Stainless Steel CH10
UNS J93401
CH10 (J93401) is a low-carbon, high chromium-nickel cast austenitic stainless steel, comparable to CH20 but with lower carbon for better weldability, supplied solution annealed at 250 MPa yield, 530 MPa tensile strength, 38% elongation and 165 HB (85 HRB).
Reference datasheet — CH10 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
CH10 tempers and conditions
CH10 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 | Standard supply condition for ASTM A351/A743 castings; maximum ductility and corrosion resistance. | 250 | 530 | 38 | 165 HB | — |
Spheroidize annealed | Used only for non-critical high-temperature parts where corrosion service and code acceptance are not required. | 260 | 500 | 22 | 180 HB | 2.2 % IACS |
Centrifugally cast, solution annealed | Pick for tubes, rings and cylinders needing denser, more uniform structure and slightly higher strength than static castings. | 270 | 560 | 40 | 170 HB | 2.2 % IACS |
What is CH10?
CH10 (J93401) is a low-carbon, high chromium-nickel cast austenitic stainless steel, comparable to CH20 but with lower carbon for better weldability, supplied solution annealed at 250 MPa yield, 530 MPa tensile strength, 38% elongation and 165 HB (85 HRB). Its main attraction is a 1000 °C maximum service temperature, so it is used for furnace components and heat-resistant valve castings in sand, static and centrifugally cast forms. Corrosion resistance is moderate (score 64) and sigma-phase embrittlement must be controlled through ferrite and interpass control; CH20 remains the choice where higher carbon creep strength is preferred. CH10 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). CH10 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 91% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 193 GPa (28 Msi).
What is CH10 used for?
- High-temperature furnace components
- Heat-resistant valve castings
- Furnace rolls and centrifugally cast tubes
- Radiant tube and burner parts
- Heat-treatment fixtures, trays and grids
- Kiln and calciner internals
- Exhaust and flue gas ductwork castings
Advantages
- High service temperature — 1,000°C (1,832 °F), better than 88% of stainless steel grades
Limitations
- Low strength — 250 MPa (36.3 ksi), worse than 91% 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
CH10 properties
Typical room-temperature values for CH10-SA; bars are the position among stainless steel grades.
Physical3
CH10 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
CH10 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 91% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
CH10 is rated for continuous service to 1,000°C (1,832 °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
CH10 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (64/100), better than 54% of stainless steel grades.
Sustainability4
Producing a kilogram of CH10 takes about 60 MJ of energy and emits 4.6 kg of CO₂ — more than 70% of stainless steel grades. Typical recycled content is 70%.
Manufacturability8
CH10's machinability is fair (35/100, better than 51% of stainless steel grades); weldability very good (72/100); 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. CH10 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CH10
Is CH10 easy to machine?
Gummy and work-hardening — use rigid setups, sharp positive-rake carbide, heavy feed, low-to-moderate speed and flood coolant; avoid dwelling.
Can CH10 be welded?
Readily welded with GTAW/SMAW using ER309L/E309L filler; low carbon minimizes HAZ carbide precipitation, keep interpass below ~150 °C and control ferrite to limit σ-phase.
Can CH10 be formed, bent or molded?
Supplied as sand or centrifugal castings — design generous fillets and risers for the wide freezing range; cold forming is not a normal route.
CH10 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 |
|---|---|---|
| Clow-carbon version of CH20 | ≤ 0.1 | 0.07 |
| Mn | ≤ 1.5 | 1 |
| Si | ≤ 2 | 1.2 |
| P | ≤ 0.04 | |
| S | ≤ 0.04 | |
| Cr | 22 – 26 | 24 |
| Ni | 12 – 15 | 13 |
| Moresidual, not intentionally added | ≤ 0.5 | |
| Fe | balance |
What surface finishes work on CH10?
Passivate per ASTM A967 or pickle/electropolish after grinding; do not anodize. Shot blasting plus pickling gives a uniform oxide-free surface.
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 CH10 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J93401
How much does CH10 cost?
CH10 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.
CH10 — frequently asked
What is CH10 used for?
CH10 is typically used for high-temperature furnace components, heat-resistant valve castings, furnace rolls and centrifugally cast tubes, radiant tube and burner parts, heat-treatment fixtures, trays and grids and kiln and calciner internals. In short: 1000 °C cast austenitic; weldable low-carbon CH20; furnace and heat-treat castings.
What is the yield strength of CH10?
CH10 has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 91% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is CH10 easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of stainless steel grades). Gummy and work-hardening — use rigid setups, sharp positive-rake carbide, heavy feed, low-to-moderate speed and flood coolant; avoid dwelling.
Can CH10 be welded?
Yes — weldability is rated very good (72/100). Readily welded with GTAW/SMAW using ER309L/E309L filler; low carbon minimizes HAZ carbide precipitation, keep interpass below ~150 °C and control ferrite to limit σ-phase.
What surface finishes work on CH10?
Passivate per ASTM A967 or pickle/electropolish after grinding; do not anodize. Shot blasting plus pickling gives a uniform oxide-free surface.
Can CH10 be formed, bent or molded?
Supplied as sand or centrifugal castings — design generous fillets and risers for the wide freezing range; cold forming is not a normal route.
What is the maximum service temperature of CH10?
CH10 is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CH10-SA and CH10 CENT-SA?
SA is the default condition — standard supply condition for ASTM A351/A743 castings; maximum ductility and corrosion resistance. CENT-SA: pick for tubes, rings and cylinders needing denser, more uniform structure and slightly higher strength than static castings. Yield strength is 250 MPa in SA versus 270 MPa in CENT-SA.
How much does CH10 cost?
CH10 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)
- 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)
- 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.