Stainless Steel 1.4417
EN 1.4417 · UNS J93404 · ASTM A890 Grade 5A
1.4417 (GX2CrNiMoN25-7-3, ASTM A890 Grade 5A, UNS J93404) is the European designation for the cast super duplex grade equivalent to CE3MN/2507, with 25Cr-7Ni-3Mo and nitrogen.
Reference datasheet — 1.4417 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 SA condition
1.4417 tempers and conditions
1.4417 is supplied in 5 conditions, soft to hard. SA 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 |
|---|---|---|---|---|---|---|
Spheroidize annealed | Intermediate foundry state only — intermetallic phases and unbalanced ferrite make it brittle and corrosion-prone; must be solution treated before use. | 480 | 620 | 8 | 30 HRC | 2 % IACS |
SADefault Solution annealed 1120–1150 °C + water quench | Standard supply condition for all pressure-retaining super-duplex castings; only condition with the specified corrosion resistance and toughness. | 560 | 760 | 28 | 25 HRC | — |
Solution annealed with low-temperature Charpy qualification | Order this certification level for NORSOK/offshore cryogenic-service valve and pump bodies requiring documented sub-zero toughness. | 560 | 760 | 28 | 24 HRC | 2.2 % IACS |
hot isostatically pressed, then solution annealed and quenched | Choose for thick-section subsea/high-integrity valve and pump bodies where microporosity, fatigue life and NDE acceptance are critical. | 575 | 790 | 33 | 26 HRC | 2.2 % IACS |
Centrifugally cast, solution annealed and quenched | For seamless-type rings, sleeves and pipe sections; finer, denser structure gives slightly higher strength than static castings. | 585 | 790 | 26 | 26 HRC | 2.2 % IACS |
What is 1.4417?
1.4417 (GX2CrNiMoN25-7-3, ASTM A890 Grade 5A, UNS J93404) is the European designation for the cast super duplex grade equivalent to CE3MN/2507, with 25Cr-7Ni-3Mo and nitrogen. Solution-annealed castings reach 560 MPa yield, 760 MPa tensile, 28 % elongation and 255 HB (25 HRC) with a corrosion score of 86, giving the pitting and crevice resistance needed for seawater service. Service is limited to 300 °C by 475 °C embrittlement, machining and welding are demanding, and cost is high — cast CG3M (1.3960) is the lower-cost option when chloride loading is milder. 1.4417 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,350°C (2,462 °F). 1.4417 has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 85% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 195 GPa (28.3 Msi).
What is 1.4417 used for?
- subsea valve bodies
- high-chloride pump casings
- offshore manifolds
Advantages
- Good corrosion resistance — 86/100, better than 94% of stainless steel grades
- High strength — 560 MPa (81.2 ksi), better than 85% of stainless steel grades
Limitations
- Difficult to machine — 22/100, worse than 95% of stainless steel grades
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
- Limited formability — 20/100, worse than 86% of stainless steel grades
- Low fracture toughness — 90 MPa·√m (81.9 ksi·√in), worse than 75% of stainless steel grades
1.4417 properties
Typical room-temperature values for 1.4417-SA; bars are the position among stainless steel grades.
Physical3
1.4417 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,350°C (2,462 °F).
Mechanical16
1.4417 has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 85% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
1.4417 is rated for continuous service to 300°C (572 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 13 µm/m·K (7.22 µin/in·°F).
Electrical3
1.4417 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (86/100), better than 94% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4417 takes about 60 MJ of energy and emits 4.6 kg of CO₂ — more than 70% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
1.4417's machinability is poor (22/100, worse than 95% of stainless steel grades); weldability good (60/100); formability poor (20/100).
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. 1.4417 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4417
Is 1.4417 easy to machine?
Machine like super duplex: rigid setup, sharp positive-rake carbide or coated inserts, low speed (~50–80 m/min) with heavy feed and flood coolant to cut under the work-hardened layer; avoid dwelling.
Can 1.4417 be welded?
