Stainless Steel S20432
UNS S20432
S20432 is a modified low-nickel Cr-Mn-Ni austenitic stainless in the Type-201 family, balancing draw formability against alloy cost for structural and decorative sheet.
Reference datasheet — S20432 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 Annealed condition
S20432 tempers and conditions
S20432 is supplied in 7 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault solution/bright annealed sheet & coil (2B, BA, No.1) | Default stocked condition: maximum ductility for deep drawing, roll forming and welding. | 370 | 745 | 50 | 195 HB | — |
Lightly cold rolled | Slight strength/stiffness gain while keeping near-annealed formability for shallow-formed panels. | 400 | 690 | 42 | 13 HRC | 2.5 % IACS |
Cold rolled temper | Mild temper rolling for flat, springy panels that still tolerate light bending. | 450 | 760 | 35 | 17 HRC | 2.5 % IACS |
Quarter hard | Common structural temper for clamps, brackets and roll-formed profiles needing higher yield. | 620 | 930 | 28 | 25 HRC | — |
Half hard | High-yield strip for springy clips, bands and stiff thin-gauge structures with only light bends. | 830 | 1,100 | 16 | 32 HRC | 2.4 % IACS |
Three-quarter hard | Near-maximum strength strip for flat springs and highly loaded thin sections. | 990 | 1,250 | 9 | 38 HRC | 2.4 % IACS |
heavily cold rolled | Maximum strength/spring temper strip; forming limited to very gentle radii, no deep drawing. | 1,030 | 1,320 | 6 | 41 HRC | — |
What is S20432?
S20432 is a modified low-nickel Cr-Mn-Ni austenitic stainless in the Type-201 family, balancing draw formability against alloy cost for structural and decorative sheet. Annealed material provides 370 MPa yield, 745 MPa tensile, 50 % elongation, 195 HB (90 HRB) and service to 760 °C, and is rolled in 1/16 through full-hard tempers. It welds acceptably (score 70) but work-hardens quickly and rust-stains earlier than 304 outdoors, so indoor or coated service is preferred. S20431 and Type 304 are the nearest alternatives. S20432 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F). S20432 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 50% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 197 GPa (28.6 Msi).
What is S20432 used for?
- structural sheet
- railings
- automotive trim
Advantages
- Ductile — tolerates forming and impact — 50%, better than 90% of stainless steel grades
- Forms and bends easily — 78/100, better than 90% of stainless steel grades
Limitations
- Needs corrosion protection — 40/100, worse than 93% of stainless steel grades
S20432 properties
Typical room-temperature values for S20432-Annealed; bars are the position among stainless steel grades.
Physical3
S20432 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical14
S20432 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 50% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 197 GPa (28.6 Msi).
Thermal6
S20432 is rated for continuous service to 760°C (1,400 °F). It conducts heat at 16.2 W/m·K (9.36 BTU/hr·ft·°F), better than 64% of stainless steel grades. Thermal expansion is 15.7 µm/m·K (8.72 µin/in·°F).
Electrical3
S20432 conducts electricity at 2.5 % IACS, better than 75% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 93% of stainless steel grades.
Sustainability4
Producing a kilogram of S20432 takes about 45 MJ of energy and emits 4 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
S20432's machinability is fair (42/100, better than 79% of stainless steel grades); weldability very good (70/100); formability very good (78/100).
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. S20432 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S20432
Is S20432 easy to machine?
Work-hardens fast and runs gummy — use rigid setups, sharp positive-rake carbide, heavy constant feed, no dwelling, and flood coolant; expect ~45 % of AISI 1212 rates.
Can S20432 be welded?
Weldable by GTAW/GMAW/resistance spot with 308L or 307/Cr-Mn fillers; keep heat input low, no preheat, back-purge for appearance, and avoid sensitising holds if the higher-carbon variant is used.
Can S20432 be formed, bent or molded?
Excellent stretch/deep-draw behaviour in the annealed temper but high springback and forming loads; allow ~15–25 % more press tonnage than 304 and use interstage anneals for severe multi-stage draws.
S20432 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 variants (≤0.03) supplied as 'L' modification | ≤ 0.15 | 0.08 |
| Si | ≤ 1 | 0.5 |
| MnMn substitutes for Ni as austenite stabiliser; mill practice varies widely | 5.5 – 9.5 | 7.5 |
| P | ≤ 0.06 | 0.04 |
| S | ≤ 0.03 | 0.01 |
| Crwide band across mills; check certificate | 14 – 17.5 | 16 |
| Nideliberately reduced vs 304 | 1 – 4.5 | 2.5 |
| Cuadded in Cu-bearing (204Cu-type) modifications to improve drawability | ≤ 3 | 1.5 |
| Nstrengthens and stabilises austenite | ≤ 0.25 | 0.12 |
| Fe | balance |
What surface finishes work on S20432?
Takes No.4 brushed and mirror polish well and accepts PVD colour coating; passivate after fabrication and expect earlier rust staining than 304 outdoors — do not anodize.
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 S20432 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- S20431
How much does S20432 cost?
S20432 is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
S20432 — frequently asked
What is S20432 used for?
S20432 is typically used for structural sheet, railings and automotive trim. In short: cost-lean 201-family sheet; good draw, high springback; indoor or coated service.
What is the yield strength of S20432?
S20432 has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 50% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.
Is S20432 easy to machine?
Not especially — machinability is rated fair (42/100, better than 79% of stainless steel grades). Work-hardens fast and runs gummy — use rigid setups, sharp positive-rake carbide, heavy constant feed, no dwelling, and flood coolant; expect ~45 % of AISI 1212 rates.
Can S20432 be welded?
Yes — weldability is rated very good (70/100). Weldable by GTAW/GMAW/resistance spot with 308L or 307/Cr-Mn fillers; keep heat input low, no preheat, back-purge for appearance, and avoid sensitising holds if the higher-carbon variant is used.
What surface finishes work on S20432?
Takes No.4 brushed and mirror polish well and accepts PVD colour coating; passivate after fabrication and expect earlier rust staining than 304 outdoors — do not anodize.
Can S20432 be formed, bent or molded?
Excellent stretch/deep-draw behaviour in the annealed temper but high springback and forming loads; allow ~15–25 % more press tonnage than 304 and use interstage anneals for severe multi-stage draws.
What is the maximum service temperature of S20432?
S20432 is rated for continuous use to about 760°C (1,400 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does S20432 cost?
S20432 is a standard-cost stainless steel ($$), cheaper than about 71% 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 A666 — Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip — ASTM International (2023)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (Cr-Mn austenitic stainless) — ASM International (1990)
- Low-nickel Cr-Mn austenitic (201 / 204Cu-type) stainless sheet datasheets — Outokumpu / Jindal Stainless / Chinese mills (2023)
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.