Stainless Steel E383-AW (As-welded deposit)
Heat-treated state · default condition
EN E383 · UNS W88028
Standard supplied/used condition: deposit tested and serviced in the as-welded state, no PWHT.
Values for the AW condition
Other E383 tempers and conditions
E383 is listed in 5 conditions; see the grade overview at E383.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Deposit solution annealed ~1120 °C + rapid quench | Used when the whole fabrication is solution annealed after welding to dissolve segregation and σ/χ phases and restore maximum corrosion resistance. | 300 | 560 | 45 | 160 HB | 1.8 % IACS |
Silica-rutile coating, AC or DCEP, as-welded | Choose for the smoothest bead profile and easiest slag removal on fillets and horizontal work; slightly more fluid slag than -16. | 385 | 570 | 35 | 185 HB | 1.7 % IACS |
AWDefaultThis page As-welded deposit | Standard supplied/used condition: deposit tested and serviced in the as-welded state, no PWHT. | 390 | 580 | 35 | 185 HB | 1.7 % IACS |
Lime-titania coating, AC or DCEP, as-welded | Most stocked coating type: AC/DC capable, all-position (except vertical-down), good slag release for site work. | 390 | 580 | 35 | 185 HB | 1.7 % IACS |
Lime (basic) coating, DCEP only, as-welded | Pick for the cleanest, lowest-oxygen deposit with best impact toughness and lowest hot-cracking risk on thick or restrained joints. | 400 | 590 | 37 | 190 HB | 1.7 % IACS |
What is E383-AW?
E383-AW is E383 heat treated to AW — standard supplied/used condition: deposit tested and serviced in the as-welded state, no PWHT. E383-AW has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 580 MPa (84.1 ksi) — stronger than 54% of stainless steel grades. Elongation at break is 35% and the elastic modulus is 195 GPa (28.3 Msi). E383-AW has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,355°C (2,471 °F).
Advantages
- Good corrosion resistance — 86/100, better than 94% of stainless steel grades
Limitations
- Poor heat conductor — 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- High embodied carbon — 6.5 kg CO₂/kg, worse than 93% of stainless steel grades
- Difficult to machine — 25/100, worse than 88% of stainless steel grades
E383-AW properties
Typical room-temperature values for E383-AW; 23 are specific to this condition. Other listed values are E383 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
E383-AW has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,355°C (2,471 °F).
Mechanical16
E383-AW has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 580 MPa (84.1 ksi) — stronger than 54% of stainless steel grades. Elongation at break is 35% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
E383-AW is rated for continuous service to 500°C (932 °F). It conducts heat at 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades. Thermal expansion is 14.5 µm/m·K (8.06 µin/in·°F).
Electrical3
E383-AW 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 E383-AW takes about 82 MJ of energy and emits 6.5 kg of CO₂ — more than 90% of stainless steel grades. Typical recycled content is 40%.
Manufacturability6
E383-AW's machinability is poor (25/100, worse than 88% of stainless steel grades); weldability very good (70/100); formability good (55/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E383-AW
Is E383 easy to machine?
Weld deposit is tough and strongly work-hardening — grind or machine with sharp carbide, heavy positive rake, low speed and rigid setup; avoid dwelling.
Can E383 be welded?
Redry electrodes (250–300 °C, 1–2 h), use DCEP (or AC for -16/-17), stringer beads, low heat input <1.5 kJ/mm and interpass ≤150 °C to avoid hot cracking and σ-phase in this fully austenitic deposit.
Can E383 be formed, bent or molded?
Not a wrought product; joint preparation should use wide bevels (≥70°) and gaps that accommodate the sluggish, low-penetration super-austenitic puddle.
What surface finishes work on E383?
Remove all slag and heat tint, then pickle (HNO₃/HF) and passivate — residual oxide scale is the usual cause of premature pitting in the weld zone.
E383 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 intergranular corrosion resistance | ≤ 0.03 | 0.02 |
| Cr | 26.5 – 29 | 27.5 |
| Ni | 30 – 33 | 31 |
| Mo | 3.2 – 4.2 | 3.6 |
| Cusulfuric/phosphoric acid resistance | 0.6 – 1.5 | 1 |
| Mn | 0.5 – 2.5 | 1.5 |
| Sikeep low to limit hot cracking | ≤ 0.9 | 0.5 |
| P | ≤ 0.02 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Febalance, ~34% | balance | — |
E383-AW — frequently asked
What is E383-AW used for?
E383-AW is typically used for chemical processing vessels, flue gas desulfurization equipment, pulp and paper bleach plants and seawater handling components. In short: matches 4%Mo super-austenitics; high chloride pitting resistance; hot-crack sensitive deposit.
What is the yield strength of E383-AW?
E383-AW has a typical yield strength of 390 MPa (56.6 ksi) and a tensile strength of 580 MPa (84.1 ksi) — stronger than 54% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is E383-AW easy to machine?
Not especially — machinability is rated poor (25/100, worse than 88% of stainless steel grades). Weld deposit is tough and strongly work-hardening — grind or machine with sharp carbide, heavy positive rake, low speed and rigid setup; avoid dwelling.
Can E383-AW be welded?
Yes — weldability is rated very good (70/100). Redry electrodes (250–300 °C, 1–2 h), use DCEP (or AC for -16/-17), stringer beads, low heat input <1.5 kJ/mm and interpass ≤150 °C to avoid hot cracking and σ-phase in this fully austenitic deposit.
What surface finishes work on E383-AW?
Remove all slag and heat tint, then pickle (HNO₃/HF) and passivate — residual oxide scale is the usual cause of premature pitting in the weld zone.
Can E383-AW be formed, bent or molded?
Not a wrought product; joint preparation should use wide bevels (≥70°) and gaps that accommodate the sluggish, low-penetration super-austenitic puddle.
What is the maximum service temperature of E383-AW?
E383-AW is rated for continuous use to about 500°C (932 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E383-AW and E383-SA?
AW is the default condition — standard supplied/used condition: deposit tested and serviced in the as-welded state, no PWHT. SA: used when the whole fabrication is solution annealed after welding to dissolve segregation and σ/χ phases and restore maximum corrosion resistance. Yield strength is 390 MPa in AW versus 300 MPa in SA.
Sources
- AWS A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- Sanicro 28 (UNS N08028) alloy datasheet — Alleima (Sandvik Materials Technology) (2023)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.