Stainless Steel 1.4980
EN 1.4980 · UNS S66286 · also A-286
1.4980 is the European standard designation for A-286 (X6NiCrTiMoVB25-15-2, S66286), an austenitic Fe-Ni-Cr precipitation-hardening stainless of superalloy class that combines high strength with good creep resistance up to about 700 °C.
Reference datasheet — 1.4980 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 STA condition
1.4980 tempers and conditions
1.4980 is supplied in 5 conditions, soft to hard. STA is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Softest supply condition for forming, deep drawing, machining of complex parts and welding before final aging. | 310 | 690 | 45 | 170 HB | — |
Cold drawn | Cold-drawn bar or wire supplied for cold-heading and secondary forming, or as feedstock to be aged after fabrication. | 690 | 900 | 20 | 25 HRC | 1.9 % IACS |
STADefault Solution treated and aged | Standard commercial condition for bar, forgings and fasteners: ~1000 MPa UTS with good ductility and creep strength to 700 °C. | 700 | 1,000 | 25 | 31 HRC | — |
Solution treated 900 °C + aged 720 °C/16 h | Finer-grain, higher-yield cycle for high-temperature bolting and turbine fasteners where notch strength matters more than creep-rupture ductility. | 760 | 1,035 | 20 | 34 HRC | — |
Cold worked then aged | Choose for 1200 MPa-class bolts, springs and studs where the extra strength from cold work plus γ′ aging is needed at moderate temperature. | 1,000 | 1,240 | 12 | 38 HRC | — |
What is 1.4980?
1.4980 is the European standard designation for A-286 (X6NiCrTiMoVB25-15-2, S66286), an austenitic Fe-Ni-Cr precipitation-hardening stainless of superalloy class that combines high strength with good creep resistance up to about 700 °C. In the default condition it provides 700 MPa yield, 1000 MPa tensile, 25 % elongation and 31 HRC (300 HB), with ST, STA, STA-900, CD and CW+A conditions on file as bar, wire, sheet and forgings. Machinability is the main constraint (20/100), formability is limited (30/100) and welded joints require re-solution treatment and aging. Above 700 °C, nickel-base alloys such as 718 are the usual step up; 1.4606 covers the same alloy under its other EN number. 1.4980 has a density of 7.92 g/cm³ (0.286 lb/in³), heavier than 77% of stainless steel grades. It melts at 1,370°C (2,498 °F). 1.4980 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 92% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 201 GPa (29.2 Msi).
What is 1.4980 used for?
- jet engine fasteners and rings
- turbocharger hardware
- high-temperature bolting
- aerospace structural parts
Advantages
- High strength — 700 MPa (102 ksi), better than 92% of stainless steel grades
Limitations
- Difficult to machine — 20/100, worse than 98% 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
- High embodied carbon — 5.8 kg CO₂/kg, worse than 86% of stainless steel grades
- Low electrical conductivity — 1.9 % IACS, worse than 84% of stainless steel grades
- Difficult to weld — 45/100, worse than 79% of stainless steel grades
1.4980 properties
Typical room-temperature values for 1.4980-STA; bars are the position among stainless steel grades.
Physical3
1.4980 has a density of 7.92 g/cm³ (0.286 lb/in³), heavier than 77% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical16
1.4980 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 92% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 201 GPa (29.2 Msi).
Thermal6
1.4980 is rated for continuous service to 700°C (1,292 °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 16.4 µm/m·K (9.11 µin/in·°F).
Electrical3
1.4980 conducts electricity at 1.9 % IACS, worse than 84% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 58% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4980 takes about 80 MJ of energy and emits 5.8 kg of CO₂ — more than 89% of stainless steel grades. Typical recycled content is 35%.
Manufacturability7
1.4980's machinability is poor (20/100, worse than 98% of stainless steel grades); weldability fair (45/100); formability poor (30/100).
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. 1.4980 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4980
Is 1.4980 easy to machine?
Machine in the solution-treated state when possible; rigid setups, positive-rake carbide or ceramic tooling, low speed (15–25 m/min in STA), heavy feed and flood coolant to avoid work-hardened glaze and rapid notch wear.
Can 1.4980 be welded?
