF-sprayed coating | The standard high-temperature wear/erosion coating — best toughness and thermal-shock tolerance of the blends, for boiler tubes, valves and turbine hardware to ~870 °C. | — | 120 | 0.2 | 900 HV | 10 W/m·K |
PUREDefaultThis page Cr3C2 pure | Choose for maximum hardness and oxidation resistance: spray powder feedstock, WC-Co grain inhibitor, hot-pressed test bodies. | — | 200 | 0 | 1,400 HV | 19 W/m·K |
Cr3C2–NiCr sintered cermet | Pick when a bulk corrosion/wear part (seal ring, nozzle, gauge) is needed rather than a coating — tougher and denser than monolithic Cr3C2. | — | — | — | 1,200 HV | 17 W/m·K |
What is Cr3C2 PURE?
Cr3C2 PURE is Cr3C2 in the PURE grade — choose for maximum hardness and oxidation resistance: spray powder feedstock, WC-Co grain inhibitor, hot-pressed test bodies. Cr3C2 PURE has a tensile strength of 200 MPa (29 ksi), stronger than 60% of ceramic grades. Elongation at break is 0% and the elastic modulus is 373 GPa (54.1 Msi). Cr3C2 PURE has a density of 6.68 g/cm³ (0.241 lb/in³), heavier than 70% of ceramic grades. It melts at 1,810°C (3,290 °F).
Cr3C2 PURE properties
Typical room-temperature values for Cr3C2 PURE; 14 are specific to this condition. Other listed values are Cr3C2 reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
Cr3C2 PURE has a density of 6.68 g/cm³ (0.241 lb/in³), heavier than 70% of ceramic grades. It melts at 1,810°C (3,290 °F).
Mechanical13
Cr3C2 PURE has a tensile strength of 200 MPa (29 ksi), stronger than 60% of ceramic grades. Elongation at break is 0% and the elastic modulus is 373 GPa (54.1 Msi).
Thermal5
Cr3C2 PURE is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 19 W/m·K (11 BTU/hr·ft·°F), worse than 56% of ceramic grades. Thermal expansion is 10.3 µm/m·K (5.72 µin/in·°F).
Electrical2
Cr3C2 PURE has an electrical resistivity of 7.5×10⁻⁷ Ω·m.
Chemical & Environmental2
Corrosion resistance is excellent (85/100), better than 69% of ceramic grades.
Sustainability3
Producing a kilogram of Cr3C2 PURE takes about 95 MJ of energy and emits 7.5 kg of CO₂ — less than 57% of ceramic grades. Typical recycled content is 5%.
Manufacturability3
Cr3C2 PURE's machinability is not recommended (4/100, worse than 85% of ceramic grades).
Common Calculations4
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Cr3C2 PURE
Is Cr3C2 easy to machine?
Bulk carbide and sprayed coatings are finished only by diamond grinding, lapping or EDM (the material is electrically conductive, so wire/sinker EDM works well).
Can Cr3C2 be welded?
Not weldable; coatings are applied by HVOF/HVAF/plasma spray and repaired by masking and re-spraying, PTA overlays use NiCr-Cr3C2 composite rod.
Can Cr3C2 be formed, bent or molded?
Powder route only — press-and-sinter or hot press/SPS at 1400–1800 °C; spray powders are made by agglomeration-sintering or blending with 20–25 % NiCr.
What surface finishes work on Cr3C2?
Coatings are ground and superfinished to Ra <0.2 µm for seal/rod service; sealing with epoxy or Cr-free sealants improves corrosion barrier at low temperature.
Cr3C2 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cstoichiometric total carbon; free carbon typically <0.3 % | 13 – 13.6 | 13.3 |
| Fetypical powder impurity | ≤ 0.5 | 0.2 |
| Osurface oxygen on fine powders | ≤ 0.5 | 0.2 |
| Cr≈86.7 wt % nominal | balance | — |
Cr3C2 PURE — frequently asked
What is Cr3C2 PURE used for?
Cr3C2 PURE is typically used for thermal spray coatings, hot-gas erosion shields, boiler tube protection, wear-resistant hardfacing and valve seat coatings. In short: hot-wear thermal spray standard; oxidation-resistant to 1000 °C; tougher NiCr-bonded cermet.
What is the tensile strength of Cr3C2 PURE?
Cr3C2 PURE has a typical tensile strength of 200 MPa (29 ksi) — stronger than 60% of ceramic grades. Strength varies by condition: see the 4 listed tempers.
Is Cr3C2 PURE easy to machine?
Not especially — machinability is rated not recommended (4/100, worse than 85% of ceramic grades). Bulk carbide and sprayed coatings are finished only by diamond grinding, lapping or EDM (the material is electrically conductive, so wire/sinker EDM works well).
Can Cr3C2 PURE be welded?
Not weldable; coatings are applied by HVOF/HVAF/plasma spray and repaired by masking and re-spraying, PTA overlays use NiCr-Cr3C2 composite rod.
What surface finishes work on Cr3C2 PURE?
Coatings are ground and superfinished to Ra <0.2 µm for seal/rod service; sealing with epoxy or Cr-free sealants improves corrosion barrier at low temperature.
Can Cr3C2 PURE be formed, bent or molded?
Powder route only — press-and-sinter or hot press/SPS at 1400–1800 °C; spray powders are made by agglomeration-sintering or blending with 20–25 % NiCr.
What is the maximum service temperature of Cr3C2 PURE?
Cr3C2 PURE is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ASM Handbook Vol. 4 / Engineered Materials Handbook — Ceramics and Glasses — ASM International (1991)
- Handbook of Refractory Carbides and Nitrides — Noyes/Elsevier (Pierson) (1996)
- Cr3C2-NiCr HVOF thermal spray powder datasheets — Oerlikon Metco / Praxair Surface Technologies (2022)
- GB/T 5314 / GB/T 26050 powder and thermal-spray material test practice — SAC (2020)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.