Stainless Steel E316LMn-AW (As-welded deposit)
Heat-treated state · default condition
UNS W31622
Default condition for design data: as-deposited, no post-weld heat treatment — the way virtually all E316LMn joints are used.
Values for the AW condition
Other E316LMn tempers and conditions
E316LMn is listed in 4 conditions; see the grade overview at E316LMn.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
E316LMn-17 | Higher-silica variant giving a smoother, more fluid pool and best bead appearance for downhand fillets and cosmetic passes. | 395 | 600 | 36 | 195 HB | 2 % IACS |
AWDefaultThis page As-welded deposit | Default condition for design data: as-deposited, no post-weld heat treatment — the way virtually all E316LMn joints are used. | 400 | 610 | 38 | 14 HRC | 2 % IACS |
E316LMn-16 | The general-purpose stock version: easy arc start, fine ripple, all-position use with AC or DC — the usual choice for shop and site fabrication. | 400 | 610 | 38 | 200 HB | 2 % IACS |
E316LMn-15 | Choose for maximum weld-metal toughness and lowest hydrogen/impurity level, flat and vertical-up positional work on thick cryogenic sections. | 410 | 620 | 40 | 205 HB | 2 % IACS |
What is E316LMn-AW?
E316LMn-AW is E316LMn heat treated to AW — default condition for design data: as-deposited, no post-weld heat treatment — the way virtually all E316LMn joints are used. E316LMn-AW has a yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 196 GPa (28.4 Msi). E316LMn-AW has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Advantages
- Readily welded — 82/100, better than 84% of stainless steel grades
Limitations
- Hard to polish — 60/100, worse than 80% of stainless steel grades
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
E316LMn-AW properties
Typical room-temperature values for E316LMn-AW; 24 are specific to this condition. Other listed values are E316LMn reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
E316LMn-AW has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical17
E316LMn-AW has a yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal6
E316LMn-AW is rated for continuous service to 450°C (842 °F). It conducts heat at 14 W/m·K (8.09 BTU/hr·ft·°F), worse than 80% of stainless steel grades. Thermal expansion is 16.5 µm/m·K (9.17 µin/in·°F).
Electrical3
E316LMn-AW conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 73% of stainless steel grades.
Sustainability4
Producing a kilogram of E316LMn-AW takes about 55 MJ of energy and emits 5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
E316LMn-AW's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (82/100); formability good (60/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E316LMn-AW
Is E316LMn easy to machine?
Deposit work-hardens strongly and is gummy — use sharp positive-rake carbide, heavy feed, rigid setup and flood coolant; grind slag/oxide off before finish cuts.
Can E316LMn be welded?
Redry electrodes (rutile ~150 °C, basic ~250–300 °C), weld with low heat input, stringer beads, interpass below ~150 °C and no preheat — the 0 FN fully austenitic deposit is hot-crack sensitive if the pool is large or crater-filled hot.
Can E316LMn be formed, bent or molded?
Not a wrought product; the deposit itself is highly ductile (≈35–40 % elongation) and tolerates cold straightening of welded assemblies without cracking.
What surface finishes work on E316LMn?
Pickle and passivate or electropolish after slag removal; use stainless-only brushes and grinding media to avoid iron contamination and keep the nitrogen-alloyed passive film intact.
E316LMn 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 | ≤ 0.04 | 0.03 |
| Cr | 18 – 21 | 19.5 |
| Ni | 15 – 18 | 16.5 |
| Mo | 2.5 – 3.5 | 3 |
| Mnaustenite stabiliser, raises N solubility | 5 – 8 | 6.5 |
| N | 0.1 – 0.25 | 0.16 |
| Si | ≤ 0.9 | 0.5 |
| Cu | ≤ 0.75 | — |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Febalance; analysis is of the undiluted weld deposit | balance | — |
E316LMn-AW — frequently asked
What is E316LMn-AW used for?
E316LMn-AW is typically used for cryogenic storage tanks, LNG equipment and nitrogen-alloyed stainless fabrication. In short: cryogenic-rated 316L filler; fully austenitic 0 FN deposit; for N-alloyed stainless.
What is the yield strength of E316LMn-AW?
E316LMn-AW has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is E316LMn-AW easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Deposit work-hardens strongly and is gummy — use sharp positive-rake carbide, heavy feed, rigid setup and flood coolant; grind slag/oxide off before finish cuts.
Can E316LMn-AW be welded?
Yes — weldability is rated very good (82/100). Redry electrodes (rutile ~150 °C, basic ~250–300 °C), weld with low heat input, stringer beads, interpass below ~150 °C and no preheat — the 0 FN fully austenitic deposit is hot-crack sensitive if the pool is large or crater-filled hot.
What surface finishes work on E316LMn-AW?
Pickle and passivate or electropolish after slag removal; use stainless-only brushes and grinding media to avoid iron contamination and keep the nitrogen-alloyed passive film intact.
Can E316LMn-AW be formed, bent or molded?
Not a wrought product; the deposit itself is highly ductile (≈35–40 % elongation) and tolerates cold straightening of welded assemblies without cracking.
What is the maximum service temperature of E316LMn-AW?
E316LMn-AW is rated for continuous use to about 450°C (842 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- AWS A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ISO 3581 — Welding consumables: covered electrodes for manual metal arc welding of stainless and heat-resisting steels — ISO (2016)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering (austenitic stainless filler metals) — ASM International (1993)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- All-weld-metal data for high-Mn nitrogen-alloyed 316L-type covered electrodes — voestalpine Böhler Welding / ESAB / Lincoln Electric (2023)
- Outokumpu Stainless Steel Handbook (1.4429/316LN physical properties) — Outokumpu (2020)
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.