Stainless Steel 1.4537-CD (Cold drawn)
Supply condition
EN 1.4537 · UNS N08935 · also Alloy 32
Bar stock for pump shafts, fasteners and valve stems needing higher yield strength and tight tolerance.
Values for the CD condition
Other 1.4537 tempers and conditions
1.4537 is listed in 6 conditions; see the grade overview at 1.4537.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Forged + solution annealed (flanges, valve bodies, fittings) | Heavy forged sections for valves, pump casings and flanges; check through-thickness annealing quality. | 335 | 680 | 42 | 180 HB | 1.7 % IACS |
Hot rolled + solution annealed plate | Heavy plate for pressure vessels, scrubbers and acid tanks; same metallurgy as AT with hot-rolled/pickled surface. | 340 | 690 | 45 | 180 HB | 1.7 % IACS |
ATDefault Solution annealed and quenched (1100–1150 °C, water quenched), pickled | Standard supply condition for plate, sheet, tube and forgings — maximum corrosion resistance and ductility. | 350 | 700 | 45 | 185 HB | — |
Cold rolled + annealed sheet, 2B finish | Thin sheet/strip for linings, bellows and heat-exchanger plates where a smooth bright surface is needed. | 360 | 720 | 43 | 190 HB | 1.7 % IACS |
As-welded deposit | Fabricated joints without post-weld solution anneal — expect somewhat lower pitting resistance in the weld metal unless Ni-base filler is used. | 380 | 670 | 32 | 200 HB | 1.6 % IACS |
CDThis page Cold drawn | Bar stock for pump shafts, fasteners and valve stems needing higher yield strength and tight tolerance. | 560 | 820 | 25 | 24 HRC | 1.7 % IACS |
What is 1.4537-CD?
1.4537-CD is 1.4537 supplied in the CD condition — bar stock for pump shafts, fasteners and valve stems needing higher yield strength and tight tolerance. 1.4537-CD has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 85% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 195 GPa (28.3 Msi). 1.4537-CD has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,320°C (2,408 °F). AT is the default condition FabDigit quotes; CD is available on request or by drawing note.
Advantages
- Good corrosion resistance — 86/100, better than 94% of stainless steel grades
- High strength — 560 MPa (81.2 ksi), better than 85% 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
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
- High embodied carbon — 5.6 kg CO₂/kg, worse than 83% of stainless steel grades
1.4537-CD properties
Typical room-temperature values for 1.4537-CD; 23 are specific to this condition. Other listed values are 1.4537 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4537-CD has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,320°C (2,408 °F).
Mechanical14
1.4537-CD has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 85% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal5
1.4537-CD is rated for continuous service to 300°C (572 °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
1.4537-CD conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (86/100), better than 94% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4537-CD takes about 62 MJ of energy and emits 5.6 kg of CO₂ — more than 75% of stainless steel grades. Typical recycled content is 40%.
Manufacturability7
1.4537-CD's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability good (65/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4537-CD
Is 1.4537 easy to machine?
Very gummy and strongly work hardening — use rigid setups, positive-rake sharp carbide/coated inserts, heavy feed with low-to-moderate speed (≈30–60 m/min turning), high-pressure coolant, and never dwell in the cut.
Can 1.4537 be welded?
GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3/-4 or ERNiCrMo-13) to avoid Mo segregation; keep interpass ≤100–150 °C, no preheat, low heat input, back-purge with Ar (+N2) and pickle/passivate after welding.
Can 1.4537 be formed, bent or molded?
Cold forms well but needs ≈50 % more force than 304 and generous springback allowance; hot work 1150–1200 °C followed by mandatory solution anneal 1100–1150 °C with rapid water quench.
What surface finishes work on 1.4537?
Pickle in HNO3-HF and passivate (ASTM A967) after hot work or welding; electropolishing gives the best surface for acid and pharma service — no anodizing applies.
1.4537 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 for weld corrosion resistance | ≤ 0.02 | 0.02 |
| Si | ≤ 0.7 | 0.35 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.01 | 0 |
| Cr | 24 – 26 | 25 |
| Nistabilises austenite, resists SCC | 24 – 27 | 25 |
| Mo | 4.7 – 5.7 | 5.2 |
| Cuboosts sulfuric/phosphoric acid resistance | 1 – 2 | 1.5 |
| Nraises PREN and yield strength | 0.17 – 0.25 | 0.2 |
| Fe | balance | — |
1.4537-CD — frequently asked
What is 1.4537-CD used for?
1.4537-CD is typically used for sulfuric acid coolers, phosphoric acid production, seawater desalination and chemical reactor vessels. In short: pitting resistance above 904L; hot sulfuric acid grade; needs Ni-base weld filler.
What is the yield strength of 1.4537-CD?
1.4537-CD has a typical yield strength of 560 MPa (81.2 ksi) and a tensile strength of 820 MPa (119 ksi) — stronger than 85% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is 1.4537-CD easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Very gummy and strongly work hardening — use rigid setups, positive-rake sharp carbide/coated inserts, heavy feed with low-to-moderate speed (≈30–60 m/min turning), high-pressure coolant, and never dwell in the cut.
Can 1.4537-CD be welded?
Yes — weldability is rated good (65/100). GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3/-4 or ERNiCrMo-13) to avoid Mo segregation; keep interpass ≤100–150 °C, no preheat, low heat input, back-purge with Ar (+N2) and pickle/passivate after welding.
What surface finishes work on 1.4537-CD?
Pickle in HNO3-HF and passivate (ASTM A967) after hot work or welding; electropolishing gives the best surface for acid and pharma service — no anodizing applies.
Can 1.4537-CD be formed, bent or molded?
Cold forms well but needs ≈50 % more force than 304 and generous springback allowance; hot work 1150–1200 °C followed by mandatory solution anneal 1100–1150 °C with rapid water quench.
What is the maximum service temperature of 1.4537-CD?
1.4537-CD is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4537-AT and 1.4537-CD?
AT is the default condition — standard supply condition for plate, sheet, tube and forgings — maximum corrosion resistance and ductility. CD: bar stock for pump shafts, fasteners and valve stems needing higher yield strength and tight tolerance. Yield strength is 350 MPa in AT versus 560 MPa in CD.
Sources
- EN 10088-1/-2 Stainless steels — list of grades, technical delivery conditions for sheet/plate — CEN (2014)
- ASTM A240 / A480 (UNS N08935 superaustenitic plate, sheet and strip) — ASTM International (2022)
- UR™ B66 / Alloy 32 superaustenitic stainless steel data sheet — Industeel (ArcelorMittal) (2020)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
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.