Stainless Steel E2595
UNS W39595 · ASTM A5.4
E2595 is a tungsten-alloyed super duplex covered electrode to AWS A5.4 (UNS W39595), supplied in -15, -16 and -17 coatings and intended for Zeron 100-type base metals.
Reference datasheet — E2595 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
E2595 tempers and conditions
E2595 is supplied in 5 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution Annealed | Pick when the weldment (e.g. super duplex casting repair) is re-solution annealed and quenched to restore phase balance and maximum corrosion resistance. | 620 | 830 | 30 | 24 HRC | 2 % IACS |
E2595-17 | Use where bead appearance, slag release and easy flat/horizontal welding matter more than peak toughness. | 670 | 875 | 24 | 27 HRC | 2 % IACS |
AWDefault As-welded deposit | Standard supplied/qualified condition for E2595 deposits; use for site and shop welds on Zeron 100-type super duplex. | 680 | 880 | 25 | 27 HRC | 2 % IACS |
E2595-16 | Most commonly stocked coating type: good all-position operability with adequate toughness for seawater piping. | 680 | 880 | 25 | 27 HRC | 2 % IACS |
E2595-15 | Choose for lowest hydrogen/oxygen deposit and best low-temperature toughness in restrained or thick-section joints. | 700 | 890 | 25 | 28 HRC | 2 % IACS |
What is E2595?
E2595 is a tungsten-alloyed super duplex covered electrode to AWS A5.4 (UNS W39595), supplied in -15, -16 and -17 coatings and intended for Zeron 100-type base metals. It offers the highest corrosion resistance in this electrode family, with as-welded values around 680 MPa yield, 880 MPa tensile, 25% elongation and 270 HB (27 HRC), and service to about 275 °C. The deposit machines at roughly 20% of AISI 1212 and demands tight control of heat input and ferrite content. E2594 is the usual substitute where tungsten alloying is not specified. E2595 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,350°C (2,462 °F). E2595 has a yield strength of 680 MPa (98.6 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 91% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi).
What is E2595 used for?
- high-chloride marine equipment
- seawater pumps and valves
- offshore critical components
Advantages
- Good corrosion resistance — 90/100, better than 99% of stainless steel grades
- High strength — 680 MPa (98.6 ksi), better than 91% of stainless steel grades
Limitations
- Limited service temperature — 275°C (527 °F), worse than 98% of stainless steel grades
- Difficult to machine — 22/100, worse than 95% of stainless steel grades
- High embodied carbon — 5.8 kg CO₂/kg, worse than 86% of stainless steel grades
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
E2595 properties
Typical room-temperature values for E2595-AW; bars are the position among stainless steel grades.
Physical3
E2595 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,350°C (2,462 °F).
Mechanical17
E2595 has a yield strength of 680 MPa (98.6 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 91% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
E2595 is rated for continuous service to 275°C (527 °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
E2595 conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is excellent (90/100), better than 99% of stainless steel grades.
Sustainability4
Producing a kilogram of E2595 takes about 62 MJ of energy and emits 5.8 kg of CO₂ — more than 75% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
E2595'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. E2595 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E2595
Is E2595 easy to machine?
Weld deposit is tough and work-hardening — use rigid setups, sharp carbide tools, low speed/high feed and flood coolant; expect ~20 % of AISI 1212.
Can E2595 be welded?
Deposit with DCEP (AC for -16/-17), heat input roughly 0.5–1.5 kJ/mm, interpass ≤ 150 °C, no preheat needed above 5 °C, redry electrodes 250–300 °C to keep hydrogen low and preserve 35–55 % ferrite.
Can E2595 be formed, bent or molded?
Consumable — not formed; deposited weld metal has high yield strength and springback, so any cold straightening of weldments must be limited to avoid cracking.
E2595 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 |
|---|---|---|
| Cmax per AWS A5.4 | ≤ 0.04 | 0.03 |
| Cr | 24 – 27 | 25 |
| Ni | 8 – 10.5 | 9.5 |
| Mo | 2.5 – 4.5 | 3.6 |
| Wtungsten addition, Zeron 100 type | 0.4 – 1 | 0.7 |
| Cu | 0.4 – 1.5 | 0.7 |
| N | 0.2 – 0.3 | 0.25 |
| Mn | ≤ 2.5 | 0.8 |
| Si | ≤ 1.2 | 0.8 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on E2595?
Remove slag fully, then grind, pickle (HNO3/HF) and passivate to restore the chromium-rich film; leaving heat tint sharply lowers 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 E2595 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W39595
- ASTM
- A5.4
How much does E2595 cost?
E2595 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.
E2595 — frequently asked
What is E2595 used for?
E2595 is typically used for high-chloride marine equipment, seawater pumps and valves and offshore critical components. In short: highest corrosion resistance duplex; tungsten-alloyed weld metal; for Zeron 100-type base metal.
What is the yield strength of E2595?
E2595 has a typical yield strength of 680 MPa (98.6 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 91% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is E2595 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 95% of stainless steel grades). Weld deposit is tough and work-hardening — use rigid setups, sharp carbide tools, low speed/high feed and flood coolant; expect ~20 % of AISI 1212.
Can E2595 be welded?
Yes — weldability is rated very good (70/100). Deposit with DCEP (AC for -16/-17), heat input roughly 0.5–1.5 kJ/mm, interpass ≤ 150 °C, no preheat needed above 5 °C, redry electrodes 250–300 °C to keep hydrogen low and preserve 35–55 % ferrite.
What surface finishes work on E2595?
Remove slag fully, then grind, pickle (HNO3/HF) and passivate to restore the chromium-rich film; leaving heat tint sharply lowers pitting resistance.
Can E2595 be formed, bent or molded?
Consumable — not formed; deposited weld metal has high yield strength and springback, so any cold straightening of weldments must be limited to avoid cracking.
What is the maximum service temperature of E2595?
E2595 is rated for continuous use to about 275°C (527 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E2595-AW and E2595-SA?
AW is the default condition — standard supplied/qualified condition for E2595 deposits; use for site and shop welds on Zeron 100-type super duplex. SA: pick when the weldment (e.g. super duplex casting repair) is re-solution annealed and quenched to restore phase balance and maximum corrosion resistance. Yield strength is 680 MPa in AW versus 620 MPa in SA.
How much does E2595 cost?
E2595 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 A5.4/A5.4M — Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ISO 3581 — Welding consumables, covered electrodes for stainless and heat-resisting steels — ISO (2016)
- ASTM A890/A890M & ASTM A182 (UNS S32760 base metal) — ASTM (2022)
- Super duplex SMAW electrode datasheets (25 9 4 Cu W N type) — Böhler Welding / Sandvik / Metrode (2023)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering (duplex stainless welding) — ASM International (1993)
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.