Stainless Steel E308LT-1
GB E308LT1-1
E308LT-1 (UNS W30813, also written E308LT1-1) is a rutile flux-cored tubular wire that deposits low-carbon 308L-type austenitic weld metal for flux-cored arc welding.
Reference datasheet — E308LT-1 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
E308LT-1 tempers and conditions
E308LT-1 is supplied in 3 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Deposit solution annealed ~1050 °C, water quenched | Used when the whole fabrication is post-weld solution annealed (e.g. cladding, pressure parts) — softens the deposit, dissolves ferrite partially and maximises corrosion resistance. | 300 | 545 | 48 | 155 HB | 2.4 % IACS |
AWDefault As-welded deposit | Standard all-position FCAW deposit with 100% CO₂ shielding — the condition virtually all 308L flux-cored joints are used in. | 410 | 590 | 40 | 180 HB | 2.3 % IACS |
As-welded deposit, Ar/CO₂ mixed gas | Same wire family run on 75–80% Ar / balance CO₂ — lower spatter and slightly higher tensile/toughness, chosen for cleaner cosmetic welds. | 425 | 605 | 41 | 180 HB | 2.3 % IACS |
What is E308LT-1?
E308LT-1 (UNS W30813, also written E308LT1-1) is a rutile flux-cored tubular wire that deposits low-carbon 308L-type austenitic weld metal for flux-cored arc welding. It gives higher deposition rates than solid wire with all-position operation, and is used on 304 and 304L tankage, pipe spools and shipyard structures; deposits run about 410 MPa yield, 590 MPa tensile, 40% elongation and 180 HB (88 HRB), rated to 800 °C with corrosion resistance scored 63. Slag must be removed between passes and spools kept dry; where slag-free root passes are required, an ER308LSi solid wire is the alternative. E308LT-1 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). E308LT-1 has a yield strength of 410 MPa (59.5 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 60% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 195 GPa (28.3 Msi).
What is E308LT-1 used for?
- High-productivity FCAW of 304/304L structures
- Shipbuilding stainless fabrication
- Stainless storage tanks and vessel shells
- Process pipe spool fill and cap passes
- Structural stainless frames and platforms
- Food and dairy equipment structural welds
Advantages
- Readily welded — 92/100, better than 98% of stainless steel grades
- Forms and bends easily — 70/100, better than 79% of stainless steel grades
Limitations
- High embodied carbon — 6.3 kg CO₂/kg, worse than 91% of stainless steel grades
- Hard to polish — 60/100, worse than 80% of stainless steel grades
E308LT-1 properties
Typical room-temperature values for E308LT-1-AW; bars are the position among stainless steel grades.
Physical3
E308LT-1 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
E308LT-1 has a yield strength of 410 MPa (59.5 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 60% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
E308LT-1 is rated for continuous service to 800°C (1,472 °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 16.6 µm/m·K (9.22 µin/in·°F).
Electrical3
E308LT-1 conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (63/100), better than 53% of stainless steel grades.
Sustainability4
Producing a kilogram of E308LT-1 takes about 62 MJ of energy and emits 6.3 kg of CO₂ — more than 75% of stainless steel grades. Typical recycled content is 60%.
Manufacturability5
E308LT-1's machinability is fair (36/100, better than 57% of stainless steel grades); weldability excellent (92/100); formability very good (70/100).
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. E308LT-1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E308LT-1
Is E308LT-1 easy to machine?
Weld deposit machines like 304L — work-hardening and gummy; use sharp carbide, positive rake, rigid setup, heavy feed and flood coolant; grind out slag/oxide before cutting to protect edges.
Can E308LT-1 be welded?
FCAW with 100% CO₂ (T1-1) at ~26–30 V DCEP, 15–25 mm stickout, 20–25 L/min gas; all-position with the T1 rutile slag; keep interpass ≤150 °C, no preheat, deslag every pass.
Can E308LT-1 be formed, bent or molded?
Not formed as a product; the deposit itself is very ductile (≈40% elongation) and tolerates weld-joint bend testing and light peening/straightening.
E308LT-1 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 |
|---|---|---|
| CL grade, low carbon | ≤ 0.04 | 0.03 |
| Cr | 18 – 21 | 19.5 |
| Ni | 9 – 11 | 9.8 |
| Mn | 0.5 – 2.5 | 1.4 |
| Si | ≤ 1 | 0.7 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Mo | ≤ 0.5 | 0.1 |
| Cu | ≤ 0.5 | 0.1 |
| Nb+Taresidual, some standards list Cb | ≤ 0.1 | 0.02 |
| Febalance (undiluted weld metal) | balance |
What surface finishes work on E308LT-1?
Remove all slag and heat tint, then pickle/passivate (HNO₃-HF paste) or mechanically blast/brush with stainless-only media to restore the passive film before service.
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 E308LT-1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- GB (China)
- E308LT1-1
- Similar grades
- W30813
How much does E308LT-1 cost?
E308LT-1 is a premium-cost stainless steel ($$$), cheaper than about 51% 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.
E308LT-1 — frequently asked
What is E308LT-1 used for?
E308LT-1 is typically used for high-productivity FCAW of 304/304L structures, shipbuilding stainless fabrication, stainless storage tanks and vessel shells, process pipe spool fill and cap passes, structural stainless frames and platforms and food and dairy equipment structural welds. In short: high-deposition 308L wire; all-position flux-cored; faster than solid 308L.
What is the yield strength of E308LT-1?
E308LT-1 has a typical yield strength of 410 MPa (59.5 ksi) and a tensile strength of 590 MPa (85.6 ksi) — stronger than 60% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is E308LT-1 easy to machine?
Not especially — machinability is rated fair (36/100, better than 57% of stainless steel grades). Weld deposit machines like 304L — work-hardening and gummy; use sharp carbide, positive rake, rigid setup, heavy feed and flood coolant; grind out slag/oxide before cutting to protect edges.
Can E308LT-1 be welded?
Yes — weldability is rated excellent (92/100). FCAW with 100% CO₂ (T1-1) at ~26–30 V DCEP, 15–25 mm stickout, 20–25 L/min gas; all-position with the T1 rutile slag; keep interpass ≤150 °C, no preheat, deslag every pass.
What surface finishes work on E308LT-1?
Remove all slag and heat tint, then pickle/passivate (HNO₃-HF paste) or mechanically blast/brush with stainless-only media to restore the passive film before service.
Can E308LT-1 be formed, bent or molded?
Not formed as a product; the deposit itself is very ductile (≈40% elongation) and tolerates weld-joint bend testing and light peening/straightening.
What is the maximum service temperature of E308LT-1?
E308LT-1 is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E308LT-1-AW and E308LT-1-SA?
AW is the default condition — standard all-position FCAW deposit with 100% CO₂ shielding — the condition virtually all 308L flux-cored joints are used in. SA: used when the whole fabrication is post-weld solution annealed (e.g. cladding, pressure parts) — softens the deposit, dissolves ferrite partially and maximises corrosion resistance. Yield strength is 410 MPa in AW versus 300 MPa in SA.
How much does E308LT-1 cost?
E308LT-1 is a premium-cost stainless steel ($$$), cheaper than about 51% 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 A5.22/A5.22M — Specification for Stainless Steel Flux Cored and Metal Cored Electrodes and Rods — AWS (2012)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Stainless flux-cored wire 308L-type datasheets (Lincoln Electric, ESAB, Kobelco) — various producers (2023)
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.