Stainless Steel S44627 As Welded
Finish state
UNS S44627 · ASTM XM-27
Reference condition for fabricated joints: corrosion resistance is retained if shielding is clean, but weld-zone toughness and ductility drop sharply.
Values for the As Welded condition
Other S44627 tempers and conditions
S44627 is listed in 4 conditions; see the grade overview at S44627.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault mill annealed sheet/strip/plate (ASTM A240) | Standard stocked condition for heat-exchanger and vessel plate/sheet; maximum corrosion resistance and ductility. | 345 | 490 | 30 | 160 HB | — |
As WeldedThis page autogenous GTAW joint, no post-weld anneal | Reference condition for fabricated joints: corrosion resistance is retained if shielding is clean, but weld-zone toughness and ductility drop sharply. | 350 | 490 | 12 | 175 HB | 2.9 % IACS |
2B/BA cold rolled sheet and strip | Thin gauge for tubing stock, formed parts and linings where surface finish matters. | 355 | 500 | 30 | 165 HB | 2.9 % IACS |
cold drawn / cold finished bar | Choose for higher strength, tighter tolerance and better chip control in screw-machine parts. | 520 | 620 | 15 | 18 HRC | 2.9 % IACS |
What is S44627 As Welded?
S44627 As Welded is S44627 supplied in the As Welded condition — reference condition for fabricated joints: corrosion resistance is retained if shielding is clean, but weld-zone toughness and ductility drop sharply. S44627 As Welded has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 52% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi). S44627 As Welded 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). Annealed is the default condition FabDigit quotes; As Welded is available on request or by drawing note.
Advantages
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Low embodied carbon — 3.8 kg CO₂/kg, better than 77% of stainless steel grades
Limitations
- Limited ductility — 12%, worse than 95% of stainless steel grades
- Limited service temperature — 315°C (599 °F), worse than 85% of stainless steel grades
- Limited formability — 25/100, worse than 78% of stainless steel grades
- Difficult to weld — 50/100, worse than 77% of stainless steel grades
S44627 As Welded properties
Typical room-temperature values for S44627 As Welded; 22 are specific to this condition. Other listed values are S44627 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S44627 As Welded 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
S44627 As Welded has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 52% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S44627 As Welded is rated for continuous service to 315°C (599 °F). It conducts heat at 17.5 W/m·K (10.1 BTU/hr·ft·°F), better than 72% of stainless steel grades. Thermal expansion is 9.9 µm/m·K (5.5 µin/in·°F).
Electrical3
S44627 As Welded 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 S44627 As Welded takes about 52 MJ of energy and emits 3.8 kg of CO₂ — less than 76% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
S44627 As Welded's machinability is fair (42/100, better than 79% of stainless steel grades); weldability fair (50/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S44627 As Welded
Is S44627 easy to machine?
Machines like 26Cr ferritic stainless — gummy and abrasive at ~50 % of 1212; use rigid setups, sharp positive-rake carbide, heavy feeds and flood coolant to avoid work hardening.
Can S44627 be welded?
Autogenous GTAW or matching high-purity filler with ultra-clean argon (backing gas mandatory); any carbon, nitrogen or oxygen pickup destroys weld ductility and corrosion resistance — keep heat input low and interpass cool.
Can S44627 be formed, bent or molded?
Cold forms and deep draws reasonably in thin gauge; avoid tight bends in heavy plate and warm-form (150–250 °C) thick sections because of the near-room-temperature ductile-brittle transition.
What surface finishes work on S44627?
Pickle and passivate per ASTM A967 after hot work or welding; polishes to a bright finish, not anodizable, and paints/plates only with standard stainless surface preparation.
S44627 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 |
|---|---|---|
| CC+N ≤ 0.025 % | ≤ 0.01 | 0.01 |
| Mn | ≤ 0.4 | 0.2 |
| Si | ≤ 0.4 | 0.2 |
| P | ≤ 0.02 | 0.01 |
| S | ≤ 0.02 | 0.01 |
| Cr | 25 – 27.5 | 26 |
| Mo | 0.75 – 1.5 | 1 |
| Ni | ≤ 0.5 | 0.15 |
| Cu | ≤ 0.2 | 0.05 |
| N | ≤ 0.02 | 0.01 |
| Nbcolumbium stabilizer, ≥ 8×(C+N) | 0.05 – 0.2 | 0.1 |
| Fe | balance | — |
S44627 As Welded — frequently asked
What is S44627 As Welded used for?
S44627 As Welded is typically used for seawater heat exchangers, pulp/paper bleach plant equipment and chemical process piping. In short: high-purity 26Cr-1Mo ferritic; welds without sensitization; chloride SCC resistant.
What is the yield strength of S44627 As Welded?
S44627 As Welded has a typical yield strength of 350 MPa (50.8 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 52% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S44627 As Welded easy to machine?
Not especially — machinability is rated fair (42/100, better than 79% of stainless steel grades). Machines like 26Cr ferritic stainless — gummy and abrasive at ~50 % of 1212; use rigid setups, sharp positive-rake carbide, heavy feeds and flood coolant to avoid work hardening.
Can S44627 As Welded be welded?
With care — weldability is rated fair (50/100). Autogenous GTAW or matching high-purity filler with ultra-clean argon (backing gas mandatory); any carbon, nitrogen or oxygen pickup destroys weld ductility and corrosion resistance — keep heat input low and interpass cool.
What surface finishes work on S44627 As Welded?
Pickle and passivate per ASTM A967 after hot work or welding; polishes to a bright finish, not anodizable, and paints/plates only with standard stainless surface preparation.
Can S44627 As Welded be formed, bent or molded?
Cold forms and deep draws reasonably in thin gauge; avoid tight bends in heavy plate and warm-form (150–250 °C) thick sections because of the near-room-temperature ductile-brittle transition.
What is the maximum service temperature of S44627 As Welded?
S44627 As Welded is rated for continuous use to about 315°C (599 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
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)
- ASTM A176 / A276 / A479 — Stainless Steel Bar, Shapes and Strip — ASTM International (2022)
- 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)
- E-BRITE 26-1 (UNS S44627) alloy datasheet — ATI / Allegheny Technologies (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.