Stainless Steel 1.4518
EN 1.4518 · UNS J92800 · ASTM CF3M
1.4518 (GX2CrNiMo19-11-3, CF3M, J92800) is a low-carbon, molybdenum-bearing cast austenitic stainless steel that corresponds to wrought 316L and is not nitrogen-strengthened.
Reference datasheet — 1.4518 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 AT condition
1.4518 tempers and conditions
1.4518 is supplied in 5 conditions, soft to hard. AT 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 |
|---|---|---|---|---|---|---|
ATDefault solution annealed 1040–1120 °C and water quenched | Standard delivery condition for all pressure-retaining and corrosion-service castings; maximum corrosion resistance and ductility. | 260 | 530 | 48 | 150 HB | 2.3 % IACS |
Solution annealed, weld-repaired (as-welded, no re-anneal) | Practical condition for foundry-repaired castings — the ≤0.03 % C level keeps the heat-affected zone free of sensitisation without a second solution treatment. | 265 | 520 | 40 | 160 HB | 2.3 % IACS |
hot isostatically pressed then solution annealed | Choose for pressure-critical or fatigue-loaded castings where internal microporosity must be closed (subsea, nuclear, high-cycle pump parts). | 270 | 545 | 55 | 150 HB | 2.3 % IACS |
Centrifugally cast, solution annealed | For cylindrical bodies, sleeves and pipe (ASTM A451/A452-style supply) where a dense, porosity-free wall and machinable bore are needed. | 270 | 545 | 45 | 155 HB | 2.3 % IACS |
Spheroidize annealed | Only for non-critical, non-corrosive structural castings; interdendritic segregation and possible sigma/carbide give lower ductility and corrosion resistance. | 275 | 520 | 30 | 160 HB | 2.3 % IACS |
Supply forms, finishes and certifications
Ways 1.4518 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
IC-AT | Investment cast, solution annealed | Surface finish |
What is 1.4518?
1.4518 (GX2CrNiMo19-11-3, CF3M, J92800) is a low-carbon, molybdenum-bearing cast austenitic stainless steel that corresponds to wrought 316L and is not nitrogen-strengthened. Engineers specify it for general corrosion resistance in chlorides and dilute acids combined with good weldability, and it is supplied as sand and investment castings for pressure-containing parts. Solution-annealed values are 260 MPa yield, 530 MPa tensile, 48 % elongation and about 150 HB, with service to 550 °C. Strength is well below cast duplex grades such as CD4MCu, so choose duplex when both higher strength and higher pitting resistance are required. 1.4518 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,385°C (2,525 °F). 1.4518 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 48% and the elastic modulus is 195 GPa (28.3 Msi).
What is 1.4518 used for?
- valve bodies
- pump housings
- food and chemical processing equipment
- marine fittings
Advantages
- Readily welded — 88/100, better than 91% of stainless steel grades
- Ductile — tolerates forming and impact — 48%, better than 85% of stainless steel grades
Limitations
- 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
- Limited formability — 25/100, worse than 78% of stainless steel grades
1.4518 properties
Typical room-temperature values for 1.4518-AT; bars are the position among stainless steel grades.
Physical3
1.4518 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Mechanical16
1.4518 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 48% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
1.4518 is rated for continuous service to 550°C (1,022 °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 16.2 µm/m·K (9 µin/in·°F).
Electrical3
1.4518 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 1.4518 takes about 55 MJ of energy and emits 5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 75%.
Manufacturability8
1.4518's machinability is fair (40/100, better than 72% of stainless steel grades); weldability excellent (88/100); formability poor (25/100).
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. 1.4518 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4518
Is 1.4518 easy to machine?
Gummy and work-hardening: use rigid setups, sharp positive-rake carbide, 60–110 m/min cutting speed, heavy feed to cut under the hardened skin, and flood coolant; remove the casting skin/sand inclusions in a first sacrificial pass.
Can 1.4518 be welded?
