Titanium Grade 13-AW (As-welded deposit)
Heat-treated state
ASTM Grade 13 · UNS R53413
Reference condition for weld-joint design; Ru/Ni distribution is retained so weld corrosion resistance matches base metal when properly shielded.
Values for the AW condition
Other Grade 13 tempers and conditions
Grade 13 is listed in 3 conditions; see the grade overview at Grade 13.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault mill annealed sheet, plate, strip, bar and tube | Standard supply condition for all corrosion-service product forms; maximum ductility and formability. | 240 | 345 | 28 | 130 HB | — |
AWThis page As-welded deposit | Reference condition for weld-joint design; Ru/Ni distribution is retained so weld corrosion resistance matches base metal when properly shielded. | 250 | 350 | 18 | 150 HB | 3.1 % IACS |
Cold worked and stress relieved | Pick for cold-drawn tubing or wire where higher strength and tighter dimensional control are needed without losing corrosion performance. | 390 | 480 | 18 | 9 HRC | 3 % IACS |
What is Grade 13-AW?
Grade 13-AW is Grade 13 heat treated to AW — reference condition for weld-joint design; Ru/Ni distribution is retained so weld corrosion resistance matches base metal when properly shielded. Grade 13-AW has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 88% of titanium grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi). Grade 13-AW 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; AW is available on request or by drawing note.
Advantages
- Conducts heat well — 17.5 W/m·K (10.1 BTU/hr·ft·°F), better than 90% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 250 MPa (36.3 ksi), worse than 88% of titanium grades
Grade 13-AW properties
Typical room-temperature values for Grade 13-AW; 22 are specific to this condition. Other listed values are Grade 13 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Grade 13-AW 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).
Mechanical16
Grade 13-AW has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 88% of titanium grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Grade 13-AW is rated for continuous service to 300°C (572 °F). It conducts heat at 17.5 W/m·K (10.1 BTU/hr·ft·°F), better than 90% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade 13-AW conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (91/100), worse than 58% of titanium grades.
Sustainability4
Producing a kilogram of Grade 13-AW takes about 660 MJ of energy and emits 45 kg of CO₂ — less than 57% of titanium grades. Typical recycled content is 25%.
Manufacturability7
Grade 13-AW's machinability is poor (34/100, better than 74% 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 Grade 13-AW
Is Grade 13 easy to machine?
Machine like CP titanium: low surface speed (20–35 m/min HSS, 45–75 m/min carbide), heavy positive rake, rigid setup, flood coolant, never dwell — galling and work-hardening are the main issues.
Can Grade 13 be welded?
Readily GTAW/PAW/EBW welded with matching or CP filler; requires full inert-gas shielding with trailing shield and backing purge, keep interpass low and joint spotless to avoid embrittlement.
Can Grade 13 be formed, bent or molded?
Good cold formability at low strain rates (bend radius ≈ 2–3 t); hot form 600–750 °C, allow generous springback and avoid chlorinated or lead-bearing lubricants.
What surface finishes work on Grade 13?
Pickle in HNO₃/HF then passivate; anodize (AMS 2488 type) for colour or anti-galling; no plating needed for corrosion service — descale carefully to avoid hydrogen pickup.
Grade 13 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 |
|---|---|---|
| Niα-stabilizer-free addition improving reducing-acid resistance | 0.4 – 0.6 | 0.5 |
| Rucathodic modifier, low-cost substitute for Pd | 0.02 – 0.04 | 0.03 |
| Fe | ≤ 0.2 | — |
| Olow-oxygen level gives Gr.13 its low strength/high ductility | ≤ 0.1 | — |
| C | ≤ 0.08 | — |
| N | ≤ 0.03 | — |
| H0.0125 % max for some tube/bar forms | ≤ 0.02 | — |
| Residuals, eachtotal 0.4 % max | ≤ 0.1 | — |
| Ti | balance | — |
Grade 13-AW — frequently asked
What is Grade 13-AW used for?
Grade 13-AW is typically used for chemical process piping, marine components and desalination equipment. In short: lower-cost Grade 7 substitute; crevice-resistant CP derivative; highly weldable corrosion grade.
What is the yield strength of Grade 13-AW?
Grade 13-AW has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 88% of titanium grades. Strength varies by condition: see the 3 listed tempers.
Is Grade 13-AW easy to machine?
Not especially — machinability is rated poor (34/100, better than 74% of titanium grades). Machine like CP titanium: low surface speed (20–35 m/min HSS, 45–75 m/min carbide), heavy positive rake, rigid setup, flood coolant, never dwell — galling and work-hardening are the main issues.
Can Grade 13-AW be welded?
Yes — weldability is rated excellent (85/100). Readily GTAW/PAW/EBW welded with matching or CP filler; requires full inert-gas shielding with trailing shield and backing purge, keep interpass low and joint spotless to avoid embrittlement.
What surface finishes work on Grade 13-AW?
Pickle in HNO₃/HF then passivate; anodize (AMS 2488 type) for colour or anti-galling; no plating needed for corrosion service — descale carefully to avoid hydrogen pickup.
Can Grade 13-AW be formed, bent or molded?
Good cold formability at low strain rates (bend radius ≈ 2–3 t); hot form 600–750 °C, allow generous springback and avoid chlorinated or lead-bearing lubricants.
What is the maximum service temperature of Grade 13-AW?
Grade 13-AW 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 Grade 13 Annealed and Grade 13 CWSR?
Annealed is the default condition — standard supply condition for all corrosion-service product forms; maximum ductility and formability. CWSR: pick for cold-drawn tubing or wire where higher strength and tighter dimensional control are needed without losing corrosion performance. Yield strength is 240 MPa in Annealed versus 390 MPa in CWSR.
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 / B861 — Titanium Tube and Pipe — ASTM International (2021)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (Titanium) — ASM International (2005)
- Corrosion-Resistant Titanium Grades (Ru/Pd-enhanced) technical bulletin — TIMET / ATI (2018)
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.