Stainless Steel 1.4886
EN 1.4886 · UNS N08330 · also RA330
1.4886 (X10NiCrSi35-19, N08330, RA330) is a high-silicon nickel-chromium austenitic heat-resistant grade whose Si-bearing oxide resists oxidation and carburization in furnace atmospheres.
Reference datasheet — 1.4886 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 Annealed condition
1.4886 tempers and conditions
1.4886 is supplied in 4 conditions, soft to hard. Annealed 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 |
|---|---|---|---|---|---|---|
Hot Finished | Large-diameter bar for machined furnace hardware, rolls and shafts where dimensional tolerance is uncritical. | 250 | 570 | 42 | 160 HB | 1.7 % IACS |
AnnealedDefault solution annealed (~1120–1180 °C, rapid cool) | Standard stocked condition for plate, sheet, bar, pipe and fittings destined for furnace service. | 260 | 585 | 43 | 160 HB | — |
Welded tube/pipe, annealed (ASTM B546/B775) | Radiant tubes and thermowells; post-weld solution anneal restores ductility and carbide-free austenite. | 265 | 585 | 40 | 163 HB | 1.7 % IACS |
Cold drawn | Choose for straight, close-tolerance bar and for fasteners/pins needing higher room-temperature strength; strength is lost above ~600 °C by recrystallization. | 450 | 690 | 30 | 200 HB | 1.7 % IACS |
Supply forms, finishes and certifications
Ways 1.4886 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CRA | Cold Rolled, Annealed | Surface finish |
HRAP | Hot Rolled, Annealed and Pickled | Surface finish |
What is 1.4886?
1.4886 (X10NiCrSi35-19, N08330, RA330) is a high-silicon nickel-chromium austenitic heat-resistant grade whose Si-bearing oxide resists oxidation and carburization in furnace atmospheres. It is used for furnace internals operating up to 1150 °C and is supplied annealed, as HRAP and cold-rolled sheet, cold-drawn bar, hot-finished sections and weld-annealed fabrications, with 260 MPa yield, 585 MPa tensile and 43 % elongation. Room-temperature strength is low, the alloy is gummy and strongly work-hardening, and it is not intended for wet corrosion service. 1.4864 shares the same UNS number at lower chromium and a 1050 °C rating. 1.4886 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,371°C (2,500 °F). 1.4886 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 43% and the elastic modulus is 196 GPa (28.4 Msi).
What is 1.4886 used for?
- heat-treat fixtures
- radiant tubes
- furnace conveyor components
- kiln hardware
Advantages
- High service temperature — 1,150°C (2,102 °F), better than 99% of stainless steel grades
Limitations
- High embodied carbon — 7.5 kg CO₂/kg, worse than 97% of stainless steel grades
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- Poor heat conductor — 12.6 W/m·K (7.28 BTU/hr·ft·°F), worse than 88% of stainless steel grades
- Low strength — 260 MPa (37.7 ksi), worse than 84% of stainless steel grades
- Hard to polish — 60/100, worse than 80% of stainless steel grades
1.4886 properties
Typical room-temperature values for 1.4886-Annealed; bars are the position among stainless steel grades.
Physical3
1.4886 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,371°C (2,500 °F).
Mechanical13
1.4886 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 43% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal5
1.4886 is rated for continuous service to 1,150°C (2,102 °F). It conducts heat at 12.6 W/m·K (7.28 BTU/hr·ft·°F), worse than 88% of stainless steel grades. Thermal expansion is 14.9 µm/m·K (8.28 µin/in·°F).
Electrical3
1.4886 conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 71% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4886 takes about 110 MJ of energy and emits 7.5 kg of CO₂ — more than 99% of stainless steel grades. Typical recycled content is 35%.
Manufacturability6
1.4886's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (75/100); formability good (65/100).
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. 1.4886 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4886
Is 1.4886 easy to machine?
Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy positive feed (never dwell), 20–35 m/min turning speeds and flood sulphurized coolant.
Can 1.4886 be welded?
Readily GTAW/GMAW/SMAW welded with matching RA330-04 or ERNiCr-3/ENiCrFe-3 filler; keep interpass low, no preheat, avoid high-Si autogenous welds which can hot-crack.
Can 1.4886 be formed, bent or molded?
Good cold formability but higher force than 304 and rapid work hardening; hot work at 1150–1230 °C and finish above 980 °C, then solution anneal 1120–1180 °C with rapid cooling.
1.4886 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 |
|---|---|---|
| Niaustenite stabilizer, carburization resistance | 34 – 37 | 35 |
| Cr | 17 – 20 | 19 |
| Sikey for oxidation/carburization resistance | 0.75 – 1.5 | 1.2 |
| C | ≤ 0.08 | 0.05 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.03 | |
| S | ≤ 0.03 | |
| Cusome specs | ≤ 1 | |
| Febalance, ≈43 % | balance |
What surface finishes work on 1.4886?
Pickle in HNO3-HF or grit blast to remove high-temperature scale; can be ground and polished to a bright finish, no anodizing (n/a) — passivate after machining for wet service.
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 1.4886 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- N08330
- EN / DIN / Werkstoff-Nr.
- X10NiCrSi35-19
- Trade names
- RA330
- Other
- 330
How much does 1.4886 cost?
1.4886 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.
1.4886 — frequently asked
What is 1.4886 used for?
1.4886 is typically used for heat-treat fixtures, radiant tubes, furnace conveyor components and kiln hardware. In short: furnace alloy to 1150 °C; carburization-resistant 330 grade; high-silicon oxidation barrier.
What is the yield strength of 1.4886?
1.4886 has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 84% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4886 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy positive feed (never dwell), 20–35 m/min turning speeds and flood sulphurized coolant.
Can 1.4886 be welded?
Yes — weldability is rated very good (75/100). Readily GTAW/GMAW/SMAW welded with matching RA330-04 or ERNiCr-3/ENiCrFe-3 filler; keep interpass low, no preheat, avoid high-Si autogenous welds which can hot-crack.
What surface finishes work on 1.4886?
Pickle in HNO3-HF or grit blast to remove high-temperature scale; can be ground and polished to a bright finish, no anodizing (n/a) — passivate after machining for wet service.
Can 1.4886 be formed, bent or molded?
Good cold formability but higher force than 304 and rapid work hardening; hot work at 1150–1230 °C and finish above 980 °C, then solution anneal 1120–1180 °C with rapid cooling.
What is the maximum service temperature of 1.4886?
1.4886 is rated for continuous use to about 1,150°C (2,102 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4886 Annealed and 1.4886-CD?
Annealed is the default condition — standard stocked condition for plate, sheet, bar, pipe and fittings destined for furnace service. CD: choose for straight, close-tolerance bar and for fasteners/pins needing higher room-temperature strength; strength is lost above ~600 °C by recrystallization. Yield strength is 260 MPa in Annealed versus 450 MPa in CD.
How much does 1.4886 cost?
1.4886 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
- ASTM B536 — Ni-Fe-Cr-Si Alloy Plate, Sheet and Strip (N08330/N08332) — ASTM International (2019)
- ASTM B511/B512 — N08330 Bar and Billet — ASTM International (2019)
- EN 10095 — Heat resisting steels and nickel alloys — CEN (2018)
- RA330 Alloy Data Sheet — Rolled Alloys (2022)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- GB/T 15007 / GB/T 15008 — SAC (2017)
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.