Excellent — GTAW/SMAW/FCAW with 316L or ER316LSi filler (309L for dissimilar joints), low heat input, interpass ≤150 °C; no preheat and no post-weld solution anneal needed for corrosion service thanks to ≤0.03 % C.
Can 1.4518 be formed, bent or molded?
Cast only — good fluidity but a wide freezing range demands generous risering, chills at heavy sections and controlled ferrite (3–15 FN) to avoid hot tearing and microporosity; HIP if leak-tightness is critical.
1.4518 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 |
|---|---|---|
| Csuper-low carbon, prevents sensitisation | ≤ 0.03 | 0.02 |
| SiEN limit; ASTM CF3M ≤1.50 | ≤ 1.5 | 1 |
| Mn | ≤ 2 | 1 |
| P | ≤ 0.04 | 0.03 |
| SEN 10283 typically ≤0.020 | ≤ 0.03 | 0.02 |
| Cr | 18 – 20 | 19 |
| Ni | 9 – 13 | 11 |
| Modesignation -3 reflects upper-Mo aim | 2 – 3 | 2.7 |
| Nresidual; not intentionally alloyed | ≤ 0.2 | 0.05 |
| Fe | balance |
What surface finishes work on 1.4518?
Grit-blast then pickle/passivate per ASTM A967 (never use carbon-steel media or tooling); electropolishing gives hygienic Ra <0.8 µm surfaces; do not anodize.
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 1.4518 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J92800
- ASTM
- CF3M
- EN / DIN / Werkstoff-Nr.
- GX2CrNiMo19-11-3
How much does 1.4518 cost?
1.4518 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.
1.4518 — frequently asked
What is 1.4518 used for?
1.4518 is typically used for valve bodies, pump housings, food and chemical processing equipment and marine fittings. In short: cast 316L equivalent; weldable without post-anneal; high-ductility stainless casting.
What is the yield strength of 1.4518?
1.4518 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 1.4518 easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Gummy and work-hardening: use rigid setups, sharp positive-rake carbide, 60–110 m/min cutting speed, heavy feed to cut under the hardened skin, and flood coolant; remove the casting skin/sand inclusions in a first sacrificial pass.
Can 1.4518 be welded?
Yes — weldability is rated excellent (88/100). Excellent — GTAW/SMAW/FCAW with 316L or ER316LSi filler (309L for dissimilar joints), low heat input, interpass ≤150 °C; no preheat and no post-weld solution anneal needed for corrosion service thanks to ≤0.03 % C.
What surface finishes work on 1.4518?
Grit-blast then pickle/passivate per ASTM A967 (never use carbon-steel media or tooling); electropolishing gives hygienic Ra <0.8 µm surfaces; do not anodize.
Can 1.4518 be formed, bent or molded?
Cast only — good fluidity but a wide freezing range demands generous risering, chills at heavy sections and controlled ferrite (3–15 FN) to avoid hot tearing and microporosity; HIP if leak-tightness is critical.
What is the maximum service temperature of 1.4518?
1.4518 is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4518-AT and 1.4518-AC?
AT is the default condition — standard delivery condition for all pressure-retaining and corrosion-service castings; maximum corrosion resistance and ductility. AC: only for non-critical, non-corrosive structural castings; interdendritic segregation and possible sigma/carbide give lower ductility and corrosion resistance. Yield strength is 260 MPa in AT versus 275 MPa in AC.
How much does 1.4518 cost?
1.4518 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 — CEN (2016)
- EN 10283 — Corrosion resistant steel castings — CEN (2010)
- ASTM A351/A351M — Castings, Austenitic, for Pressure-Containing Parts (CF3M) — ASTM (2023)
- ASTM A743/A744 — Corrosion-Resistant Iron-Chromium-Nickel Castings — ASTM (2021)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America / ASM (1995)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- GB/T 2100 / ZG022Cr19Ni10Mo3 general purpose corrosion-resisting steel castings — SAC (2017)
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.