Titanium Ti Grade 37
UNS R52815 · ASTM Grade 37
Ti Grade 37 (UNS R52815) is a low-alloy titanium grade positioned in strength between CP Grade 2 and Grade 3 while retaining excellent formability and weldability.
Reference datasheet — Ti Grade 37 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the Annealed condition
Ti Grade 37 tempers and conditions
Ti Grade 37 is supplied in 5 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Rolled + Annealed | Heavy plate condition for pressure-vessel shells, tubesheets and clad/loose-lining work. | 335 | 440 | 24 | 165 HB | 3.1 % IACS |
As-welded deposit | Welded-and-annealed tube per ASTM B338/B862 where cost matters more than the seamless premium. | 345 | 445 | 22 | 175 HB | 3.1 % IACS |
AnnealedDefault mill annealed sheet, plate, bar and tube | Standard supply condition for ASTM B265/B338/B348 Grade 37; pick for forming, welding and pressure-vessel fabrication. | 350 | 450 | 25 | 170 HB | — |
Cold Rolled + Annealed | Choose for plate-heat-exchanger plates and thin pressed parts needing a clean, flat, deep-drawable surface. | 360 | 460 | 24 | 175 HB | 3.1 % IACS |
Cold Worked + Stress Relieved | Higher-strength condition for cold-drawn condenser/heat-exchanger tubing where wall thickness is minimised. | 480 | 550 | 15 | 205 HB | 3 % IACS |
What is Ti Grade 37?
Ti Grade 37 (UNS R52815) is a low-alloy titanium grade positioned in strength between CP Grade 2 and Grade 3 while retaining excellent formability and weldability. It is used for formed and welded pressure equipment, with annealed, cold-rolled annealed, hot-rolled annealed, cold-worked stress-relieved and as-welded conditions on file. Typical annealed values are 350 MPa yield, 450 MPa tensile, 25 % elongation, 170 HB / 86 HRB and service to 300 °C, with weldability rated 88 and formability 72. Machinability remains low (rating 32); where higher strength is needed, move to an alpha-beta alloy. Ti Grade 37 has a density of 4.48 g/cm³ (0.162 lb/in³), lighter than 71% of titanium grades. It melts at 1,650°C (3,002 °F). Ti Grade 37 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 79% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
What is Ti Grade 37 used for?
- Formed pressure-vessel components
- Process piping and elbows
- Welded tank shells and heads
- Heat-exchanger plates and shells
- Formed sheet-metal ducting for corrosive service
- Flanges and pipe fittings
Advantages
- Conducts heat well — 17 W/m·K (9.82 BTU/hr·ft·°F), better than 84% of titanium grades
- Ductile — tolerates forming and impact — 25%, better than 82% of titanium grades
- Tough — resists crack growth — 80 MPa·√m (72.8 ksi·√in), better than 81% of titanium grades
- Forms and bends easily — 72/100, better than 78% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 350 MPa (50.8 ksi), worse than 79% of titanium grades
Ti Grade 37 properties
Typical room-temperature values for Ti Grade 37-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 37 has a density of 4.48 g/cm³ (0.162 lb/in³), lighter than 71% of titanium grades. It melts at 1,650°C (3,002 °F).
Mechanical16
Ti Grade 37 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 79% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 37 is rated for continuous service to 300°C (572 °F). It conducts heat at 17 W/m·K (9.82 BTU/hr·ft·°F), better than 84% of titanium grades. Thermal expansion is 8.8 µm/m·K (4.89 µin/in·°F).
Electrical3
Ti Grade 37 conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 37 takes about 650 MJ of energy and emits 38 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Ti Grade 37's machinability is poor (32/100, better than 70% of titanium grades); weldability excellent (88/100); formability very good (72/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. Ti Grade 37 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 37
Is Ti Grade 37 easy to machine?
