Stainless Steel 1.4886 Annealed
Temper · default condition
EN 1.4886 · UNS N08330 · also RA330
Standard stocked condition for plate, sheet, bar, pipe and fittings destined for furnace service.
Values for the Annealed condition
Other 1.4886 tempers and conditions
1.4886 is listed in 4 conditions; see the grade overview at 1.4886.
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 |
AnnealedDefaultThis page 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 |
What is 1.4886 Annealed?
1.4886 Annealed is 1.4886 in the Annealed temper — standard stocked condition for plate, sheet, bar, pipe and fittings destined for furnace service. 1.4886 Annealed 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). 1.4886 Annealed 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).
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 Annealed properties
Typical room-temperature values for 1.4886 Annealed; 10 are specific to this condition. Other listed values are 1.4886 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4886 Annealed 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 Annealed 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 Annealed 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 Annealed 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 Annealed 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 Annealed'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. Confirm any required mill or lot documentation when quoting.
Working with 1.4886 Annealed
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.
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.
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 | — |
1.4886 Annealed — frequently asked
What is 1.4886 Annealed used for?
1.4886 Annealed 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 Annealed?
1.4886 Annealed 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 Annealed 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 Annealed 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 Annealed?
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 Annealed 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 Annealed?
1.4886 Annealed 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.