Stainless Steel 10Kh18N9L
ASTM CF8
10Kh18N9L is the Russian GOST cast austenitic stainless steel, an 18Cr-9Ni alloy equivalent to ASTM CF8, supplied solution-annealed, as-cast (F) or HIP plus solution-annealed.
Reference datasheet — 10Kh18N9L 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
10Kh18N9L tempers and conditions
10Kh18N9L is supplied in 3 conditions, soft to hard. SA is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SADefault Solution annealed 1050–1150 °C, water quenched | Standard delivery condition for GOST 10Х18Н9Л castings: maximum corrosion resistance and toughness, carbides dissolved. | 225 | 500 | 40 | 145 HB | — |
As fabricated | Cheapest condition for non-critical, low-corrosivity parts; carbide networks reduce intergranular corrosion resistance and ductility. | 235 | 470 | 28 | 155 HB | — |
Hot isostatically pressed then solution annealed | For pressure-containing or fatigue-critical castings: HIP closes shrinkage porosity, raising ductility, toughness and fatigue life. | 235 | 520 | 48 | 145 HB | 2.4 % IACS |
What is 10Kh18N9L?
10Kh18N9L is the Russian GOST cast austenitic stainless steel, an 18Cr-9Ni alloy equivalent to ASTM CF8, supplied solution-annealed, as-cast (F) or HIP plus solution-annealed. It is the standard corrosion-resistant casting grade for CIS-region valves, pumps and fittings, with 225 MPa yield, 500 MPa tensile, 40 % elongation, 145 HB (80 HRB) and service to 650 °C. Machinability is low (score 40, about 45 % of AISI 1212) and chloride resistance is moderate (score 70) with no molybdenum. Substitute cast CF8M / 316C12 for seawater or acid-chloride duty, or CF8 / 304C15 where an ASTM or BS purchase specification is required. 10Kh18N9L has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F). 10Kh18N9L has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 99% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 193 GPa (28 Msi).
What is 10Kh18N9L used for?
- valve bodies
- pump casings
- chemical process castings
Advantages
- Readily welded — 85/100, better than 87% of stainless steel grades
- Tough — resists crack growth — 200 MPa·√m (182 ksi·√in), better than 86% of stainless steel grades
Limitations
- Low strength — 225 MPa (32.6 ksi), worse than 99% of stainless steel grades
- Limited formability — 25/100, worse than 78% of stainless steel grades
10Kh18N9L properties
Typical room-temperature values for 10Kh18N9L-SA; bars are the position among stainless steel grades.
Physical3
10Kh18N9L has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical15
10Kh18N9L has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 99% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
10Kh18N9L is rated for continuous service to 650°C (1,202 °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 16.6 µm/m·K (9.22 µin/in·°F).
Electrical3
10Kh18N9L conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 68% of stainless steel grades.
Sustainability4
Producing a kilogram of 10Kh18N9L takes about 53 MJ of energy and emits 5 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
10Kh18N9L's machinability is fair (40/100, better than 72% of stainless steel grades); weldability excellent (85/100); 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. 10Kh18N9L is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 10Kh18N9L
Is 10Kh18N9L easy to machine?
Work-hardens rapidly — use sharp positive-rake carbide, rigid setup, heavy positive feed and flood coolant; expect ~45 % of AISI 1212 rates and abrasive cast skin on the first cut.
Can 10Kh18N9L be welded?
Readily welded by TIG/MIG/SMAW with 308/308L filler; the 5–15 % delta ferrite resists hot cracking, but limit heat input and avoid slow cooling through 450–850 °C to prevent sensitization.
Can 10Kh18N9L be formed, bent or molded?
Sand or investment cast with generous risering (long freezing range, ~2.2 % solidification shrinkage); not intended for cold forming.
10Kh18N9L 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 |
|---|---|---|
| Cunstabilized; drives sensitization risk | ≤ 0.12 | 0.1 |
| Sifluidity | 0.2 – 1 | 0.7 |
| Mn | 1 – 2 | 1.4 |
| Cr | 17 – 20 | 18.5 |
| Ni | 8 – 11 | 9.5 |
| S | ≤ 0.03 | |
| P | ≤ 0.04 | |
| Curesidual | ≤ 0.3 | |
| Fe | balance |
What surface finishes work on 10Kh18N9L?
Pickle and passivate (HNO3-based) after grinding or welding; can be electropolished or mirror-polished if porosity is low, and does not accept 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 10Kh18N9L in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- CF8
How much does 10Kh18N9L cost?
10Kh18N9L 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.
10Kh18N9L — frequently asked
What is 10Kh18N9L used for?
10Kh18N9L is typically used for valve bodies, pump casings and chemical process castings. In short: GOST equivalent of CF8; CIS-market cast 304; solution-annealed or HIP options.
What is the yield strength of 10Kh18N9L?
10Kh18N9L has a typical yield strength of 225 MPa (32.6 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 99% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 10Kh18N9L easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Work-hardens rapidly — use sharp positive-rake carbide, rigid setup, heavy positive feed and flood coolant; expect ~45 % of AISI 1212 rates and abrasive cast skin on the first cut.
Can 10Kh18N9L be welded?
Yes — weldability is rated excellent (85/100). Readily welded by TIG/MIG/SMAW with 308/308L filler; the 5–15 % delta ferrite resists hot cracking, but limit heat input and avoid slow cooling through 450–850 °C to prevent sensitization.
What surface finishes work on 10Kh18N9L?
Pickle and passivate (HNO3-based) after grinding or welding; can be electropolished or mirror-polished if porosity is low, and does not accept anodizing.
Can 10Kh18N9L be formed, bent or molded?
Sand or investment cast with generous risering (long freezing range, ~2.2 % solidification shrinkage); not intended for cold forming.
What is the maximum service temperature of 10Kh18N9L?
10Kh18N9L is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 10Kh18N9L-SA and 10Kh18N9L-F?
SA is the default condition — standard delivery condition for GOST 10Х18Н9Л castings: maximum corrosion resistance and toughness, carbides dissolved. F: cheapest condition for non-critical, low-corrosivity parts; carbide networks reduce intergranular corrosion resistance and ductility. Yield strength is 225 MPa in SA versus 235 MPa in F.
How much does 10Kh18N9L cost?
10Kh18N9L 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
- GOST 977-88 — Steel castings, general specifications — Gosstandart (1988)
- ASTM A351/A351M — Castings, Austenitic, for Pressure-Containing Parts (CF8) — ASTM International (2018)
- GB/T 12230 — General purpose industrial valves, stainless steel castings (ZG12Cr18Ni9) — SAC (2016)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys (cast stainless steels) — ASM International (1990)
- Steel Castings Handbook — Steel Founders' Society of America (1995)
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.