Stainless Steel S30441 1/4H
Supply condition
UNS S30441
1/4H = quarter hard
Light cold work for springy sheet/strip that must still be bent and formed.
Values for the 1/4H condition
Other S30441 tempers and conditions
S30441 is listed in 7 conditions; see the grade overview at S30441.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
weld metal / HAZ, no post-weld solution treatment | Reference condition for fabricated assemblies that cannot be re-solution annealed. | 380 | 660 | 35 | 190 HB | 2.3 % IACS |
AnnealedDefault solution annealed (1040–1120 °C, water quenched) | Standard stocked condition for plate, sheet, bar and tube; maximum ductility and corrosion resistance. | 390 | 700 | 48 | 195 HB | — |
1/4HThis page Quarter hard | Light cold work for springy sheet/strip that must still be bent and formed. | 590 | 900 | 14 | 26 HRC | 2.3 % IACS |
Cold drawn | Choose for straight, close-tolerance bar with a modest strength boost over annealed. | 620 | 820 | 25 | 24 HRC | 2.3 % IACS |
Half hard | Structural strip/sheet where high yield strength matters more than bendability. | 830 | 1,080 | 9 | 33 HRC | 2.3 % IACS |
Three-quarter hard | Near-maximum strength strip for flat springs, clamps and shims. | 1,000 | 1,240 | 5 | 37 HRC | 2.3 % IACS |
Full hard | Maximum as-rolled strength; forming limited to very large-radius bends. | 1,030 | 1,320 | 4 | 41 HRC | 2.3 % IACS |
What is S30441 1/4H?
S30441 1/4H is S30441 supplied in the 1/4H condition — light cold work for springy sheet/strip that must still be bent and formed. S30441 1/4H has a yield strength of 590 MPa (85.6 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 14% and the elastic modulus is 195 GPa (28.3 Msi). S30441 1/4H has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F). Annealed is the default condition FabDigit quotes; 1/4H is available on request or by drawing note.
Advantages
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
- High strength — 590 MPa (85.6 ksi), better than 86% of stainless steel grades
Limitations
- Limited ductility — 14%, worse than 91% of stainless steel grades
S30441 1/4H properties
Typical room-temperature values for S30441 1/4H; 24 are specific to this condition. Other listed values are S30441 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S30441 1/4H has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical16
S30441 1/4H has a yield strength of 590 MPa (85.6 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 14% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
S30441 1/4H is rated for continuous service to 425°C (797 °F). It conducts heat at 15.5 W/m·K (8.96 BTU/hr·ft·°F), better than 53% of stainless steel grades. Thermal expansion is 16.6 µm/m·K (9.22 µin/in·°F).
Electrical3
S30441 1/4H conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of S30441 1/4H takes about 53 MJ of energy and emits 5.2 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 65%.
Manufacturability8
S30441 1/4H's machinability is poor (33/100, worse than 57% of stainless steel grades); weldability very good (72/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S30441 1/4H
Is S30441 easy to machine?
Gummy and strongly work-hardening — use rigid setups, positive-rake coated carbide, heavy feeds, low-to-moderate speeds and flood coolant; never dwell or rub.
Can S30441 be welded?
Readily welded by GTAW/GMAW/SMAW with 308H (or 308L for corrosive service) filler, no preheat, low interpass temperature and no PWHT; nitrogen loss in the arc slightly softens the weld metal.
Can S30441 be formed, bent or molded?
Cold forms well but with higher forming loads and springback than 304; anneal between severe draws and allow generous bend radii for hard tempers.
What surface finishes work on S30441?
Pickle/passivate per ASTM A380/A967 after hot work or welding; takes 2B, BA, No.4 and mirror polish finishes well — electropolishing gives the best corrosion performance.
S30441 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 |
|---|---|---|
| Chigh-carbon (H) range for elevated-temperature strength | 0.04 – 0.1 | 0.07 |
| Mn | ≤ 2 | 1.5 |
| Si | ≤ 0.75 | 0.5 |
| P | ≤ 0.05 | — |
| S | ≤ 0.03 | — |
| Cr | 18 – 20 | 19 |
| Ni | 8 – 10.5 | 9 |
| Nprincipal solid-solution strengthener | 0.16 – 0.3 | 0.22 |
| Fe | balance | — |
S30441 1/4H — frequently asked
What is S30441 1/4H used for?
S30441 1/4H is typically used for pressure vessels and shells, structural members needing more strength than 304, cryogenic and process tank sections, piping and flanges for steam service, fasteners and shafts and formed sheet-metal frames and brackets. In short: stronger than standard 304; nitrogen-strengthened austenitic; 304-level corrosion resistance.
What is the yield strength of S30441 1/4H?
S30441 1/4H has a typical yield strength of 590 MPa (85.6 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 86% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.
Is S30441 1/4H easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, positive-rake coated carbide, heavy feeds, low-to-moderate speeds and flood coolant; never dwell or rub.
Can S30441 1/4H be welded?
Yes — weldability is rated very good (72/100). Readily welded by GTAW/GMAW/SMAW with 308H (or 308L for corrosive service) filler, no preheat, low interpass temperature and no PWHT; nitrogen loss in the arc slightly softens the weld metal.
What surface finishes work on S30441 1/4H?
Pickle/passivate per ASTM A380/A967 after hot work or welding; takes 2B, BA, No.4 and mirror polish finishes well — electropolishing gives the best corrosion performance.
Can S30441 1/4H be formed, bent or molded?
Cold forms well but with higher forming loads and springback than 304; anneal between severe draws and allow generous bend radii for hard tempers.
What is the maximum service temperature of S30441 1/4H?
S30441 1/4H is rated for continuous use to about 425°C (797 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S30441 Annealed and S30441-FH?
Annealed is the default condition — standard stocked condition for plate, sheet, bar and tube; maximum ductility and corrosion resistance. FH: maximum as-rolled strength; forming limited to very large-radius bends. Yield strength is 390 MPa in Annealed versus 1,030 MPa in FH.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip — ASTM International (2023)
- ASTM A666 — Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- ASME BPVC Section II Part D — Properties (Metric) — ASME (2023)
- 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)
- SAE/ASTM Unified Numbering System for Metals and Alloys (UNS) — SAE International / 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.