Titanium Ti Grade 30 AS-WELDED
Other
UNS R53530 · ASTM Grade 30
Property basis for fabricated vessel and heat-exchanger joints made with matching Grade 30 filler under inert gas.
Values for the AS-WELDED condition
Other Ti Grade 30 tempers and conditions
Ti Grade 30 is listed in 3 conditions; see the grade overview at Ti Grade 30.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault mill annealed sheet, plate, bar, pipe and tube | Standard stocked condition for all corrosion-service product forms; best ductility, formability and weldability. | 330 | 440 | 28 | 160 HB | — |
AS-WELDEDThis page GTAW joint / weld deposit, no post-weld heat treatment | Property basis for fabricated vessel and heat-exchanger joints made with matching Grade 30 filler under inert gas. | 350 | 450 | 20 | 175 HB | 3.1 % IACS |
Cold worked and stress relieved | Pick for tubing and bar where higher yield strength and tighter tolerance are needed and forming is minimal. | 540 | 620 | 15 | 210 HB | — |
What is Ti Grade 30 AS-WELDED?
Ti Grade 30 AS-WELDED is Ti Grade 30 in the AS-WELDED condition — property basis for fabricated vessel and heat-exchanger joints made with matching Grade 30 filler under inert gas. Ti Grade 30 AS-WELDED 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 20% and the elastic modulus is 105 GPa (15.2 Msi). Ti Grade 30 AS-WELDED has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,650°C (3,002 °F). Annealed is the default condition FabDigit quotes; AS-WELDED is available on request or by drawing note.
Advantages
- Conducts heat well — 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 80% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low fracture toughness — 58 MPa·√m (52.8 ksi·√in), worse than 87% of titanium grades
- Low strength — 350 MPa (50.8 ksi), worse than 79% of titanium grades
Ti Grade 30 AS-WELDED properties
Typical room-temperature values for Ti Grade 30 AS-WELDED; 22 are specific to this condition. Other listed values are Ti Grade 30 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti Grade 30 AS-WELDED has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,650°C (3,002 °F).
Mechanical15
Ti Grade 30 AS-WELDED 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 20% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 30 AS-WELDED is rated for continuous service to 300°C (572 °F). It conducts heat at 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 80% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Ti Grade 30 AS-WELDED conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (94/100), better than 80% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 30 AS-WELDED takes about 700 MJ of energy and emits 44 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 20%.
Manufacturability8
Ti Grade 30 AS-WELDED's machinability is poor (30/100, better than 64% of titanium grades); weldability excellent (85/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti Grade 30 AS-WELDED
Is Ti Grade 30 easy to machine?
Machine like CP Ti: low surface speed (25–45 m/min HSS, 60–90 m/min carbide), heavy positive rake, sharp tools, rigid setup and flood coolant to avoid galling, work hardening and chip fires.
Can Ti Grade 30 be welded?
Excellent GTAW/PAW/EBW weldability with matching Grade 30 or Grade 7/11 filler, provided full argon/helium shielding of pool, HAZ and backside keeps weld-metal colour bright silver.
Can Ti Grade 30 be formed, bent or molded?
Cold form with generous bend radii (≈2.5–3t) and springback allowance; warm forming at 200–350 °C eases deep draws and heavy plate rolling.
What surface finishes work on Ti Grade 30?
Pickle in HNO₃/HF after hot work to remove alpha case and scale; passive oxide gives the corrosion protection, with anodizing or thermal oxidation used only for wear or colour coding.
Ti Grade 30 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 |
|---|---|---|
| Pdcathodic-depolarising noble addition | 0.04 – 0.08 | 0.05 |
| Coworks with Pd to raise crevice/reducing-acid resistance | 0.2 – 0.8 | 0.3 |
| Fe | ≤ 0.3 | — |
| OGrade 2 strength level; Grade 31 is the higher-oxygen counterpart | ≤ 0.25 | 0.15 |
| C | ≤ 0.08 | — |
| N | ≤ 0.03 | — |
| H0.0125 % max for some product forms | ≤ 0.02 | — |
| Residuals, eachtotal residuals 0.40 % max | ≤ 0.1 | — |
| Ti | balance | — |
Ti Grade 30 AS-WELDED — frequently asked
What is Ti Grade 30 AS-WELDED used for?
Ti Grade 30 AS-WELDED is typically used for chemical process piping, flue-gas desulfurization systems and seawater equipment. In short: ruthenium-enhanced Grade 12; crevice-corrosion upgrade; weldable Pd-free alternative.
What is the yield strength of Ti Grade 30 AS-WELDED?
Ti Grade 30 AS-WELDED 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 3 listed tempers.
Is Ti Grade 30 AS-WELDED easy to machine?
Not especially — machinability is rated poor (30/100, better than 64% of titanium grades). Machine like CP Ti: low surface speed (25–45 m/min HSS, 60–90 m/min carbide), heavy positive rake, sharp tools, rigid setup and flood coolant to avoid galling, work hardening and chip fires.
Can Ti Grade 30 AS-WELDED be welded?
Yes — weldability is rated excellent (85/100). Excellent GTAW/PAW/EBW weldability with matching Grade 30 or Grade 7/11 filler, provided full argon/helium shielding of pool, HAZ and backside keeps weld-metal colour bright silver.
What surface finishes work on Ti Grade 30 AS-WELDED?
Pickle in HNO₃/HF after hot work to remove alpha case and scale; passive oxide gives the corrosion protection, with anodizing or thermal oxidation used only for wear or colour coding.
Can Ti Grade 30 AS-WELDED be formed, bent or molded?
Cold form with generous bend radii (≈2.5–3t) and springback allowance; warm forming at 200–350 °C eases deep draws and heavy plate rolling.
What is the maximum service temperature of Ti Grade 30 AS-WELDED?
Ti Grade 30 AS-WELDED 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 30 Annealed and Ti Grade 30 CW-SR?
Annealed is the default condition — standard stocked condition for all corrosion-service product forms; best ductility, formability and weldability. CW-SR: pick for tubing and bar where higher yield strength and tighter tolerance are needed and forming is minimal. Yield strength is 330 MPa in Annealed versus 540 MPa in CW-SR.
Sources
- ASTM B265 — Titanium and Titanium Alloy Strip, Sheet, and Plate (Grade 30, UNS R53400) — ASTM International (2020)
- ASTM B348 / B381 — Titanium Bar, Billet and Forgings — ASTM International (2021)
- ASTM B337/B338 — Seamless and Welded Titanium Tube for Condensers and Heat Exchangers — ASTM International (2019)
- ASM Handbook Vol.2 — Properties of Nonferrous Alloys, Titanium section — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion of Titanium and Titanium Alloys — ASM International (2005)
- Corrosion-resistant titanium grades technical guide (Pd/Ru/Co-modified grades) — Titanium mill producer literature (2021)
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.