Titanium ERTi-12
GB ERTi12
ERTi-12 is Ti-0.3Mo-0.8Ni filler wire, UNS R53400, matching Grade 12 base metal and giving better crevice-corrosion resistance and higher strength than CP fillers without palladium.
Reference datasheet — ERTi-12 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 AW condition
ERTi-12 tempers and conditions
ERTi-12 is supplied in 2 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Pick when residual stress or hydrogen/stress-corrosion sensitivity matters in heavy-section or formed weldments. | 440 | 540 | 23 | 185 HB | 3.3 % IACS |
AWDefault As-welded deposit | Default condition: undiluted weld metal deposited under full argon shielding, no post-weld heat treatment. | 460 | 560 | 20 | 195 HB | — |
Supply forms, finishes and certifications
Ways ERTi-12 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
WIRE | Filler wire/rod as supplied | Supply form |
What is ERTi-12?
ERTi-12 is Ti-0.3Mo-0.8Ni filler wire, UNS R53400, matching Grade 12 base metal and giving better crevice-corrosion resistance and higher strength than CP fillers without palladium. It is supplied as spooled and cut wire, reported as-welded, stress-relieved and as wire, with typical deposit values of 460 MPa yield, 560 MPa tensile, 20% elongation, 195 HB (93 HRB) and a corrosion resistance score of 90. Service is limited to about 315 °C and resistance in strongly reducing acids is below that of ERTi-7, which remains the choice when crevice attack governs. ERTi-12 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). ERTi-12 has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Elongation at break is 20% and the elastic modulus is 103 GPa (14.9 Msi).
What is ERTi-12 used for?
- Welding Grade 12 heat exchangers
- Seawater and brine handling equipment
- Marine piping systems
- Cost-effective alternative to Pd-alloyed welds
Advantages
- Conducts heat well — 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades
- High electrical conductivity — 3.3 % IACS, better than 92% of titanium grades
ERTi-12 properties
Typical room-temperature values for ERTi-12-AW; bars are the position among titanium grades.
Physical3
ERTi-12 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
ERTi-12 has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Elongation at break is 20% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
ERTi-12 is rated for continuous service to 315°C (599 °F). It conducts heat at 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades. Thermal expansion is 9 µm/m·K (5 µin/in·°F).
Electrical3
ERTi-12 conducts electricity at 3.3 % IACS, better than 92% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (90/100), worse than 63% of titanium grades.
Sustainability4
Producing a kilogram of ERTi-12 takes about 650 MJ of energy and emits 40 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 20%.
Manufacturability7
ERTi-12's machinability is poor (25/100, better than 53% of titanium grades); weldability excellent (88/100); formability good (55/100).
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. ERTi-12 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ERTi-12
Is ERTi-12 easy to machine?
Rarely machined as a consumable; if the deposit is machined use low surface speed, rigid setup, sharp uncoated or AlTiN carbide and flood coolant to avoid galling and ignition of fines.
Can ERTi-12 be welded?
GTAW/GMAW/PAW with 99.995 % argon or Ar-He, trailing shield and full back-purge; keep interpass below ~150 °C, wipe wire with acetone and reject any weld showing straw/blue-plus discolouration.
Can ERTi-12 be formed, bent or molded?
Weldments form like Grade 12 sheet — bend at ≥3–4 t radius cold, or warm-form at 200–300 °C; springback is high and stress relief after forming is recommended.
ERTi-12 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 |
|---|---|---|
| Mo | 0.2 – 0.4 | 0.3 |
| Ni | 0.6 – 0.9 | 0.8 |
| Femax per AWS A5.16 filler limit | ≤ 0.2 | 0.08 |
| Oproducers commonly hold ≤0.15 % for weld ductility | ≤ 0.25 | 0.12 |
| C | ≤ 0.03 | 0.01 |
| N | ≤ 0.02 | 0.01 |
| H | ≤ 0.01 | 0 |
| Other, each | ≤ 0.1 | |
| Other, total | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on ERTi-12?
Pickle in HNO3-HF or bead-blast plus nitric passivation to restore the oxide; can be colour anodized (AMS 2488) — never grind with iron-contaminated media.
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 ERTi-12 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- GB (China)
- ERTi12
- Similar grades
- R53400
How much does ERTi-12 cost?
ERTi-12 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.
ERTi-12 — frequently asked
What is ERTi-12 used for?
ERTi-12 is typically used for welding Grade 12 heat exchangers, seawater and brine handling equipment, marine piping systems and cost-effective alternative to Pd-alloyed welds. In short: lower-cost corrosion filler; stronger than CP fillers; alternative to ERTi-7.
What is the yield strength of ERTi-12?
ERTi-12 has a typical yield strength of 460 MPa (66.7 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Strength varies by condition: see the 2 listed tempers.
Is ERTi-12 easy to machine?
Not especially — machinability is rated poor (25/100, better than 53% of titanium grades). Rarely machined as a consumable; if the deposit is machined use low surface speed, rigid setup, sharp uncoated or AlTiN carbide and flood coolant to avoid galling and ignition of fines.
Can ERTi-12 be welded?
Yes — weldability is rated excellent (88/100). GTAW/GMAW/PAW with 99.995 % argon or Ar-He, trailing shield and full back-purge; keep interpass below ~150 °C, wipe wire with acetone and reject any weld showing straw/blue-plus discolouration.
What surface finishes work on ERTi-12?
Pickle in HNO3-HF or bead-blast plus nitric passivation to restore the oxide; can be colour anodized (AMS 2488) — never grind with iron-contaminated media.
Can ERTi-12 be formed, bent or molded?
Weldments form like Grade 12 sheet — bend at ≥3–4 t radius cold, or warm-form at 200–300 °C; springback is high and stress relief after forming is recommended.
What is the maximum service temperature of ERTi-12?
ERTi-12 is rated for continuous use to about 315°C (599 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERTi-12-AW and ERTi-12-SR?
AW is the default condition — default condition: undiluted weld metal deposited under full argon shielding, no post-weld heat treatment. SR: pick when residual stress or hydrogen/stress-corrosion sensitivity matters in heavy-section or formed weldments. Yield strength is 460 MPa in AW versus 440 MPa in SR.
How much does ERTi-12 cost?
ERTi-12 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
- AWS A5.16/A5.16M — Specification for Titanium and Titanium-Alloy Welding Electrodes and Rods — AWS (2013)
- ASTM B265 / B348 — Titanium and Titanium Alloy Strip, Sheet, Plate and Bars (Grade 12, UNS R53400) — ASTM International (2020)
- AWS D1.9/D1.9M — Structural Welding Code, Titanium — AWS (2015)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (Titanium) — ASM International (2005)
- Titanium Grade 12 (Ti-0.3Mo-0.8Ni) alloy data sheet — TIMET / Baoji Titanium (2021)
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.