GTAW/EBW with matching or Inconel 82/718 filler in the solution condition, low heat input and no preheat; re-solution treat and age after welding to avoid strain-age (post-weld heat treatment) cracking in restrained joints.
Can 1.4980 be formed, bent or molded?
Cold form or cold head in the solution-treated condition (high work-hardening rate — allow extra power and intermediate anneals); hot work 1100–1150 °C, finish above 950 °C, then solution treat and age.
1.4980 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 |
|---|---|---|
| C | 0.03 – 0.08 | 0.05 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 2 | 1.3 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Cr | 13.5 – 16 | 14.8 |
| Ni | 24 – 27 | 25.5 |
| Mo | 1 – 1.5 | 1.25 |
| Tiγ′ Ni₃(Ti,Al) former | 1.9 – 2.35 | 2.1 |
| V | 0.1 – 0.5 | 0.3 |
| Al | ≤ 0.35 | 0.2 |
| Bgrain-boundary strengthener | 0 – 0.01 | 0.01 |
| Febalance, ~53–55 % | balance |
What surface finishes work on 1.4980?
Passivate per AMS 2700 after machining; electropolish or shot peen for fatigue-critical parts; threaded fasteners are usually silver-plated or coated with dry-film lubricant to prevent galling and high-temperature seizure.
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 1.4980 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does 1.4980 cost?
1.4980 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.
1.4980 — frequently asked
What is 1.4980 used for?
1.4980 is typically used for jet engine fasteners and rings, turbocharger hardware, high-temperature bolting and aerospace structural parts. In short: A-286 under EN number; strength to 700 °C; hardest-machining PH stainless.
What is the yield strength of 1.4980?
1.4980 has a typical yield strength of 700 MPa (102 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 92% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4980 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 98% of stainless steel grades). Machine in the solution-treated state when possible; rigid setups, positive-rake carbide or ceramic tooling, low speed (15–25 m/min in STA), heavy feed and flood coolant to avoid work-hardened glaze and rapid notch wear.
Can 1.4980 be welded?
With care — weldability is rated fair (45/100). GTAW/EBW with matching or Inconel 82/718 filler in the solution condition, low heat input and no preheat; re-solution treat and age after welding to avoid strain-age (post-weld heat treatment) cracking in restrained joints.
What surface finishes work on 1.4980?
Passivate per AMS 2700 after machining; electropolish or shot peen for fatigue-critical parts; threaded fasteners are usually silver-plated or coated with dry-film lubricant to prevent galling and high-temperature seizure.
Can 1.4980 be formed, bent or molded?
Cold form or cold head in the solution-treated condition (high work-hardening rate — allow extra power and intermediate anneals); hot work 1100–1150 °C, finish above 950 °C, then solution treat and age.
What is the maximum service temperature of 1.4980?
1.4980 is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4980-STA and 1.4980-ST?
STA is the default condition — standard commercial condition for bar, forgings and fasteners: ~1000 MPa UTS with good ductility and creep strength to 700 °C. ST: softest supply condition for forming, deep drawing, machining of complex parts and welding before final aging. Yield strength is 700 MPa in STA versus 310 MPa in ST.
How much does 1.4980 cost?
1.4980 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 10269 — Steels and nickel alloys for fasteners with specified elevated/low temperature properties (X6NiCrTiMoVB25-15-2, 1.4980) — CEN (2013)
- ASTM A453/A453M — Bolting with Yield Strength 50–120 ksi, Grade 660 Classes A/B/C/D — ASTM (2020)
- AMS 5731 / AMS 5732 / AMS 5737 — Alloy bars, forgings and rings, Fe-25Ni-15Cr-2Ti (A-286) — SAE International (2019)
- AMS 5525 — Steel sheet, strip and plate, corrosion and heat resistant 15Cr-26Ni-1.3Mo-2.1Ti — SAE International (2018)
- ASM Specialty Handbook: Heat-Resistant Materials (A-286 data) — ASM International (1997)
- Metallic Materials Properties Development and Standardization (MMPDS) — A-286 chapter — FAA/Battelle (2023)
- GB/T 14992 / HB 5199 — GH2132 (2019)
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.