Stainless Steel S44625-CD (Cold drawn)
Supply condition
UNS S44625
Bar stock with tighter tolerance and higher strength for machined fittings, valve trim and fasteners.
Values for the CD condition
Other S44625 tempers and conditions
S44625 is listed in 3 conditions; see the grade overview at S44625.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As-welded deposit | Represents joint properties when post-weld annealing is impossible; expect coarse HAZ grains and much lower notch toughness. | 370 | 490 | 15 | 185 HB | 2.9 % IACS |
ANNDefault Annealed | Standard supply condition for all product forms; best combination of corrosion resistance, ductility and formability. | 380 | 500 | 28 | 175 HB | 2.9 % IACS |
CDThis page Cold drawn | Bar stock with tighter tolerance and higher strength for machined fittings, valve trim and fasteners. | 500 | 600 | 16 | 210 HB | 2.9 % IACS |
What is S44625-CD?
S44625-CD is S44625 supplied in the CD condition — bar stock with tighter tolerance and higher strength for machined fittings, valve trim and fasteners. S44625-CD has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 77% of stainless steel grades. Elongation at break is 16% and the elastic modulus is 200 GPa (29 Msi). S44625-CD has a density of 7.67 g/cm³ (0.277 lb/in³), lighter than 95% of stainless steel grades. It melts at 1,450°C (2,642 °F). ANN is the default condition FabDigit quotes; CD is available on request or by drawing note.
Advantages
- Easy to machine — 52/100, better than 91% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
- High strength — 500 MPa (72.5 ksi), better than 77% of stainless steel grades
- Conducts heat well — 20.5 W/m·K (11.8 BTU/hr·ft·°F), better than 75% of stainless steel grades
Limitations
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
- Limited ductility — 16%, worse than 88% of stainless steel grades
- Difficult to weld — 50/100, worse than 77% of stainless steel grades
S44625-CD properties
Typical room-temperature values for S44625-CD; 21 are specific to this condition. Other listed values are S44625 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S44625-CD has a density of 7.67 g/cm³ (0.277 lb/in³), lighter than 95% of stainless steel grades. It melts at 1,450°C (2,642 °F).
Mechanical15
S44625-CD has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 77% of stainless steel grades. Elongation at break is 16% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S44625-CD is rated for continuous service to 300°C (572 °F). It conducts heat at 20.5 W/m·K (11.8 BTU/hr·ft·°F), better than 75% of stainless steel grades. Thermal expansion is 9.9 µm/m·K (5.5 µin/in·°F).
Electrical3
S44625-CD conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 73% of stainless steel grades.
Sustainability4
Producing a kilogram of S44625-CD takes about 55 MJ of energy and emits 3.6 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 45%.
Manufacturability7
S44625-CD's machinability is fair (52/100, better than 91% of stainless steel grades); weldability fair (50/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S44625-CD
Is S44625 easy to machine?
Machines like a gummy ferritic — use rigid setups, sharp positive-rake carbide, heavy feeds and generous coolant; expect ~half the rate of 12L14.
Can S44625 be welded?
Autogenous GTAW/plasma or matching low-interstitial filler with very low heat input and rigorous Ar shielding/backing; grain growth and interstitial pickup in the HAZ are the main risks — no preheat, keep interpass low.
Can S44625 be formed, bent or molded?
Cold forms and roll-forms adequately in thin gauge with generous bend radii (≥1t) and allowance for springback; avoid severe deep drawing and forming below ~15 °C.
What surface finishes work on S44625?
Passivate per ASTM A967 (nitric or citric) or electropolish after pickling; not anodizable, and the ferritic structure takes a good but slightly duller polish than austenitics.
S44625 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 |
|---|---|---|
| Cr | 25 – 27.5 | 26 |
| Mo | 0.75 – 1.5 | 1 |
| Ni | ≤ 0.5 | 0.15 |
| Tistabilizer, typically ≥7×(C+N) | 0.05 – 0.4 | 0.2 |
| Clow-interstitial melt | ≤ 0.01 | 0.01 |
| NC+N generally ≤0.025 % | ≤ 0.02 | 0.01 |
| Mn | ≤ 0.4 | 0.25 |
| Si | ≤ 0.4 | 0.3 |
| Cu | ≤ 0.2 | 0.05 |
| P | ≤ 0.02 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Fe | balance | — |
S44625-CD — frequently asked
What is S44625-CD used for?
S44625-CD is typically used for heat exchangers, brine handling equipment and chemical process tubing. In short: 26Cr-1Mo chloride-resistant ferritic; lower-cost E-Brite alternative; thin-gauge tubing grade.
What is the yield strength of S44625-CD?
S44625-CD has a typical yield strength of 500 MPa (72.5 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 77% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is S44625-CD easy to machine?
Reasonably — machinability is rated fair (52/100, better than 91% of stainless steel grades). Machines like a gummy ferritic — use rigid setups, sharp positive-rake carbide, heavy feeds and generous coolant; expect ~half the rate of 12L14.
Can S44625-CD be welded?
With care — weldability is rated fair (50/100). Autogenous GTAW/plasma or matching low-interstitial filler with very low heat input and rigorous Ar shielding/backing; grain growth and interstitial pickup in the HAZ are the main risks — no preheat, keep interpass low.
What surface finishes work on S44625-CD?
Passivate per ASTM A967 (nitric or citric) or electropolish after pickling; not anodizable, and the ferritic structure takes a good but slightly duller polish than austenitics.
Can S44625-CD be formed, bent or molded?
Cold forms and roll-forms adequately in thin gauge with generous bend radii (≥1t) and allowance for springback; avoid severe deep drawing and forming below ~15 °C.
What is the maximum service temperature of S44625-CD?
S44625-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 S44625-ANN and S44625-CD?
ANN is the default condition — standard supply condition for all product forms; best combination of corrosion resistance, ductility and formability. CD: bar stock with tighter tolerance and higher strength for machined fittings, valve trim and fasteners. Yield strength is 380 MPa in ANN versus 500 MPa in CD.
Sources
- ASTM A268/A268M — Seamless and Welded Ferritic Stainless Steel Tubing — ASTM International (2022)
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip — ASTM International (2023)
- Metals and Alloys in the Unified Numbering System (UNS), 13th ed. — SAE/ASTM (2017)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- 26Cr-1Mo super-ferritic stainless tubing data (26-1 family) — Specialty stainless producers (2020)
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.