Stainless Steel 1.4408
EN 1.4408 · UNS J92900 · ASTM CF8M
1.4408 (GX5CrNiMo19-11-2) is the European cast equivalent of 316 stainless, also designated CF8M / J92900, and the most common molybdenum-bearing cast austenitic grade.
Reference datasheet — 1.4408 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
1.4408 tempers and conditions
1.4408 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 |
|---|---|---|---|---|---|---|
Sand cast, solution annealed | Standard route for large pump casings and valve bodies; coarser grain, slightly lower strength than investment cast. | 250 | 515 | 42 | 155 HB | 2.3 % IACS |
SADefault Solution annealed | Standard supply condition for all pressure- and corrosion-service castings; carbides dissolved for maximum corrosion resistance and ductility. | 260 | 530 | 45 | 160 HB | 2.3 % IACS |
Spheroidize annealed | Only for non-critical, non-corrosive structural castings; interdendritic carbides lower ductility and corrosion resistance. | 270 | 520 | 30 | 9 HRC | 2.3 % IACS |
Hot isostatically pressed then solution annealed | Used when microporosity must be eliminated (high-pressure, fatigue-loaded or radiographed castings). | 275 | 560 | 52 | 160 HB | 2.3 % IACS |
Investment cast, solution annealed | Choose for small, thin-walled valve/pump parts needing near-net shape and a finer, slightly stronger structure. | 280 | 550 | 45 | 165 HB | 2.3 % IACS |
What is 1.4408?
1.4408 (GX5CrNiMo19-11-2) is the European cast equivalent of 316 stainless, also designated CF8M / J92900, and the most common molybdenum-bearing cast austenitic grade. It is used wherever chloride and pitting resistance beyond CF8 is needed, giving 260 MPa yield, 530 MPa tensile, 45 % elongation, 160 HB, service to 800 °C and a corrosion-resistance score of 72; it is supplied as sand, investment, centrifugal and HIP + annealed castings. Its 0.08 % max carbon can sensitise after welding, so use CF3M for as-welded pressure service, and 1.4308 (CF8) where molybdenum is unnecessary. 1.4408 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,370°C (2,498 °F). 1.4408 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 193 GPa (28 Msi).
What is 1.4408 used for?
- marine pump and valve castings
- chemical process equipment
- food and pharma equipment
Advantages
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- Low strength — 260 MPa (37.7 ksi), worse than 84% of stainless steel grades
1.4408 properties
Typical room-temperature values for 1.4408-SA; bars are the position among stainless steel grades.
Physical3
1.4408 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical15
1.4408 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
1.4408 is rated for continuous service to 800°C (1,472 °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 16 µm/m·K (8.89 µin/in·°F).
Electrical3
1.4408 conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 73% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4408 takes about 53 MJ of energy and emits 4.5 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 75%.
Manufacturability7
1.4408's machinability is fair (35/100, better than 51% of stainless steel grades); weldability very good (75/100).
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. 1.4408 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4408
Is 1.4408 easy to machine?
Machines like 316: gummy and work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed, 60–120 m/min and flood coolant; avoid dwelling and watch for hard casting skin/sand inclusions.
Can 1.4408 be welded?
Very good weldability with 316L/E316L-15 or ER316L filler (or 309L to carbon steel); the 5–20% δ-ferrite suppresses hot cracking, keep interpass low and re-solution-anneal repaired pressure castings where the code requires it.
Can 1.4408 be formed, bent or molded?
Supplied as sand or investment castings; excellent fluidity and low hot-tearing tendency, but allow ~2.0–2.5% solidification shrinkage and generous risering on heavy sections, plus 1050–1120 °C water quench after casting.
1.4408 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 |
|---|---|---|
| CASTM CF8M allows ≤0.08 | ≤ 0.07 | 0.05 |
| Si | ≤ 1.5 | 1 |
| Mn | ≤ 1.5 | 1 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| CrASTM CF8M: 18.0–21.0 | 18 – 20 | 19 |
| Ni | 9 – 12 | 10.5 |
| MoASTM CF8M: 2.0–3.0 | 2 – 2.5 | 2.3 |
| NEN 10213 limit | ≤ 0.2 | |
| Fe | balance |
What surface finishes work on 1.4408?
Passivate per ASTM A967 or electropolish after machining; shot-blast/pickle to remove casting skin; can be mechanically polished, though porosity limits mirror finishes — no anodizing.
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 1.4408 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J92900
- ASTM
- CF8M
- EN / DIN / Werkstoff-Nr.
- GX5CrNiMo19-11-2
How much does 1.4408 cost?
1.4408 is a premium-cost stainless steel ($$$), cheaper than about 51% 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.
1.4408 — frequently asked
What is 1.4408 used for?
1.4408 is typically used for marine pump and valve castings, chemical process equipment and food and pharma equipment. In short: cast 316 for chlorides; most widely stocked Mo cast grade; good weldability, moderate machinability.
What is the yield strength of 1.4408?
1.4408 has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 84% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4408 easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of stainless steel grades). Machines like 316: gummy and work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed, 60–120 m/min and flood coolant; avoid dwelling and watch for hard casting skin/sand inclusions.
Can 1.4408 be welded?
Yes — weldability is rated very good (75/100). Very good weldability with 316L/E316L-15 or ER316L filler (or 309L to carbon steel); the 5–20% δ-ferrite suppresses hot cracking, keep interpass low and re-solution-anneal repaired pressure castings where the code requires it.
What surface finishes work on 1.4408?
Passivate per ASTM A967 or electropolish after machining; shot-blast/pickle to remove casting skin; can be mechanically polished, though porosity limits mirror finishes — no anodizing.
Can 1.4408 be formed, bent or molded?
Supplied as sand or investment castings; excellent fluidity and low hot-tearing tendency, but allow ~2.0–2.5% solidification shrinkage and generous risering on heavy sections, plus 1050–1120 °C water quench after casting.
What is the maximum service temperature of 1.4408?
1.4408 is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4408-SA and 1.4408 IC-SA?
SA is the default condition — standard supply condition for all pressure- and corrosion-service castings; carbides dissolved for maximum corrosion resistance and ductility. IC-SA: choose for small, thin-walled valve/pump parts needing near-net shape and a finer, slightly stronger structure. Yield strength is 260 MPa in SA versus 280 MPa in IC-SA.
How much does 1.4408 cost?
1.4408 is a premium-cost stainless steel ($$$), cheaper than about 51% 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 10213 — Steel castings for pressure purposes (GX5CrNiMo19-11-2, 1.4408) — CEN (2016)
- EN 10283 — Corrosion resistant steel castings — CEN (2010)
- ASTM A351/A351M — Castings, austenitic, for pressure-containing parts (CF8M, J92900) — ASTM (2022)
- ASTM A743/A744 — Corrosion-resistant iron-chromium-nickel castings — ASTM (2021)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America (1995)
- 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.