Stainless Steel S43932 ANN-2B
Heat-treated state · default condition
UNS S43932
ANN-2B = annealed, cold rolled 2B finish
Default stocked condition for exhaust and appliance stamping — softest, best formability and weldability.
Values for the ANN-2B condition
Other S43932 tempers and conditions
S43932 is listed in 4 conditions; see the grade overview at S43932.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed, cold rolled 2D (dull matte) finish | Matte-annealed sheet for severe drawing where lubricant retention matters more than gloss. | 300 | 460 | 33 | 145 HB | 2.9 % IACS |
ANN-2BDefaultThis page Annealed, cold rolled 2B finish | Default stocked condition for exhaust and appliance stamping — softest, best formability and weldability. | 310 | 470 | 32 | 150 HB | — |
Temper rolled / skin passed | Light skin pass for flatness, stiffness and suppression of stretcher strain in roll-formed parts. | 370 | 500 | 25 | 168 HB | 2.9 % IACS |
Quarter hard | Rarely stocked; use where extra springback/stiffness is needed and bending is limited to gentle radii. | 460 | 560 | 12 | 13 HRC | 2.9 % IACS |
What is S43932 ANN-2B?
S43932 ANN-2B is S43932 heat treated to ANN-2B — default stocked condition for exhaust and appliance stamping — softest, best formability and weldability. S43932 ANN-2B has a yield strength of 310 MPa (45 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 63% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi). S43932 ANN-2B has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Advantages
- Forms and bends easily — 80/100, better than 93% of stainless steel grades
- Easy to machine — 52/100, better than 91% of stainless steel grades
- Readily welded — 88/100, better than 91% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Conducts heat well — 24.5 W/m·K (14.2 BTU/hr·ft·°F), better than 85% of stainless steel grades
Limitations
- Needs corrosion protection — 46/100, worse than 82% of stainless steel grades
S43932 ANN-2B properties
Typical room-temperature values for S43932 ANN-2B; 13 are specific to this condition. Other listed values are S43932 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S43932 ANN-2B has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Mechanical15
S43932 ANN-2B has a yield strength of 310 MPa (45 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 63% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S43932 ANN-2B is rated for continuous service to 815°C (1,499 °F). It conducts heat at 24.5 W/m·K (14.2 BTU/hr·ft·°F), better than 85% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
S43932 ANN-2B conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (46/100), worse than 82% of stainless steel grades.
Sustainability4
Producing a kilogram of S43932 ANN-2B takes about 42 MJ of energy and emits 4 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
S43932 ANN-2B's machinability is fair (52/100, better than 91% of stainless steel grades); weldability excellent (88/100); formability very good (80/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S43932 ANN-2B
Is S43932 easy to machine?
Machines like 430 but slightly gummier — use sharp positive-rake carbide, rigid setup, heavy flood coolant and avoid dwelling to prevent work-hardened glaze.
Can S43932 be welded?
Excellent autogenous weldability (TIG/laser/HFI) thanks to Ti+Nb stabilization; use Ar or Ar-He (never N2-rich) shielding, low heat input to limit grain coarsening, filler ER430Nb/ER439 or 309L when joining to austenitics.
Can S43932 be formed, bent or molded?
Deep-drawable and roll-formable with low springback and no ridging/roping; allow generous bend radii (≥1t) and note lower r-value anisotropy than 409 but less stretch than 304.
What surface finishes work on S43932?
Passivate or electropolish after pickling; takes BA, No.4 and mirror finishes well and accepts aluminized/paint coatings — do not anodize.
S43932 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 |
|---|---|---|
| Cultra-low carbon | ≤ 0.03 | 0.02 |
| Mn | ≤ 1 | 0.4 |
| Si | ≤ 1 | 0.4 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.03 | 0 |
| Cr | 17 – 19 | 18 |
| Niresidual | ≤ 0.5 | 0.25 |
| N | ≤ 0.03 | 0.02 |
| Ti+NbTi+Nb ≥ 0.20 + 4(C+N); dual stabilization | 0.2 – 0.75 | 0.45 |
| Fe | balance | — |
S43932 ANN-2B — frequently asked
What is S43932 ANN-2B used for?
S43932 ANN-2B is typically used for exhaust manifolds, catalytic converter shells, mufflers and flexible exhaust tubing. In short: weld-friendly ferritic exhaust grade; no sensitization after welding; 815 °C service, no nickel.
What is the yield strength of S43932 ANN-2B?
S43932 ANN-2B has a typical yield strength of 310 MPa (45 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 63% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S43932 ANN-2B easy to machine?
Reasonably — machinability is rated fair (52/100, better than 91% of stainless steel grades). Machines like 430 but slightly gummier — use sharp positive-rake carbide, rigid setup, heavy flood coolant and avoid dwelling to prevent work-hardened glaze.
Can S43932 ANN-2B be welded?
Yes — weldability is rated excellent (88/100). Excellent autogenous weldability (TIG/laser/HFI) thanks to Ti+Nb stabilization; use Ar or Ar-He (never N2-rich) shielding, low heat input to limit grain coarsening, filler ER430Nb/ER439 or 309L when joining to austenitics.
What surface finishes work on S43932 ANN-2B?
Passivate or electropolish after pickling; takes BA, No.4 and mirror finishes well and accepts aluminized/paint coatings — do not anodize.
Can S43932 ANN-2B be formed, bent or molded?
Deep-drawable and roll-formable with low springback and no ridging/roping; allow generous bend radii (≥1t) and note lower r-value anisotropy than 409 but less stretch than 304.
What is the maximum service temperature of S43932 ANN-2B?
S43932 ANN-2B is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S43932 ANN-2B and S43932-TR?
ANN-2B is the default condition — default stocked condition for exhaust and appliance stamping — softest, best formability and weldability. TR: light skin pass for flatness, stiffness and suppression of stretcher strain in roll-formed parts. Yield strength is 310 MPa in ANN-2B versus 370 MPa in TR.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip — ASTM International (2023)
- ASTM A268/A268M — Seamless and Welded Ferritic Stainless Steel Tubing — ASTM International (2022)
- EN 10088-2 (grades 1.4509 / 1.4510 stabilized ferritics) — CEN (2014)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Type 439 / 439HP ferritic stainless steel product data — Cleveland-Cliffs (AK Steel) (2021)
- Ferritic stainless steels for automotive exhaust (1.4509/1.4510) — Outokumpu / Aperam (2022)
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.