Stainless Steel N08925-CDA
Supply condition
UNS N08925 · ASTM A240/B625
CDA = cold drawn and solution annealed bar
Bright bar for pump shafts, valve stems and machined fittings where annealed corrosion resistance is required.
Values for the CDA condition
Other N08925 tempers and conditions
N08925 is listed in 5 conditions; see the grade overview at N08925.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Forged and solution annealed | For valve bodies, flanges and heavy fittings ordered to B564/B366-type requirements. | 335 | 680 | 45 | 185 HB | 1.8 % IACS |
SADefault Solution annealed | Standard supply condition for plate, sheet, tube, bar and fittings; maximum corrosion resistance and ductility. | 340 | 690 | 48 | 180 HB | 1.8 % IACS |
As-welded deposit | Property reference for welded fabrications; use ERNiCrMo-3/-4 filler to avoid Mo depletion in the weld metal. | 350 | 660 | 35 | 190 HB | 1.7 % IACS |
CDAThis page Cold drawn and solution annealed bar | Bright bar for pump shafts, valve stems and machined fittings where annealed corrosion resistance is required. | 360 | 700 | 45 | 190 HB | 1.8 % IACS |
Cold worked | Choose when higher yield strength is needed in tubing, fasteners or springs; slightly reduced ductility and toughness. | 600 | 850 | 30 | 25 HRC | 1.8 % IACS |
What is N08925-CDA?
N08925-CDA is N08925 supplied in the CDA condition — bright bar for pump shafts, valve stems and machined fittings where annealed corrosion resistance is required. N08925-CDA has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 700 MPa (102 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi). N08925-CDA has a density of 8.1 g/cm³ (0.293 lb/in³), heavier than 99% of stainless steel grades. It melts at 1,320°C (2,408 °F). SA is the default condition FabDigit quotes; CDA is available on request or by drawing note.
Advantages
- Good corrosion resistance — 85/100, better than 92% of stainless steel grades
- Tough — resists crack growth — 195 MPa·√m (177.5 ksi·√in), better than 77% 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
- High embodied carbon — 6.5 kg CO₂/kg, worse than 93% of stainless steel grades
- Low electrical conductivity — 1.8 % IACS, worse than 87% of stainless steel grades
- Limited service temperature — 400°C (752 °F), worse than 78% of stainless steel grades
N08925-CDA properties
Typical room-temperature values for N08925-CDA; 22 are specific to this condition. Other listed values are N08925 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
N08925-CDA has a density of 8.1 g/cm³ (0.293 lb/in³), heavier than 99% of stainless steel grades. It melts at 1,320°C (2,408 °F).
Mechanical16
N08925-CDA has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 700 MPa (102 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal5
N08925-CDA is rated for continuous service to 400°C (752 °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 15.5 µm/m·K (8.61 µin/in·°F).
Electrical3
N08925-CDA conducts electricity at 1.8 % IACS, worse than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 92% of stainless steel grades.
Sustainability4
Producing a kilogram of N08925-CDA takes about 80 MJ of energy and emits 6.5 kg of CO₂ — more than 89% of stainless steel grades. Typical recycled content is 35%.
Manufacturability6
N08925-CDA's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (70/100); formability good (55/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with N08925-CDA
Is N08925 easy to machine?
Work-hardens rapidly and runs gummy: use rigid setups, positive-rake carbide, low speed with heavy feed, continuous cut and copious high-pressure coolant.
Can N08925 be welded?
GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3 or -4); no preheat, low heat input, interpass <150 °C, no PWHT — autogenous welds lose Mo and pitting resistance.
Can N08925 be formed, bent or molded?
Cold forms well but needs ~50 % higher press loads than 316L and generous springback allowance; hot work 1150–900 °C followed by solution anneal and water quench.
What surface finishes work on N08925?
Pickle and passivate after hot work or welding to restore the passive film; grinds and polishes to a bright finish, no anodizing (n/a for stainless).
N08925 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 to preserve intergranular resistance | ≤ 0.02 | 0.01 |
| Si | ≤ 0.5 | 0.3 |
| Mn | ≤ 1 | 0.6 |
| P | ≤ 0.05 | 0.02 |
| S | ≤ 0.03 | 0 |
| Cr | 19 – 21 | 20 |
| Ni | 24 – 26 | 25 |
| Mo | 6 – 7 | 6.5 |
| Cuimproves resistance in sulphuric/phosphoric acid | 0.8 – 1.5 | 1 |
| Nsolid-solution strengthening, raises PREN | 0.1 – 0.2 | 0.15 |
| Fe | balance | — |
N08925-CDA — frequently asked
What is N08925-CDA used for?
N08925-CDA is typically used for seawater handling systems, flue-gas desulfurization, chemical process piping and pulp and paper bleach plants. In short: 6Mo chloride pitting resistance; stronger than 904L; nitrogen-strengthened superaustenitic.
What is the yield strength of N08925-CDA?
N08925-CDA has a typical yield strength of 360 MPa (52.2 ksi) and a tensile strength of 700 MPa (102 ksi) — weaker than 51% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is N08925-CDA easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Work-hardens rapidly and runs gummy: use rigid setups, positive-rake carbide, low speed with heavy feed, continuous cut and copious high-pressure coolant.
Can N08925-CDA be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3 or -4); no preheat, low heat input, interpass <150 °C, no PWHT — autogenous welds lose Mo and pitting resistance.
What surface finishes work on N08925-CDA?
Pickle and passivate after hot work or welding to restore the passive film; grinds and polishes to a bright finish, no anodizing (n/a for stainless).
Can N08925-CDA be formed, bent or molded?
Cold forms well but needs ~50 % higher press loads than 316L and generous springback allowance; hot work 1150–900 °C followed by solution anneal and water quench.
What is the maximum service temperature of N08925-CDA?
N08925-CDA is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between N08925-SA and N08925-CW?
SA is the default condition — standard supply condition for plate, sheet, tube, bar and fittings; maximum corrosion resistance and ductility. CW: choose when higher yield strength is needed in tubing, fasteners or springs; slightly reduced ductility and toughness. Yield strength is 340 MPa in SA versus 600 MPa in CW.
Sources
- ASTM A240/A240M – Cr and Cr-Ni stainless plate, sheet and strip — ASTM International (2023)
- ASTM B625 – UNS N08925/N08926 plate, sheet and strip — ASTM International (2021)
- ASTM B649 / B673 / B677 – N08925 bar and tube — ASTM International (2021)
- AL 25-6MO / Alloy 926 (1.4529) alloy datasheet — ATI / VDM Metals (2020)
- ASM Handbook Vol.1 – Properties of Stainless Steels — ASM International (1990)
- EN 10088-2 / X1NiCrMoCu25-20-7 (1.4529) — CEN (2014)
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.