Stainless Steel ER2553
UNS S39553
ER2553 (S39553) is a super duplex stainless bare filler wire matched to 2507 and 255 (S32550) base metals for high-strength service in chloride and acid environments.
Reference datasheet — ER2553 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the AW condition
ER2553 tempers and conditions
ER2553 is supplied in 2 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed 1080–1120 °C, water quenched | Pick when the weldment or overlay can be re-solution-annealed to dissolve sigma/secondary phases and restore balanced 50/50 ferrite-austenite. | 560 | 800 | 27 | 24 HRC | 2.2 % IACS |
AWDefault As-welded deposit | Standard condition for GTAW/GMAW joints in 255/2507 base metal — use with controlled heat input and ≤150 °C interpass. | 600 | 830 | 22 | 27 HRC | 2.1 % IACS |
Supply forms, finishes and certifications
Ways ER2553 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
WIRE-CD | Cold-drawn bare filler wire | Supply form |
What is ER2553?
ER2553 (S39553) is a super duplex stainless bare filler wire matched to 2507 and 255 (S32550) base metals for high-strength service in chloride and acid environments. Supplied as drawn wire for GTAW, GMAW and SAW, it deposits typically 600 MPa yield, 830 MPa tensile, 22% elongation and 265 HB (27 HRC) with a corrosion rating of 84. Heat input and ferrite level must be controlled, and service is capped near 280 °C because of 475 °C embrittlement and sigma phase. ER2209 is the choice for standard 2205 duplex joints. ER2553 has a density of 7.81 g/cm³ (0.282 lb/in³), heavier than 57% of stainless steel grades. It melts at 1,350°C (2,462 °F). ER2553 has a yield strength of 600 MPa (87 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
What is ER2553 used for?
- Super duplex piping
- Offshore platforms
- Chemical tankers
Advantages
- Good corrosion resistance — 84/100, better than 91% of stainless steel grades
- High strength — 600 MPa (87 ksi), better than 86% of stainless steel grades
Limitations
- Limited service temperature — 280°C (536 °F), worse than 96% of stainless steel grades
- Difficult to machine — 22/100, worse than 95% of stainless steel grades
- Limited ductility — 22%, worse than 75% of stainless steel grades
ER2553 properties
Typical room-temperature values for ER2553-AW; bars are the position among stainless steel grades.
Physical3
ER2553 has a density of 7.81 g/cm³ (0.282 lb/in³), heavier than 57% of stainless steel grades. It melts at 1,350°C (2,462 °F).
Mechanical17
ER2553 has a yield strength of 600 MPa (87 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
ER2553 is rated for continuous service to 280°C (536 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 13 µm/m·K (7.22 µin/in·°F).
Electrical3
ER2553 conducts electricity at 2.1 % IACS, worse than 73% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (84/100), better than 91% of stainless steel grades.
Sustainability4
Producing a kilogram of ER2553 takes about 62 MJ of energy and emits 4.8 kg of CO₂ — more than 75% of stainless steel grades. Typical recycled content is 55%.
Manufacturability8
ER2553's machinability is poor (22/100, worse than 95% of stainless steel grades); weldability very good (70/100); formability fair (35/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. ER2553 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ER2553
Is ER2553 easy to machine?
Weld metal machines like super duplex — very work-hardening; use rigid setups, sharp positive-rake carbide, low speed (~40–60 m/min) and heavy positive feed with flood coolant.
Can ER2553 be welded?
GTAW/GMAW/SAW on 255, S32550, S32750 and dissimilar joints; keep heat input ~0.5–1.5 kJ/mm, interpass ≤150 °C, no preheat, use Ar+2–3 % N₂ backing to keep ferrite 35–55 FN.
Can ER2553 be formed, bent or molded?
Supplied only as drawn wire; the deposit itself has limited cold formability and high springback — bending of duplex weldments should be done above 3t radius.
ER2553 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 |
|---|---|---|
| C | ≤ 0.04 | 0.02 |
| Cr | 24 – 27 | 25.5 |
| Ni | 4.5 – 6.5 | 5.6 |
| Mo | 2.9 – 3.9 | 3.4 |
| CuCu improves resistance in reducing acids | 1.5 – 2.5 | 2 |
| N | 0.1 – 0.25 | 0.18 |
| Mn | ≤ 1.5 | 0.6 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Cu+othertotal of other elements per AWS A5.9 | ≤ 0.5 | |
| Fe | balance |
What surface finishes work on ER2553?
Remove all heat tint by pickling paste or mechanical cleaning plus HNO₃ passivation; not anodizable — electropolish for maximum pitting resistance.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel ER2553 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S39553
How much does ER2553 cost?
ER2553 is a high-cost stainless steel ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
ER2553 — frequently asked
What is ER2553 used for?
ER2553 is typically used for super duplex piping, offshore platforms and chemical tankers. In short: super duplex filler wire; matched to 255 and 2507; high-chloride weld deposits.
What is the yield strength of ER2553?
ER2553 has a typical yield strength of 600 MPa (87 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 86% of stainless steel grades. Strength varies by condition: see the 2 listed tempers.
Is ER2553 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 95% of stainless steel grades). Weld metal machines like super duplex — very work-hardening; use rigid setups, sharp positive-rake carbide, low speed (~40–60 m/min) and heavy positive feed with flood coolant.
Can ER2553 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/SAW on 255, S32550, S32750 and dissimilar joints; keep heat input ~0.5–1.5 kJ/mm, interpass ≤150 °C, no preheat, use Ar+2–3 % N₂ backing to keep ferrite 35–55 FN.
What surface finishes work on ER2553?
Remove all heat tint by pickling paste or mechanical cleaning plus HNO₃ passivation; not anodizable — electropolish for maximum pitting resistance.
Can ER2553 be formed, bent or molded?
Supplied only as drawn wire; the deposit itself has limited cold formability and high springback — bending of duplex weldments should be done above 3t radius.
What is the maximum service temperature of ER2553?
ER2553 is rated for continuous use to about 280°C (536 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ER2553-AW and ER2553-SA?
AW is the default condition — standard condition for GTAW/GMAW joints in 255/2507 base metal — use with controlled heat input and ≤150 °C interpass. SA: pick when the weldment or overlay can be re-solution-annealed to dissolve sigma/secondary phases and restore balanced 50/50 ferrite-austenite. Yield strength is 600 MPa in AW versus 560 MPa in SA.
How much does ER2553 cost?
ER2553 is a high-cost stainless steel ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- AWS A5.9/A5.9M — Bare Stainless Steel Welding Electrodes and Rods — American Welding Society (2017)
- ASTM A276/A479 & UNS S32550 chemistry cross-reference — ASTM International (2020)
- Ferralium 255 / UNS S32550 alloy datasheet — Langley Alloys (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels — IMOA (2014)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.