Stainless Steel S32053
UNS S32053 · ASTM A240
S32053 is a high-alloy Cr-Ni-Mo-N superaustenitic stainless (ASTM A240) designed for chloride and acid service where standard 300-series or duplex grades are insufficient.
Reference datasheet — S32053 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
S32053 tempers and conditions
S32053 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 plate, sheet, bar and tube; maximum corrosion resistance and ductility. | 380 | 750 | 45 | 14 HRC | 1.8 % IACS |
Cold drawn | Pick for pump/valve shafts, fasteners and machined fittings needing higher yield strength and tighter tolerance. | 600 | 850 | 25 | 26 HRC | 1.8 % IACS |
CW 1/4 Hard | Pick when higher strength is needed in strip or small bar and full annealed ductility is not required. | 650 | 900 | 20 | 29 HRC | 1.8 % IACS |
Supply forms, finishes and certifications
Ways S32053 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
TUBE-SA | Tube SA | Supply form |
CRA-2B | CRA 2B | Surface finish |
HRAP | Hot rolled, solution annealed and pickled plate | Surface finish |
What is S32053?
S32053 is a high-alloy Cr-Ni-Mo-N superaustenitic stainless (ASTM A240) designed for chloride and acid service where standard 300-series or duplex grades are insufficient. Solution-annealed material offers 380 MPa yield, 750 MPa tensile, 45 % elongation and about 200 HB, and is available as plate, hot- and cold-rolled sheet, cold-drawn and quarter-hard bar, and annealed tube. Machinability is low (score 25) and joints need over-alloyed nickel-base consumables plus post-weld pickling; S31254 or S31266 are the nearest alternatives depending on the corrosion demand. S32053 has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,330°C (2,426 °F). S32053 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi).
What is S32053 used for?
- chemical process equipment
- pollution control scrubbers
- marine hardware
- acid handling piping
Advantages
- Good corrosion resistance — 86/100, better than 94% of stainless steel grades
- Tough — resists crack growth — 200 MPa·√m (182 ksi·√in), better than 86% of stainless steel grades
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- Poor heat conductor — 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades
- Difficult to machine — 25/100, worse than 88% of stainless steel grades
- Low electrical conductivity — 1.8 % IACS, worse than 87% of stainless steel grades
- High embodied carbon — 5.6 kg CO₂/kg, worse than 83% of stainless steel grades
S32053 properties
Typical room-temperature values for S32053-SA; bars are the position among stainless steel grades.
Physical3
S32053 has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,330°C (2,426 °F).
Mechanical17
S32053 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
S32053 is rated for continuous service to 425°C (797 °F). It conducts heat at 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades. Thermal expansion is 14.5 µm/m·K (8.06 µin/in·°F).
Electrical3
S32053 conducts electricity at 1.8 % IACS, worse than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (86/100), better than 94% of stainless steel grades.
Sustainability4
Producing a kilogram of S32053 takes about 70 MJ of energy and emits 5.6 kg of CO₂ — more than 81% of stainless steel grades. Typical recycled content is 45%.
Manufacturability7
S32053's machinability is poor (25/100, worse than 88% of stainless steel grades); weldability very good (70/100); formability good (65/100).
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. S32053 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S32053
Is S32053 easy to machine?
Tough, gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speeds and copious high-pressure coolant; avoid dwelling to prevent glazing.
Can S32053 be welded?
Weldable by GTAW/GMAW/SMAW with overalloyed Ni-base consumables (ERNiCrMo-3/-4 or ERNiCrMo-13); keep heat input and interpass temperature low, no preheat, no PWHT, and use low-heat stringer beads to avoid sigma/chi and hot cracking.
Can S32053 be formed, bent or molded?
Cold forms well but needs 1.5–2× the press force of 304 and generous springback allowance; hot work 1150–1200 °C with rapid cooling, then re-solution anneal ~1120–1180 °C and quench.
S32053 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 |
|---|---|---|
| C | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 1 | 0.7 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.01 | 0 |
| Cr | 22 – 24 | 23 |
| Ni | 24 – 26 | 25 |
| Mo | 5 – 6 | 5.5 |
| Nnitrogen strengthens and boosts pitting resistance | 0.17 – 0.22 | 0.2 |
| Febalance, ≈43–46 % | balance |
What surface finishes work on S32053?
Pickle and passivate (ASTM A380/A967) or electropolish after fabrication to remove heat tint and restore full pitting resistance; takes a bright mechanical polish, no 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 S32053 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- A240
How much does S32053 cost?
S32053 is a high-cost stainless steel ($$$$), pricier than about 78% 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.
S32053 — frequently asked
What is S32053 used for?
S32053 is typically used for chemical process equipment, pollution control scrubbers, marine hardware and acid handling piping. In short: good formability for superaustenitic; above duplex in chloride service; needs Ni-base weld filler.
What is the yield strength of S32053?
S32053 has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 52% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is S32053 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 88% of stainless steel grades). Tough, gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speeds and copious high-pressure coolant; avoid dwelling to prevent glazing.
Can S32053 be welded?
Yes — weldability is rated very good (70/100). Weldable by GTAW/GMAW/SMAW with overalloyed Ni-base consumables (ERNiCrMo-3/-4 or ERNiCrMo-13); keep heat input and interpass temperature low, no preheat, no PWHT, and use low-heat stringer beads to avoid sigma/chi and hot cracking.
What surface finishes work on S32053?
Pickle and passivate (ASTM A380/A967) or electropolish after fabrication to remove heat tint and restore full pitting resistance; takes a bright mechanical polish, no anodizing.
Can S32053 be formed, bent or molded?
Cold forms well but needs 1.5–2× the press force of 304 and generous springback allowance; hot work 1150–1200 °C with rapid cooling, then re-solution anneal ~1120–1180 °C and quench.
What is the maximum service temperature of S32053?
S32053 is rated for continuous use to about 425°C (797 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S32053-SA and S32053-CD?
SA is the default condition — standard supply condition for plate, sheet, bar and tube; maximum corrosion resistance and ductility. CD: pick for pump/valve shafts, fasteners and machined fittings needing higher yield strength and tighter tolerance. Yield strength is 380 MPa in SA versus 600 MPa in CD.
How much does S32053 cost?
S32053 is a high-cost stainless steel ($$$$), pricier than about 78% 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 A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip — ASTM International (2023)
- ASTM A276/A479 — Stainless Steel Bars and Shapes — ASTM International (2022)
- ASTM A249/A213/A312 — Stainless Steel Tube and Pipe — ASTM International (2022)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Superaustenitic stainless steel (23Cr-25Ni-5.5Mo-N) product data — specialty stainless producers (2022)
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.