Stainless Steel 10Kh18N9L-SA
Heat-treated state · default condition
ASTM CF8
SA = solution annealed 1050–1150 °C, water quenched
Standard delivery condition for GOST 10Х18Н9Л castings: maximum corrosion resistance and toughness, carbides dissolved.
Values for the SA condition
Other 10Kh18N9L tempers and conditions
10Kh18N9L is listed in 3 conditions; see the grade overview at 10Kh18N9L.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SADefaultThis page 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-SA?
10Kh18N9L-SA is 10Kh18N9L heat treated to SA — standard delivery condition for GOST 10Х18Н9Л castings: maximum corrosion resistance and toughness, carbides dissolved. 10Kh18N9L-SA 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). 10Kh18N9L-SA 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).
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-SA properties
Typical room-temperature values for 10Kh18N9L-SA; 12 are specific to this condition. Other listed values are 10Kh18N9L reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
10Kh18N9L-SA 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-SA 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-SA 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-SA 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-SA 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-SA'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. Confirm any required mill or lot documentation when quoting.
Working with 10Kh18N9L-SA
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.
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.
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 | — |
10Kh18N9L-SA — frequently asked
What is 10Kh18N9L-SA used for?
10Kh18N9L-SA 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-SA?
10Kh18N9L-SA 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-SA 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-SA 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-SA?
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-SA 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-SA?
10Kh18N9L-SA 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.