Machine like CP Ti: low surface speed (~30–45 m/min carbide), heavy positive rake, sharp tools, generous flood coolant and no dwell — work hardens and galls, and fine chips are a fire hazard.
Can Ti Grade 37 be welded?
Excellent GTAW/plasma/EB weldability with matching or CP filler; requires trailing shield and back purge to keep the weld and HAZ below ~500 °C in air and interstitial pickup low.
Can Ti Grade 37 be formed, bent or molded?
Cold forms readily but with high springback and a bend radius of about 2.5–3 t; warm forming at 200–350 °C sharply reduces springback and cracking.
Ti Grade 37 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 |
|---|---|---|
| Alalloying addition that reduces hydrogen absorption | 1 – 2 | 1.5 |
| Fe | ≤ 0.3 | 0.1 |
| Ointerstitial; main strength driver | ≤ 0.25 | 0.12 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| Hlower limits often specified for thin sheet | ≤ 0.02 | 0.01 |
| Residuals, each | ≤ 0.1 | |
| Residuals, total | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on Ti Grade 37?
Pickle in HNO3/HF after hot work to strip alpha case, then colour anodise, glass-bead or electropolish; avoid iron contamination from steel tooling to preserve corrosion performance.
Surface treatments FabDigit runs on titanium parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Titanium Ti Grade 37 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R52815
- ASTM
- Grade 37
How much does Ti Grade 37 cost?
Ti Grade 37 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Ti Grade 37 — frequently asked
What is Ti Grade 37 used for?
Ti Grade 37 is typically used for formed pressure-vessel components, process piping and elbows, welded tank shells and heads, heat-exchanger plates and shells, formed sheet-metal ducting for corrosive service and flanges and pipe fittings. In short: weldable pressure-grade titanium; formability of CP titanium; strength above Grade 2.
What is the yield strength of Ti Grade 37?
Ti Grade 37 has a typical yield strength of 350 MPa (50.8 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 79% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 37 easy to machine?
Not especially — machinability is rated poor (32/100, better than 70% of titanium grades). Machine like CP Ti: low surface speed (~30–45 m/min carbide), heavy positive rake, sharp tools, generous flood coolant and no dwell — work hardens and galls, and fine chips are a fire hazard.
Can Ti Grade 37 be welded?
Yes — weldability is rated excellent (88/100). Excellent GTAW/plasma/EB weldability with matching or CP filler; requires trailing shield and back purge to keep the weld and HAZ below ~500 °C in air and interstitial pickup low.
What surface finishes work on Ti Grade 37?
Pickle in HNO3/HF after hot work to strip alpha case, then colour anodise, glass-bead or electropolish; avoid iron contamination from steel tooling to preserve corrosion performance.
Can Ti Grade 37 be formed, bent or molded?
Cold forms readily but with high springback and a bend radius of about 2.5–3 t; warm forming at 200–350 °C sharply reduces springback and cracking.
What is the maximum service temperature of Ti Grade 37?
Ti Grade 37 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 Ti Grade 37 Annealed and Ti Grade 37 CWSR?
Annealed is the default condition — standard supply condition for ASTM B265/B338/B348 Grade 37; pick for forming, welding and pressure-vessel fabrication. CWSR: higher-strength condition for cold-drawn condenser/heat-exchanger tubing where wall thickness is minimised. Yield strength is 350 MPa in Annealed versus 480 MPa in CWSR.
How much does Ti Grade 37 cost?
Ti Grade 37 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM B265 — Titanium and Titanium Alloy Strip, Sheet, and Plate — ASTM International (2020)
- ASTM B348 — Titanium and Titanium Alloy Bars and Billets — ASTM International (2021)
- ASTM B338 — Seamless and Welded Titanium Tubes for Condensers and Heat Exchangers — ASTM International (2021)
- ASTM B862 — Titanium and Titanium Alloy Welded Pipe — ASTM International (2019)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- Titanium mill product data (low-alloy corrosion grades) — Kobe Steel / TIMET (2020)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.