Stainless Steel E330-15
Grade
EN E330 · UNS W88331
E330-15 = lime (basic) coated electrode, DCEP only
Pick for out-of-position work and the cleanest, most crack-resistant deposit; DC electrode-positive only.
Values for the E330-15 condition
Other E330 tempers and conditions
E330 is listed in 6 conditions; see the grade overview at E330.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Use when carbides and residual stress from multi-pass welding must be dissolved before service; restores ductility but lowers strength slightly. | 320 | 560 | 40 | 160 HB | 1.7 % IACS |
AWDefault As-welded deposit | Default condition: properties of the undiluted as-deposited weld metal, no post-weld heat treatment. | 400 | 600 | 32 | 190 HB | 1.7 % IACS |
E330-15This page Lime (basic) coated electrode, DCEP only | Pick for out-of-position work and the cleanest, most crack-resistant deposit; DC electrode-positive only. | 400 | 595 | 33 | 185 HB | 1.7 % IACS |
Titania (rutile) coated electrode, AC or DCEP | Most commonly stocked coating type: smooth arc, easy slag release, AC-capable for general furnace fabrication. | 405 | 605 | 31 | 190 HB | 1.7 % IACS |
Silica-bearing rutile coating, AC or DCEP | Choose for the flattest bead profile and best appearance on flat/horizontal fillets; slightly more fluid slag than -16. | 410 | 610 | 30 | 195 HB | 1.7 % IACS |
High-carbon (0.35–0.45 % C) variant for maximum hot strength | Use where creep/hot strength above ~900 °C governs and room-temperature ductility can be sacrificed; avoid in carburizing service needing toughness. | 440 | 640 | 22 | 215 HB | 1.7 % IACS |
What is E330-15?
E330-15 is E330 in the E330-15 grade — pick for out-of-position work and the cleanest, most crack-resistant deposit; DC electrode-positive only. E330-15 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 595 MPa (86.3 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 33% and the elastic modulus is 196 GPa (28.4 Msi). E330-15 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,340°C (2,444 °F). AW is the default condition FabDigit quotes; E330-15 is available on request or by drawing note.
Advantages
- High service temperature — 1,100°C (2,012 °F), better than 96% of stainless steel grades
Limitations
- High embodied carbon — 7 kg CO₂/kg, worse than 96% of stainless steel grades
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- Poor heat conductor — 12.5 W/m·K (7.22 BTU/hr·ft·°F), worse than 90% of stainless steel grades
- Hard to polish — 55/100, worse than 89% of stainless steel grades
E330-15 properties
Typical room-temperature values for E330-15; 22 are specific to this condition. Other listed values are E330 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
E330-15 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,340°C (2,444 °F).
Mechanical15
E330-15 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 595 MPa (86.3 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 33% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal5
E330-15 is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 12.5 W/m·K (7.22 BTU/hr·ft·°F), worse than 90% of stainless steel grades. Thermal expansion is 14.4 µm/m·K (8 µin/in·°F).
Electrical3
E330-15 conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of E330-15 takes about 95 MJ of energy and emits 7 kg of CO₂ — more than 96% of stainless steel grades. Typical recycled content is 40%.
Manufacturability7
E330-15's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability good (58/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E330-15
Is E330 easy to machine?
Deposits machine like a high-nickel austenitic alloy — gummy and strongly work-hardening; use sharp positive-rake carbide, heavy feed, low speed and flood coolant, and expect grinding rather than turning for weld dressing.
Can E330 be welded?
Keep heat input and interpass temperature low (≤150 °C), use stringer beads and convex profiles, and dry basic electrodes at 250–300 °C — the ferrite-free deposit is hot-crack sensitive and dilution from carbon steel must be minimised.
Can E330 be formed, bent or molded?
Not a wrought product; weld beads can be peened or lightly cold worked, but heavy cold forming of the deposit risks cracking and a post-weld solution anneal is preferred.
What surface finishes work on E330?
Pickle and passivate or abrasive-blast/wire-brush with stainless-only tools to remove heat tint; not anodizable, and painting is unnecessary for hot-gas service.
E330 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 |
|---|---|---|
| CE330H variant: 0.35–0.45 % | 0.18 – 0.25 | 0.21 |
| Cr | 14 – 17 | 15.5 |
| Ni | 33 – 37 | 35 |
| Mn | 1 – 2.5 | 1.7 |
| SiER330 bare wire: 0.30–0.65 % | ≤ 0.9 | 0.6 |
| Moresidual only | ≤ 0.75 | — |
| Curesidual only | ≤ 0.75 | — |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Febalance, nominally ~46 % | balance | — |
E330-15 — frequently asked
What is E330-15 used for?
E330-15 is typically used for furnace muffles, heat-treating baskets and fixtures and kiln components. In short: 1100 °C oxidation resistance; alloy 330 matching filler; not for aqueous corrosion.
What is the yield strength of E330-15?
E330-15 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 595 MPa (86.3 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is E330-15 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Deposits machine like a high-nickel austenitic alloy — gummy and strongly work-hardening; use sharp positive-rake carbide, heavy feed, low speed and flood coolant, and expect grinding rather than turning for weld dressing.
Can E330-15 be welded?
Yes — weldability is rated good (58/100). Keep heat input and interpass temperature low (≤150 °C), use stringer beads and convex profiles, and dry basic electrodes at 250–300 °C — the ferrite-free deposit is hot-crack sensitive and dilution from carbon steel must be minimised.
What surface finishes work on E330-15?
Pickle and passivate or abrasive-blast/wire-brush with stainless-only tools to remove heat tint; not anodizable, and painting is unnecessary for hot-gas service.
Can E330-15 be formed, bent or molded?
Not a wrought product; weld beads can be peened or lightly cold worked, but heavy cold forming of the deposit risks cracking and a post-weld solution anneal is preferred.
What is the maximum service temperature of E330-15?
E330-15 is rated for continuous use to about 1,100°C (2,012 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E330-AW and E330-SR?
AW is the default condition — default condition: properties of the undiluted as-deposited weld metal, no post-weld heat treatment. SR: use when carbides and residual stress from multi-pass welding must be dissolved before service; restores ductility but lowers strength slightly. Yield strength is 400 MPa in AW versus 320 MPa in SR.
Sources
- AWS A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- AWS A5.9/A5.9M — Specification for Bare Stainless Steel Welding Electrodes and Rods — American Welding Society (2017)
- ASTM B511 / B536 — Alloy N08330 (Alloy 330) castings and plate/sheet/strip — ASTM International (2018)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 6 — Welding, Brazing, and Soldering — ASM International (1993)
- Alloy 330 (UNS N08330) heat-resistant alloy technical data — Rolled Alloys / Sandvik (2021)
- Stainless and heat-resistant covered electrode / filler metal catalogue (E330, ER330) — Böhler Welding / Lincoln Electric (2022)
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.