Titanium CP-Ti Powder for MIM-GR4
Grade
UNS R50250 · ASTM F2885
GR4 = grade 4 chemistry
Pick when the highest unalloyed-Ti strength is needed (dental/surgical instruments); ductility and impact toughness drop markedly.
Values for the GR4 condition
Other CP-Ti Powder for MIM tempers and conditions
CP-Ti Powder for MIM is listed in 6 conditions; see the grade overview at CP-Ti Powder for MIM.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Grade 1 chemistry | Pick for maximum ductility, formability of sintered blanks and best corrosion performance; lowest strength of the CP grades. | 280 | 380 | 24 | 125 HB | 3.4 % IACS |
Sintered + vacuum stress-relief anneal | Pick when dimensional stability after sizing/coining or machining is needed; slight strength drop, small ductility gain, no pore closure. | 350 | 460 | 18 | 152 HB | 3.1 % IACS |
MIM-ASDefault Moulded, debound and vacuum sintered | Default supply condition for MIM CP-Ti parts: 96–99 % dense, properties comparable to annealed wrought Grade 2 except reduced fatigue and ductility. | 380 | 480 | 15 | 160 HB | — |
Grade 2 chemistry | The workhorse MIM CP-Ti chemistry: best balance of strength, ductility and cost; matches the default grade properties. | 380 | 480 | 15 | 160 HB | 3.1 % IACS |
Sintered then hot isostatically pressed | Pick for fatigue-critical or implant parts: HIP closes residual pores, raising density to ≥99.5 % and roughly doubling fatigue life. | 420 | 520 | 20 | 165 HB | 16 W/m·K |
GR4This page Grade 4 chemistry | Pick when the highest unalloyed-Ti strength is needed (dental/surgical instruments); ductility and impact toughness drop markedly. | 520 | 620 | 11 | 22 HRC | 2.8 % IACS |
What is CP-Ti Powder for MIM-GR4?
CP-Ti Powder for MIM-GR4 is CP-Ti Powder for MIM in the GR4 grade — pick when the highest unalloyed-Ti strength is needed (dental/surgical instruments); ductility and impact toughness drop markedly. CP-Ti Powder for MIM-GR4 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of titanium grades. Elongation at break is 11% and the elastic modulus is 104 GPa (15.1 Msi). CP-Ti Powder for MIM-GR4 has a density of 4.4 g/cm³ (0.159 lb/in³), lighter than 98% of titanium grades. It melts at 1,668°C (3,034 °F). MIM-AS is the default condition FabDigit quotes; GR4 is available on request or by drawing note.
Limitations
- Needs corrosion protection — 82/100, worse than 100% of titanium grades
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 98% of titanium grades
- Limited formability — 14/100, worse than 97% of titanium grades
- High embodied carbon — 48 kg CO₂/kg, worse than 95% of titanium grades
- Difficult to weld — 48/100, worse than 89% of titanium grades
CP-Ti Powder for MIM-GR4 properties
Typical room-temperature values for CP-Ti Powder for MIM-GR4; 23 are specific to this condition. Other listed values are CP-Ti Powder for MIM reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
CP-Ti Powder for MIM-GR4 has a density of 4.4 g/cm³ (0.159 lb/in³), lighter than 98% of titanium grades. It melts at 1,668°C (3,034 °F).
Mechanical16
CP-Ti Powder for MIM-GR4 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of titanium grades. Elongation at break is 11% and the elastic modulus is 104 GPa (15.1 Msi).
Thermal6
CP-Ti Powder for MIM-GR4 is rated for continuous service to 300°C (572 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), better than 59% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
CP-Ti Powder for MIM-GR4 conducts electricity at 2.8 % IACS, better than 56% of titanium grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), worse than 100% of titanium grades.
Sustainability4
Producing a kilogram of CP-Ti Powder for MIM-GR4 takes about 750 MJ of energy and emits 48 kg of CO₂ — more than 95% of titanium grades. Typical recycled content is 10%.
Manufacturability7
CP-Ti Powder for MIM-GR4's machinability is poor (22/100, worse than 55% of titanium grades); weldability fair (48/100); formability not recommended (14/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CP-Ti Powder for MIM-GR4
Is CP-Ti Powder for MIM easy to machine?
Sintered CP-Ti machines like wrought Grade 2 — low speed, high feed, sharp uncoated carbide and flood coolant; avoid dwelling (work-hardening and fire risk from fine chips/powder).
Can CP-Ti Powder for MIM be welded?
