Stainless Steel E349
EN E349 · UNS W34910
E349 (W34910, E349-16 per GB/T 983) is a Cr-Ni-Mo-V austenitic-type covered electrode for welding high-temperature, high-strength iron-base alloys such as 19-9DL, with deposit creep and elevated-temperature strength matched to the base metal.
Reference datasheet — E349 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 E349-16 condition
E349 tempers and conditions
E349 is supplied in 4 conditions, soft to hard. E349-16 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Lime (basic) covered electrode, as-welded, DCEP only | Choose for the lowest hydrogen/oxygen deposit and best as-welded toughness on thick or highly restrained high-temperature joints; requires DC reverse polarity and rebaking. | 540 | 745 | 33 | 195 HB | 2.2 % IACS |
Silica-rutile covered electrode, as-welded, AC or DCEP | Pick when the flattest bead profile and easiest self-lifting slag are wanted on fillet and horizontal work; slightly more fluid pool than -16. | 545 | 755 | 31 | 200 HB | 2.2 % IACS |
E349-16Default Rutile (titania) covered electrode, as-welded, AC or DCEP | Most commonly stocked form: smooth arc and easy slag removal, all-position, AC-capable — pick for general repair and fabrication of 19-9DL type parts. | 550 | 760 | 30 | 200 HB | 2.2 % IACS |
Post-weld heat treated | Use when the weldment is stress-relieved or ages in service: Nb/Ti/W carbide precipitation raises strength and hardness while cutting room-temperature ductility and impact energy. | 600 | 800 | 20 | 19 HRC | 2.3 % IACS |
What is E349?
E349 (W34910, E349-16 per GB/T 983) is a Cr-Ni-Mo-V austenitic-type covered electrode for welding high-temperature, high-strength iron-base alloys such as 19-9DL, with deposit creep and elevated-temperature strength matched to the base metal. The all-weld deposit provides 550 MPa yield, 760 MPa tensile, 30 % elongation and about 200 HB (93 HRB), and is rated for service to 815 °C. Availability is limited to SMAW electrodes in -15, -16 and -17 coatings, and PWHT data is on file; where matching creep strength is not required, standard 347 or 316L consumables are cheaper and easier to source. E349 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,385°C (2,525 °F). E349 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 196 GPa (28.4 Msi).
What is E349 used for?
- Jet engine exhaust components
- High-temperature bolting and brackets
- Elevated-temperature pressure parts
- Repair of 19-9DL alloy
Advantages
- High strength — 550 MPa (79.8 ksi), better than 83% of stainless steel grades
- Readily welded — 80/100, better than 80% of stainless steel grades
- High service temperature — 815°C (1,499 °F), better than 77% of stainless steel grades
Limitations
- Hard to polish — 55/100, worse than 89% of stainless steel grades
- High embodied carbon — 5.5 kg CO₂/kg, worse than 77% of stainless steel grades
E349 properties
Typical room-temperature values for E349-E349-16; bars are the position among stainless steel grades.
Physical3
E349 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Mechanical16
E349 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal6
E349 is rated for continuous service to 815°C (1,499 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 16.5 µm/m·K (9.17 µin/in·°F).
Electrical3
E349 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental2
Corrosion resistance is good (55/100), worse than 71% of stainless steel grades.
Sustainability4
Producing a kilogram of E349 takes about 60 MJ of energy and emits 5.5 kg of CO₂ — more than 70% of stainless steel grades. Typical recycled content is 35%.
Manufacturability7
E349's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability very good (80/100); formability fair (35/100).
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 stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. E349 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E349
Is E349 easy to machine?
Weld deposit machines like a work-hardening austenitic stainless: rigid setup, sharp carbide tools, positive rake, heavy feed and low speed, flood coolant.
Can E349 be welded?
SMAW only; redry electrodes ~250–300 °C, keep interpass below ~150 °C, use stringer beads and DCEP (or AC for -16/-17) to preserve 2–8 FN ferrite and avoid hot cracking.
Can E349 be formed, bent or molded?
Not a wrought product — deposit shape is set by welding technique; grind or machine to final contour rather than cold form.
E349 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 |
|---|---|---|
| CAWS A5.4 undiluted weld metal | ≤ 0.13 | 0.1 |
| Cr | 18 – 21 | 19.5 |
| Ni | 8 – 10 | 9 |
| Mo | 0.35 – 0.65 | 0.5 |
| W | 1.25 – 1.75 | 1.5 |
| NbNb+Ta | 0.75 – 1.2 | 1 |
| Ti | 0.1 – 0.35 | 0.2 |
| Mn | 0.5 – 2.5 | 1.5 |
| Si | ≤ 0.9 | 0.6 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Cu | ≤ 0.75 | 0.1 |
| Fe | balance |
What surface finishes work on E349?
Remove all slag between passes; pickle/passivate or abrasive-blast with stainless media before service to restore the chromium oxide film — no anodizing.
Surface treatments FabDigit runs on stainless steel 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).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel E349 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W34910
- Also called
- AWS A5.4 E349-XX
How much does E349 cost?
E349 is a high-cost stainless steel ($$$$), 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.
E349 — frequently asked
What is E349 used for?
E349 is typically used for jet engine exhaust components, high-temperature bolting and brackets, elevated-temperature pressure parts and repair of 19-9DL alloy. In short: creep-matching 19-9DL filler; 815 °C service deposit; SMAW electrodes only.
What is the yield strength of E349?
E349 has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is E349 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Weld deposit machines like a work-hardening austenitic stainless: rigid setup, sharp carbide tools, positive rake, heavy feed and low speed, flood coolant.
Can E349 be welded?
Yes — weldability is rated very good (80/100). SMAW only; redry electrodes ~250–300 °C, keep interpass below ~150 °C, use stringer beads and DCEP (or AC for -16/-17) to preserve 2–8 FN ferrite and avoid hot cracking.
What surface finishes work on E349?
Remove all slag between passes; pickle/passivate or abrasive-blast with stainless media before service to restore the chromium oxide film — no anodizing.
Can E349 be formed, bent or molded?
Not a wrought product — deposit shape is set by welding technique; grind or machine to final contour rather than cold form.
What is the maximum service temperature of E349?
E349 is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E349-16 and E349 PWHT?
E349-16 is the default condition — most commonly stocked form: smooth arc and easy slag removal, all-position, AC-capable — pick for general repair and fabrication of 19-9DL type parts. PWHT: use when the weldment is stress-relieved or ages in service: Nb/Ti/W carbide precipitation raises strength and hardness while cutting room-temperature ductility and impact energy. Yield strength is 550 MPa in E349-16 versus 600 MPa in PWHT.
How much does E349 cost?
E349 is a high-cost stainless steel ($$$$), 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 A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys (19-9DL) — ASM International (1990)
- Specialty stainless/heat-resisting SMAW electrode datasheets (E349 class) — Metrode / Böhler Welding (2022)
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.