Titanium Ti-15-3-CR (Cold rolled)
Supply condition
UNS R58153, R58150 · also 4914, 4913
Order as-rolled, unaged strip and foil when 960 MPa yield is enough and the part must still take bends, then age it later to develop maximum strength.
Values for the CR condition
Other Ti-15-3 tempers and conditions
Ti-15-3 is listed in 4 conditions; see the grade overview at Ti-15-3.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Solution treated at about 790–815 °C and air or water quenched, this soft single-phase beta state is the delivery condition for cold rolling, deep drawing, roll forming and welding, with ageing done afterwards. | 790 | 820 | 20 | 27 HRC | — |
CRThis page Cold rolled | Order as-rolled, unaged strip and foil when 960 MPa yield is enough and the part must still take bends, then age it later to develop maximum strength. | 960 | 1,000 | 8 | 33 HRC | 1.2 % IACS |
Solution treated and aged | Age at 480–540 °C for 8–24 h once forming and welding are complete to reach 1240 MPa yield for fasteners, springs and load-bearing parts; elongation falls to 7% and machining gets harder. | 1,240 | 1,300 | 7 | 43 HRC | — |
Cold worked and aged | Combine cold rolling with a 480–540 °C age for the highest strength, 1380 MPa yield, in thin-section springs, washers and clamps; elongation is only 4% and further forming is not practical. | 1,380 | 1,450 | 4 | 46 HRC | — |
What is Ti-15-3-CR?
Ti-15-3-CR is Ti-15-3 supplied in the CR condition — order as-rolled, unaged strip and foil when 960 MPa yield is enough and the part must still take bends, then age it later to develop maximum strength. Ti-15-3-CR has a yield strength of 960 MPa (139 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of titanium grades. Elongation at break is 8% and the elastic modulus is 85 GPa (12.3 Msi). Ti-15-3-CR has a density of 4.76 g/cm³ (0.172 lb/in³), heavier than 92% of titanium grades. It melts at 1,600°C (2,912 °F). O is the default condition FabDigit quotes; CR is available on request or by drawing note.
Advantages
- High strength — 960 MPa (139 ksi), better than 90% of titanium grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 100% of titanium grades
- Limited ductility — 8%, worse than 99% of titanium grades
- Low stiffness — 85 GPa (12.3 Msi), worse than 95% of titanium grades
- High embodied carbon — 48 kg CO₂/kg, worse than 95% of titanium grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 83% of titanium grades
Ti-15-3-CR properties
Typical room-temperature values for Ti-15-3-CR; 22 are specific to this condition. Other listed values are Ti-15-3 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti-15-3-CR has a density of 4.76 g/cm³ (0.172 lb/in³), heavier than 92% of titanium grades. It melts at 1,600°C (2,912 °F).
Mechanical15
Ti-15-3-CR has a yield strength of 960 MPa (139 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of titanium grades. Elongation at break is 8% and the elastic modulus is 85 GPa (12.3 Msi).
Thermal6
Ti-15-3-CR is rated for continuous service to 200°C (392 °F). It conducts heat at 8.1 W/m·K (4.68 BTU/hr·ft·°F), better than 52% of titanium grades. Thermal expansion is 8.5 µm/m·K (4.72 µin/in·°F).
Electrical3
Ti-15-3-CR conducts electricity at 1.2 % IACS, worse than 55% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), worse than 77% of titanium grades.
Sustainability4
Producing a kilogram of Ti-15-3-CR takes about 750 MJ of energy and emits 48 kg of CO₂ — more than 95% of titanium grades. Typical recycled content is 20%.
Manufacturability7
Ti-15-3-CR's machinability is poor (17/100, worse than 89% of titanium grades); weldability good (65/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti-15-3-CR
Is Ti-15-3 easy to machine?
Machinability is poor: use low surface speed with heavy feed, rigid workholding, sharp carbide or coated carbide tooling and high-pressure flood coolant. The aged condition is harder still, so avoid dwelling in the cut, which work-hardens the surface and promotes built-up edge.
Can Ti-15-3 be welded?
Weld in the solution-treated condition by GTAW, plasma arc or electron beam under inert gas or vacuum, then solution treat or age the assembly to restore joint properties. Oil, grease and air contamination must be excluded completely.
Can Ti-15-3 be formed, bent or molded?
Cold formability is excellent in the solution-treated condition — room-temperature deep drawing, roll forming and cold rolling to foil are all practical. Age after forming; do not bend material that has already been aged.
What surface finishes work on Ti-15-3?
Shot peening, HNO3/HF pickling for descaling, colour anodizing and painting all work. Conventional electroplating is not suitable; for fretting wear use ion nitriding or solid-film lubricant coatings.
Ti-15-3 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 |
|---|---|---|
| Vβ-stabilizing element | 14 – 16 | 15 |
| Cr | 2.5 – 3.5 | 3 |
| Alα-stabilizer, age-hardening | 2.5 – 3.5 | 3 |
| Sn | 2.5 – 3.5 | 3 |
| Fe | ≤ 0.25 | 0.1 |
| O | ≤ 0.13 | 0.1 |
| C | ≤ 0.05 | — |
| N | ≤ 0.05 | — |
| Hsheet/strip product | ≤ 0.02 | — |
| Ti | balance | — |
Ti-15-3-CR — frequently asked
What is Ti-15-3-CR used for?
Ti-15-3-CR is typically used for aerospace springs, fasteners and golf shafts. In short: cold-formable β titanium.
What is the yield strength of Ti-15-3-CR?
Ti-15-3-CR has a typical yield strength of 960 MPa (139 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Ti-15-3-CR easy to machine?
Not especially — machinability is rated poor (17/100, worse than 89% of titanium grades). Machinability is poor: use low surface speed with heavy feed, rigid workholding, sharp carbide or coated carbide tooling and high-pressure flood coolant. The aged condition is harder still, so avoid dwelling in the cut, which work-hardens the surface and promotes built-up edge.
Can Ti-15-3-CR be welded?
Yes — weldability is rated good (65/100). Weld in the solution-treated condition by GTAW, plasma arc or electron beam under inert gas or vacuum, then solution treat or age the assembly to restore joint properties. Oil, grease and air contamination must be excluded completely.
What surface finishes work on Ti-15-3-CR?
Shot peening, HNO3/HF pickling for descaling, colour anodizing and painting all work. Conventional electroplating is not suitable; for fretting wear use ion nitriding or solid-film lubricant coatings.
Can Ti-15-3-CR be formed, bent or molded?
Cold formability is excellent in the solution-treated condition — room-temperature deep drawing, roll forming and cold rolling to foil are all practical. Age after forming; do not bend material that has already been aged.
What is the maximum service temperature of Ti-15-3-CR?
Ti-15-3-CR is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti-15-3-O and Ti-15-3-CRA?
O is the default condition — solution treated at about 790–815 °C and air or water quenched, this soft single-phase beta state is the delivery condition for cold rolling, deep drawing, roll forming and welding, with ageing done afterwards. CRA: combine cold rolling with a 480–540 °C age for the highest strength, 1380 MPa yield, in thin-section springs, washers and clamps; elongation is only 4% and further forming is not practical. Yield strength is 790 MPa in O versus 1,380 MPa in CRA.
Can FabDigit make parts in Ti-15-3-CR?
Yes — Ti-15-3-CR is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- AMS 4914 — Titanium Alloy Sheet, Strip and Plate 15V-3Cr-3Al-3Sn, Solution Heat Treated — SAE International (2018)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
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.