GTAW/laser/resistance welding under full argon shielding works well on HIPed parts; as-sintered porosity can outgas and cause weld porosity, so pre-bake and use HIPed material for critical joints.
Can CP-Ti Powder for MIM be formed, bent or molded?
Feedstock at 50–62 vol % solids, mould 160–190 °C tool 30–50 °C; solvent/catalytic + thermal debinding then vacuum (<10⁻² Pa) or high-purity Ar sintering at 1250–1350 °C with 13–18 % linear shrinkage — never sinter in nitrogen or on graphite without a Y₂O₃ barrier.
What surface finishes work on CP-Ti Powder for MIM?
Bead blasting, tumbling, chemical etch (HNO₃/HF) for oxide removal, then Type II colour or Type III anodising; passivation per ASTM F86 for medical parts, PVD/DLC and plasma nitriding also used for wear.
CP-Ti Powder for MIM 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 |
|---|---|---|
| OPowder usually supplied at ≤0.18 % to leave headroom for pickup during debinding/sintering; Grade 1 ≤0.18, Grade 4 ≤0.40 | ≤ 0.25 | 0.18 |
| N | ≤ 0.03 | 0.02 |
| CResidual binder carbon must be controlled by thermal/catalytic debinding | ≤ 0.08 | 0.03 |
| HHDH powder may run higher before vacuum degassing | ≤ 0.02 | 0.01 |
| FeGrade 1 (R50250) ≤0.20 | ≤ 0.3 | 0.1 |
| TiBalance; each other element ≤0.10, total ≤0.40 | balance | — |
CP-Ti Powder for MIM-GR4 — frequently asked
What is CP-Ti Powder for MIM-GR4 used for?
CP-Ti Powder for MIM-GR4 is typically used for surgical instrument components, watch cases, small precision hardware and dental parts. In short: near-net-shape small titanium parts; wrought-like CP Ti properties; lowest-cost complex Ti geometry.
What is the yield strength of CP-Ti Powder for MIM-GR4?
CP-Ti Powder for MIM-GR4 has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of titanium grades. Strength varies by condition: see the 6 listed tempers.
Is CP-Ti Powder for MIM-GR4 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 55% of titanium grades). Sintered CP-Ti machines like wrought Grade 2 — low speed, high feed, sharp uncoated carbide and flood coolant; avoid dwelling (work-hardening and fire risk from fine chips/powder).
Can CP-Ti Powder for MIM-GR4 be welded?
With care — weldability is rated fair (48/100). GTAW/laser/resistance welding under full argon shielding works well on HIPed parts; as-sintered porosity can outgas and cause weld porosity, so pre-bake and use HIPed material for critical joints.
What surface finishes work on CP-Ti Powder for MIM-GR4?
Bead blasting, tumbling, chemical etch (HNO₃/HF) for oxide removal, then Type II colour or Type III anodising; passivation per ASTM F86 for medical parts, PVD/DLC and plasma nitriding also used for wear.
Can CP-Ti Powder for MIM-GR4 be formed, bent or molded?
Feedstock at 50–62 vol % solids, mould 160–190 °C tool 30–50 °C; solvent/catalytic + thermal debinding then vacuum (<10⁻² Pa) or high-purity Ar sintering at 1250–1350 °C with 13–18 % linear shrinkage — never sinter in nitrogen or on graphite without a Y₂O₃ barrier.
What is the maximum service temperature of CP-Ti Powder for MIM-GR4?
CP-Ti Powder for MIM-GR4 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CP-Ti Powder for MIM MIM-AS and CP-Ti Powder for MIM-GR4?
MIM-AS is the default condition — default supply condition for MIM CP-Ti parts: 96–99 % dense, properties comparable to annealed wrought Grade 2 except reduced fatigue and ductility. GR4: pick when the highest unalloyed-Ti strength is needed (dental/surgical instruments); ductility and impact toughness drop markedly. Yield strength is 380 MPa in MIM-AS versus 520 MPa in GR4.
Sources
- ASTM B988 — Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components — ASTM International (2023)
- ASTM F2885 — Metal Injection Molded Titanium-6Aluminum-4Vanadium Components for Surgical Implant Applications — ASTM International (2022)
- ASTM F67 / ASTM B348 — Unalloyed Titanium (Grades 1–4) chemistry and mechanical requirements — ASTM International (2021)
- MPIF Standard 35 — Materials Standards for Metal Injection Molded Parts — Metal Powder Industries Federation (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys; Vol. 7 — Powder Metallurgy — ASM International (2015)
- CP-Ti spherical powder datasheets (AP&C, Tekna, , / ) — various producers (2024)
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.