Stainless Steel S41050 Annealed
Temper · default condition
UNS S41050 · EN 1.4030
Standard stocked condition for plate, sheet and welded/seamless tube; maximum ductility for forming and welding.
Values for the Annealed condition
Other S41050 tempers and conditions
S41050 is listed in 4 conditions; see the grade overview at S41050.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefaultThis page softened (approx. 780–850 °C, air/furnace cool) | Standard stocked condition for plate, sheet and welded/seamless tube; maximum ductility for forming and welding. | 360 | 540 | 28 | 160 HB | — |
Cold drawn | Use when higher strength, tighter tolerance and better surface finish are needed without heat treatment. | 570 | 700 | 15 | 220 HB | — |
Q&T | Best strength/toughness balance for shafts, valve internals and turbine parts; tempered soft martensite. | 620 | 760 | 18 | 24 HRC | — |
Q&T | Pick for maximum hardness/wear of this low-carbon grade; hardness is capped by the ≤0.04 % C content. | 760 | 950 | 14 | 31 HRC | — |
What is S41050 Annealed?
S41050 Annealed is S41050 in the Annealed temper — standard stocked condition for plate, sheet and welded/seamless tube; maximum ductility for forming and welding. S41050 Annealed has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi). S41050 Annealed has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,480°C (2,696 °F).
Advantages
- High electrical conductivity — 3 % IACS, better than 95% of stainless steel grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% of stainless steel grades
- Easy to machine — 50/100, better than 90% of stainless steel grades
- Conducts heat well — 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades
Limitations
- Needs corrosion protection — 42/100, worse than 90% of stainless steel grades
S41050 Annealed properties
Typical room-temperature values for S41050 Annealed; 14 are specific to this condition. Other listed values are S41050 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S41050 Annealed has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,480°C (2,696 °F).
Mechanical14
S41050 Annealed has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S41050 Annealed is rated for continuous service to 600°C (1,112 °F). It conducts heat at 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
S41050 Annealed conducts electricity at 3 % IACS, better than 95% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 90% of stainless steel grades.
Sustainability4
Producing a kilogram of S41050 Annealed takes about 42 MJ of energy and emits 3.2 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 65%.
Manufacturability8
S41050 Annealed's machinability is fair (50/100, better than 90% of stainless steel grades); weldability very good (70/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S41050 Annealed
Is S41050 easy to machine?
Machines like annealed 410 (~55 % of AISI 1212): use rigid setups, sharp positive-rake carbide, moderate speed and heavy feed to avoid work-hardened glazing; stringy chips in the low-C annealed state.
Can S41050 be welded?
Readily welded by GTAW/GMAW with 410NiMo or austenitic 309L filler; low carbon limits HAZ hardening, but preheat 100–200 °C and post-weld temper 650–700 °C are advised on thick sections.
Can S41050 be formed, bent or molded?
Annealed sheet and tube cold-bend and expand well for tube-to-tubesheet joints; springback is higher than 304 and severe draws should be interstage-annealed.
What surface finishes work on S41050?
Passivate per ASTM A967 (nitric or citric) or electropolish after pickling; takes a good mechanical polish but the 12 % Cr film needs paint or coating for outdoor/chloride exposure.
S41050 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 toughness/weldability | ≤ 0.04 | 0.02 |
| Mn | ≤ 1 | 0.6 |
| Si | ≤ 1 | 0.4 |
| P | ≤ 0.05 | — |
| S | ≤ 0.03 | — |
| Cr | 10.5 – 12.5 | 11.5 |
| Niaustenite stabiliser, toughness | 0.6 – 1.1 | 0.85 |
| Nstrengthening / ferrite control | ≤ 0.1 | 0.04 |
| Fe | balance | — |
S41050 Annealed — frequently asked
What is S41050 Annealed used for?
S41050 Annealed is typically used for fasteners, cutlery-adjacent components and general corrosion-resistant parts. In short: EN 1.4030 cross-reference; cold-workable 410 family; heat-treatable to two strength levels.
What is the yield strength of S41050 Annealed?
S41050 Annealed has a typical yield strength of 360 MPa (52.2 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 51% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S41050 Annealed easy to machine?
Reasonably — machinability is rated fair (50/100, better than 90% of stainless steel grades). Machines like annealed 410 (~55 % of AISI 1212): use rigid setups, sharp positive-rake carbide, moderate speed and heavy feed to avoid work-hardened glazing; stringy chips in the low-C annealed state.
Can S41050 Annealed be welded?
Yes — weldability is rated very good (70/100). Readily welded by GTAW/GMAW with 410NiMo or austenitic 309L filler; low carbon limits HAZ hardening, but preheat 100–200 °C and post-weld temper 650–700 °C are advised on thick sections.
What surface finishes work on S41050 Annealed?
Passivate per ASTM A967 (nitric or citric) or electropolish after pickling; takes a good mechanical polish but the 12 % Cr film needs paint or coating for outdoor/chloride exposure.
Can S41050 Annealed be formed, bent or molded?
Annealed sheet and tube cold-bend and expand well for tube-to-tubesheet joints; springback is higher than 304 and severe draws should be interstage-annealed.
What is the maximum service temperature of S41050 Annealed?
S41050 Annealed is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S41050 Annealed and S41050 QT-Low?
Annealed is the default condition — standard stocked condition for plate, sheet and welded/seamless tube; maximum ductility for forming and welding. QT-Low: pick for maximum hardness/wear of this low-carbon grade; hardness is capped by the ≤0.04 % C content. Yield strength is 360 MPa in Annealed versus 760 MPa in QT-Low.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip — ASTM International (2023)
- ASTM A803/A803M — Welded Ferritic Stainless Steel Feedwater Heater Tubes — ASTM International (2021)
- ASTM A268/A268M — Seamless and Welded Ferritic/Martensitic Stainless Steel Tubing — ASTM International (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- UNS S41050 / SAE-ASTM Unified Numbering System listing — SAE/ASTM (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.