GTAW/GMAW/SMAW with over-alloyed 25.10.4L (E/ER2594) filler, Ar+2 %N₂ shielding, interpass ≤150 °C, 0.5–2.0 kJ/mm heat input; major repairs should be followed by full re-solution and water quench.
Can 1.4417 be formed, bent or molded?
Sand or investment cast with generous risering (high shrinkage, low fluidity); always solution treat 1120–1150 °C and water quench to dissolve σ/χ and rebalance ferrite to ~40–60 %.
1.4417 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 |
|---|---|---|
| Clow-carbon cast grade | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.6 |
| Mn | ≤ 1.5 | 0.8 |
| P | ≤ 0.04 | 0.03 |
| SNORSOK orders typically ≤0.010 | ≤ 0.04 | 0.01 |
| CrEN 10283 allows 24.5–26.5 | 24 – 26 | 25 |
| Ni | 6 – 8 | 7 |
| MoEN 1.4417 nominally 3–4 %; ASTM A890/A995 Gr 5A requires 4.0–5.0 % | 3 – 5 | 4.2 |
| N | 0.1 – 0.3 | 0.2 |
| Curesidual | ≤ 1 | 0.3 |
| Fe | balance |
What surface finishes work on 1.4417?
Pickle and passivate (HNO₃-HF) after heat treatment to remove scale; glass-bead or electropolish for hygienic surfaces — no anodizing, and avoid iron-contaminating abrasives.
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 1.4417 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J93404
- ASTM
- A890 Grade 5A
- EN / DIN / Werkstoff-Nr.
- GX2CrNiMoN25-7-3
- Also called
- CE3MN
How much does 1.4417 cost?
1.4417 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.
1.4417 — frequently asked
What is 1.4417 used for?
1.4417 is typically used for subsea valve bodies, high-chloride pump casings and offshore manifolds. In short: cast super duplex 2507; highest chloride pitting resistance; 560 MPa cast yield.
What is the yield strength of 1.4417?
1.4417 has a typical yield strength of 560 MPa (81.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 85% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4417 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 95% of stainless steel grades). Machine like super duplex: rigid setup, sharp positive-rake carbide or coated inserts, low speed (~50–80 m/min) with heavy feed and flood coolant to cut under the work-hardened layer; avoid dwelling.
Can 1.4417 be welded?
Yes — weldability is rated good (60/100). GTAW/GMAW/SMAW with over-alloyed 25.10.4L (E/ER2594) filler, Ar+2 %N₂ shielding, interpass ≤150 °C, 0.5–2.0 kJ/mm heat input; major repairs should be followed by full re-solution and water quench.
What surface finishes work on 1.4417?
Pickle and passivate (HNO₃-HF) after heat treatment to remove scale; glass-bead or electropolish for hygienic surfaces — no anodizing, and avoid iron-contaminating abrasives.
Can 1.4417 be formed, bent or molded?
Sand or investment cast with generous risering (high shrinkage, low fluidity); always solution treat 1120–1150 °C and water quench to dissolve σ/χ and rebalance ferrite to ~40–60 %.
What is the maximum service temperature of 1.4417?
1.4417 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4417-SA and 1.4417-AC?
SA is the default condition — standard supply condition for all pressure-retaining super-duplex castings; only condition with the specified corrosion resistance and toughness. AC: intermediate foundry state only — intermetallic phases and unbalanced ferrite make it brittle and corrosion-prone; must be solution treated before use. Yield strength is 560 MPa in SA versus 480 MPa in AC.
How much does 1.4417 cost?
1.4417 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 A890/A890M — Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex — ASTM International (2023)
- ASTM A995/A995M — Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts — ASTM International (2020)
- EN 10283 — Corrosion resistant steel castings — CEN (2010)
- SAF 2507 / Outokumpu 2507 super duplex datasheet — Sandvik / Outokumpu (2022)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- NORSOK M-650 / M-630 material data sheets for duplex castings — Standards Norway (2020)
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.