Stainless Steel SUS890L Annealed
Temper · default condition
JIS SUS890L · UNS S31254
Standard stocked condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility.
Values for the Annealed condition
Other SUS890L tempers and conditions
SUS890L is listed in 3 conditions; see the grade overview at SUS890L.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefaultThis page Annealed (solution treated ~1100–1150 °C, water quenched) | Standard stocked condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility. | 260 | 590 | 45 | 160 HB | 1.7 % IACS |
Quarter hard | Light cold work when higher yield strength is needed but some forming ductility must remain. | 520 | 760 | 22 | 22 HRC | 1.7 % IACS |
Half hard | Higher-strength strip/wire for springs, clamps and stressed components in corrosive service. | 700 | 900 | 14 | 28 HRC | 1.7 % IACS |
What is SUS890L Annealed?
SUS890L Annealed is SUS890L in the Annealed temper — standard stocked condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility. SUS890L Annealed has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 590 MPa (85.6 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi). SUS890L Annealed has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,320°C (2,408 °F).
Advantages
- Good corrosion resistance — 86/100, better than 94% of stainless steel grades
- Tough — resists crack growth — 200 MPa·√m (182 ksi·√in), better than 86% of stainless steel grades
- Forms and bends easily — 72/100, better than 84% of stainless steel grades
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- Poor heat conductor — 12 W/m·K (6.93 BTU/hr·ft·°F), worse than 93% of stainless steel grades
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- Low strength — 260 MPa (37.7 ksi), worse than 84% of stainless steel grades
- High embodied carbon — 5.6 kg CO₂/kg, worse than 83% of stainless steel grades
- Limited service temperature — 400°C (752 °F), worse than 78% of stainless steel grades
SUS890L Annealed properties
Typical room-temperature values for SUS890L Annealed; 23 are specific to this condition. Other listed values are SUS890L reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
SUS890L Annealed has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,320°C (2,408 °F).
Mechanical16
SUS890L Annealed has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 590 MPa (85.6 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
SUS890L Annealed is rated for continuous service to 400°C (752 °F). It conducts heat at 12 W/m·K (6.93 BTU/hr·ft·°F), worse than 93% of stainless steel grades. Thermal expansion is 15.3 µm/m·K (8.5 µin/in·°F).
Electrical3
SUS890L Annealed conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (86/100), better than 94% of stainless steel grades.
Sustainability4
Producing a kilogram of SUS890L Annealed takes about 68 MJ of energy and emits 5.6 kg of CO₂ — more than 80% of stainless steel grades. Typical recycled content is 45%.
Manufacturability8
SUS890L Annealed's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (75/100); formability very good (72/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with SUS890L Annealed
Is SUS890L easy to machine?
Tough and gummy with strong work hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speed and copious high-lubricity coolant; never dwell in the cut.
Can SUS890L be welded?
Readily welded by GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3 / Alloy 625) to avoid Mo segregation; low heat input, no preheat, interpass < 150 °C, pickle and passivate afterwards.
Can SUS890L be formed, bent or molded?
Very ductile but requires ~50 % higher forming loads than 304; allow generous springback, avoid excessive cold work before highly corrosive service or re-anneal at 1100–1150 °C with rapid quench.
What surface finishes work on SUS890L?
Pickle (HNO₃/HF) or bead-blast then passivate per ASTM A967; electropolishing gives the smoothest, most corrosion-resistant surface for pharma and acid-handling equipment.
SUS890L 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 weld corrosion resistance | ≤ 0.02 | 0.02 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 2 | 1.5 |
| P | ≤ 0.05 | 0.03 |
| S | ≤ 0.04 | 0 |
| Ni | 23 – 28 | 25 |
| Cr | 19 – 23 | 21 |
| Mo | 4 – 5 | 4.5 |
| Cuimproves resistance in reducing acids | 1 – 2 | 1.5 |
| Fe | balance | — |
SUS890L Annealed — frequently asked
What is SUS890L Annealed used for?
SUS890L Annealed is typically used for acid processing equipment, marine components and flue-gas desulfurization. In short: 904L-equivalent acid grade; high Ni-Mo corrosion resistance; costly, hard to machine.
What is the yield strength of SUS890L Annealed?
SUS890L Annealed has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 590 MPa (85.6 ksi) — weaker than 84% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is SUS890L Annealed easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Tough and gummy with strong work hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speed and copious high-lubricity coolant; never dwell in the cut.
Can SUS890L Annealed be welded?
Yes — weldability is rated very good (75/100). Readily welded by GTAW/GMAW/SMAW with over-alloyed Ni-base filler (ERNiCrMo-3 / Alloy 625) to avoid Mo segregation; low heat input, no preheat, interpass < 150 °C, pickle and passivate afterwards.
What surface finishes work on SUS890L Annealed?
Pickle (HNO₃/HF) or bead-blast then passivate per ASTM A967; electropolishing gives the smoothest, most corrosion-resistant surface for pharma and acid-handling equipment.
Can SUS890L Annealed be formed, bent or molded?
Very ductile but requires ~50 % higher forming loads than 304; allow generous springback, avoid excessive cold work before highly corrosive service or re-anneal at 1100–1150 °C with rapid quench.
What is the maximum service temperature of SUS890L Annealed?
SUS890L Annealed 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.
Sources
- JIS G 4304 / G 4305 — Hot and cold rolled stainless steel plate, sheet and strip — JSA (2021)
- ASTM B625 / ASME SB-625 — UNS N08904 plate, sheet and strip — ASTM (2020)
- Outokumpu 904L (EN 1.4539) datasheet — Outokumpu (2023)
- Sandvik 2RK65 / Alleima 904L tube datasheet — Alleima (Sandvik Materials Technology) (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
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.