Stainless Steel 1.4864
EN 1.4864
1.4864 (X12NiCrSi35-16, N08330) is a high-nickel austenitic heat-resistant grade with elevated silicon that builds a protective Cr-Si oxide for scaling resistance under cyclic high-temperature service.
Reference datasheet — 1.4864 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 ANN condition
1.4864 tempers and conditions
1.4864 is supplied in 4 conditions, soft to hard. ANN 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 rolled | Heavy plate and hot-finished bar for welded furnace retorts and grates where surface finish is unimportant. | 245 | 570 | 42 | 155 HB | 1.7 % IACS |
ANNDefault Annealed | Standard stocked condition for plate, sheet, bar and tube used in furnace hardware; maximum ductility and freedom from residual carbide networks. | 255 | 585 | 43 | 150 HB | 1.7 % IACS |
Cold drawn | Choose for close-tolerance bar, bolting and fixture pins where higher room-temperature strength and better surface finish are needed. | 450 | 700 | 28 | 14 HRC | 1.7 % IACS |
Cold Worked, 1/4 Hard | Light temper strip and wire for springy furnace clips and mesh; strength reverts to annealed values after the first high-temperature exposure. | 520 | 760 | 20 | 20 HRC | 1.7 % IACS |
Supply forms, finishes and certifications
Ways 1.4864 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
BA-TUBE | Bright Annealed tube | Supply form |
What is 1.4864?
1.4864 (X12NiCrSi35-16, N08330) is a high-nickel austenitic heat-resistant grade with elevated silicon that builds a protective Cr-Si oxide for scaling resistance under cyclic high-temperature service. It is chosen for furnace hardware in oxidizing atmospheres up to 1050 °C and is supplied as annealed sheet, hot-rolled plate, cold-drawn bar, quarter-hard cold-worked strip and bright-annealed tube. Room-temperature strength is modest (255 MPa yield, 585 MPa tensile, 43 % elongation) and the high-Si austenite work-hardens quickly, so machining is slow; sulphur-bearing atmospheres and contaminants must be avoided. For higher-temperature furnace internals, 1.4886 (RA330) is the nearest step up. 1.4864 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,360°C (2,480 °F). 1.4864 has a yield strength of 255 MPa (37 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 87% of stainless steel grades. Elongation at break is 43% and the elastic modulus is 196 GPa (28.4 Msi).
What is 1.4864 used for?
- furnace parts
- heat-treatment fixtures
- carburizing baskets
- annealing boxes
Advantages
- High service temperature — 1,050°C (1,922 °F), better than 91% of stainless steel grades
Limitations
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- High embodied carbon — 6.5 kg CO₂/kg, 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 — 255 MPa (37 ksi), worse than 87% of stainless steel grades
1.4864 properties
Typical room-temperature values for 1.4864-ANN; bars are the position among stainless steel grades.
Physical3
1.4864 has a density of 7.94 g/cm³ (0.287 lb/in³), heavier than 78% of stainless steel grades. It melts at 1,360°C (2,480 °F).
Mechanical16
1.4864 has a yield strength of 255 MPa (37 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 87% of stainless steel grades. Elongation at break is 43% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal6
1.4864 is rated for continuous service to 1,050°C (1,922 °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
1.4864 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 1.4864 takes about 85 MJ of energy and emits 6.5 kg of CO₂ — more than 92% of stainless steel grades. Typical recycled content is 50%.
Manufacturability7
1.4864's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability very good (70/100); formability good (60/100).
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. 1.4864 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4864
Is 1.4864 easy to machine?
Rigid setups, positive-rake carbide, heavy constant feed and flood coolant; the high-Si austenite work-hardens fast so avoid dwelling and rubbing.
Can 1.4864 be welded?
GTAW/GMAW/SMAW with matching 330 filler or ERNiCr-3/ENiCrFe-3; no preheat needed, keep interpass below ~150 °C and heat input low to limit hot-cracking from the high Si.
Can 1.4864 be formed, bent or molded?
Cold forms like a stiff 310S — allow extra springback and interstage anneals at 1050–1100 °C; hot work between 1150 and 950 °C then rapid cool.
1.4864 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 |
|---|---|---|
| CEN 10095; N08330 allows 0.08 max in some tube specs | 0.05 – 0.15 | 0.1 |
| Sikey for scale adherence | 1 – 2 | 1.5 |
| Mn | ≤ 2 | 1 |
| P | ≤ 0.05 | |
| S | ≤ 0.02 | |
| CrN08330 runs 17–20 Cr | 15 – 17 | 16 |
| Ni | 33 – 37 | 35 |
| Fe | balance |
What surface finishes work on 1.4864?
Pickle and passivate after hot work or welding; for service, a first firing in clean air builds the protective Cr-Si oxide — avoid sulphur-bearing marking paints and lubricants.
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 1.4864 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X12NiCrSi35-16
- Similar grades
- N08330
How much does 1.4864 cost?
1.4864 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.
1.4864 — frequently asked
What is 1.4864 used for?
1.4864 is typically used for furnace parts, heat-treatment fixtures, carburizing baskets and annealing boxes. In short: scaling resistant to 1050 °C; high-silicon 330-type grade; built for thermal cycling.
What is the yield strength of 1.4864?
1.4864 has a typical yield strength of 255 MPa (37 ksi) and a tensile strength of 585 MPa (84.8 ksi) — weaker than 87% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4864 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Rigid setups, positive-rake carbide, heavy constant feed and flood coolant; the high-Si austenite work-hardens fast so avoid dwelling and rubbing.
Can 1.4864 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/SMAW with matching 330 filler or ERNiCr-3/ENiCrFe-3; no preheat needed, keep interpass below ~150 °C and heat input low to limit hot-cracking from the high Si.
What surface finishes work on 1.4864?
Pickle and passivate after hot work or welding; for service, a first firing in clean air builds the protective Cr-Si oxide — avoid sulphur-bearing marking paints and lubricants.
Can 1.4864 be formed, bent or molded?
Cold forms like a stiff 310S — allow extra springback and interstage anneals at 1050–1100 °C; hot work between 1150 and 950 °C then rapid cool.
What is the maximum service temperature of 1.4864?
1.4864 is rated for continuous use to about 1,050°C (1,922 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4864-ANN and 1.4864-CD?
ANN is the default condition — standard stocked condition for plate, sheet, bar and tube used in furnace hardware; maximum ductility and freedom from residual carbide networks. CD: choose for close-tolerance bar, bolting and fixture pins where higher room-temperature strength and better surface finish are needed. Yield strength is 255 MPa in ANN versus 450 MPa in CD.
How much does 1.4864 cost?
1.4864 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
- EN 10095 — Heat resisting steels and nickel alloys — CEN (2018)
- ASTM B536 / B511 — UNS N08330 plate, sheet, strip and bar — ASTM International (2019)
- Alloy 330 (UNS N08330) heat-resistant alloy datasheet — Rolled Alloys / Sandvik (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
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.