Stainless Steel CF10M
ASTM CF10M · UNS J92901
CF10M (UNS J92901) is a molybdenum-bearing 19Cr-9Ni-2Mo cast austenitic stainless steel to ASTM A351, similar to CF8M but with standard (higher) carbon content, giving improved pitting resistance in chloride-containing media.
Reference datasheet — CF10M 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
CF10M tempers and conditions
CF10M is supplied in 2 conditions, soft to hard. SA is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SADefault Solution annealed (≥1040 °C, water quenched) per ASTM A351/A743 | Standard supply condition for pressure-containing castings: carbides dissolved, maximum corrosion resistance and ductility. | 250 | 520 | 45 | 160 HB | — |
Spheroidize annealed | Only for non-pressure, non-corrosive structural castings — interdendritic carbides reduce ductility and intergranular corrosion resistance. | 260 | 500 | 28 | 175 HB | 2.3 % IACS |
Supply forms, finishes and certifications
Ways CF10M is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CPF10M | Centrifugally cast pipe, solution annealed | Surface finish |
What is CF10M?
CF10M (UNS J92901) is a molybdenum-bearing 19Cr-9Ni-2Mo cast austenitic stainless steel to ASTM A351, similar to CF8M but with standard (higher) carbon content, giving improved pitting resistance in chloride-containing media. Typical solution-annealed properties are 250 MPa yield, 520 MPa tensile, 45 % elongation and 160 HB (84 HRB), with a corrosion resistance score of 70 and maximum service temperature 650 °C. Conditions on file are SA, AC and CPF10M. The higher carbon makes it sensitisation-prone after heavy weld repair, so CF3M is the alternative where as-welded intergranular resistance is required. CF10M has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,400°C (2,552 °F). CF10M has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 91% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 193 GPa (28 Msi).
What is CF10M used for?
- valve bodies
- pump casings
- chemical process castings
- marine hardware
Advantages
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- Low strength — 250 MPa (36.3 ksi), worse than 91% of stainless steel grades
- Limited formability — 15/100, worse than 91% of stainless steel grades
- Hard to polish — 55/100, worse than 89% of stainless steel grades
CF10M properties
Typical room-temperature values for CF10M-SA; bars are the position among stainless steel grades.
Physical3
CF10M has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical14
CF10M has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 91% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
CF10M is rated for continuous service to 650°C (1,202 °F). It conducts heat at 14.5 W/m·K (8.38 BTU/hr·ft·°F), worse than 72% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
CF10M conducts electricity at 2.3 % IACS, better than 55% 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 CF10M takes about 52 MJ of energy and emits 4.6 kg of CO₂ — less than 76% of stainless steel grades. Typical recycled content is 75%.
Manufacturability8
CF10M's machinability is fair (40/100, better than 72% of stainless steel grades); weldability good (65/100); formability poor (15/100).
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. CF10M is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CF10M
Is CF10M easy to machine?
Work-hardening and gummy: use rigid setups, sharp coated carbide, positive rake, heavy positive feed, 60–110 m/min, flood coolant; avoid dwelling to prevent glazing.
Can CF10M be welded?
Readily welded with ER316L/E316L-15 or matching CF10M filler; no preheat, interpass <150 °C, back-purge; re-solution anneal after major weld repair to restore intergranular corrosion resistance at this carbon level.
Can CF10M be formed, bent or molded?
Sand or investment casting with generous risers and chills (long freezing range, ~2.2% solidification shrinkage); keep ferrite 5–20 FN (Schoefer) for hot-tear resistance and weldability.
CF10M 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 |
|---|---|---|
| Cstandard-carbon version of CF8M | 0.04 – 0.1 | 0.07 |
| Mn | ≤ 1.5 | 1 |
| Si | ≤ 1.5 | 1.2 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.04 | 0.02 |
| Cr | 18 – 21 | 19.5 |
| Ni | 9 – 12 | 10 |
| Mopitting resistance in chlorides | 2 – 3 | 2.4 |
| Fe | balance |
What surface finishes work on CF10M?
Pickle and passivate per ASTM A967/A380 after machining and welding; electropolish for hygienic service; no anodizing — plating rarely needed.
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 CF10M in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J92901
How much does CF10M cost?
CF10M 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.
CF10M — frequently asked
What is CF10M used for?
CF10M is typically used for valve bodies, pump casings, chemical process castings and marine hardware. In short: mo-bearing chloride-resistant casting; higher-carbon CF8M variant; best pitting resistance in family.
What is the yield strength of CF10M?
CF10M has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 91% of stainless steel grades. Strength varies by condition: see the 2 listed tempers.
Is CF10M easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Work-hardening and gummy: use rigid setups, sharp coated carbide, positive rake, heavy positive feed, 60–110 m/min, flood coolant; avoid dwelling to prevent glazing.
Can CF10M be welded?
Yes — weldability is rated good (65/100). Readily welded with ER316L/E316L-15 or matching CF10M filler; no preheat, interpass <150 °C, back-purge; re-solution anneal after major weld repair to restore intergranular corrosion resistance at this carbon level.
What surface finishes work on CF10M?
Pickle and passivate per ASTM A967/A380 after machining and welding; electropolish for hygienic service; no anodizing — plating rarely needed.
Can CF10M be formed, bent or molded?
Sand or investment casting with generous risers and chills (long freezing range, ~2.2% solidification shrinkage); keep ferrite 5–20 FN (Schoefer) for hot-tear resistance and weldability.
What is the maximum service temperature of CF10M?
CF10M 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 CF10M-SA and CF10M-AC?
SA is the default condition — standard supply condition for pressure-containing castings: carbides dissolved, maximum corrosion resistance and ductility. AC: only for non-pressure, non-corrosive structural castings — interdendritic carbides reduce ductility and intergranular corrosion resistance. Yield strength is 250 MPa in SA versus 260 MPa in AC.
How much does CF10M cost?
CF10M 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
- ASTM A351/A351M — Castings, Austenitic, for Pressure-Containing Parts — ASTM International (2018)
- ASTM A743/A743M — Castings, Iron-Chromium-Nickel, Corrosion Resistant, for General Application — ASTM International (2021)
- ASTM A451/A451M — Centrifugally Cast Austenitic Steel Pipe for High-Temperature Service — ASTM International (2021)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
- 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)
- High-Alloy Data Sheets, Corrosion Resistant Type CF10M — SFSA (2004)
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.