Stainless Steel E316LMn
UNS W31622
E316LMn is a manganese-enriched, low-carbon 316L-type stainless electrode (UNS W31622) with modified ferrite control, listed in -15, -16 and -17 coating classes and in as-welded and cryogenic-qualified conditions.
Reference datasheet — E316LMn 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
E316LMn tempers and conditions
E316LMn is supplied in 4 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
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 |
AWDefault 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 |
Supply forms, finishes and certifications
Ways E316LMn is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
AW-CRYO | As-welded, qualified for cryogenic (−196 °C) impact | Certification |
What is E316LMn?
E316LMn is a manganese-enriched, low-carbon 316L-type stainless electrode (UNS W31622) with modified ferrite control, listed in -15, -16 and -17 coating classes and in as-welded and cryogenic-qualified conditions. It is chosen for cryogenic vessels and for joining nitrogen-alloyed austenitic stainless steels, with deposits near 400 MPa yield, 610 MPa tensile, 38% elongation and 200 HB, rated to 450 °C and a corrosion score of 72. The fully austenitic 0 FN deposit is hot-crack sensitive and needs disciplined low heat input; where cryogenic toughness is not required, standard E316L is easier to run. E316LMn 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). E316LMn 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).
What is E316LMn used for?
- cryogenic storage tanks
- LNG equipment
- nitrogen-alloyed stainless fabrication
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 properties
Typical room-temperature values for E316LMn-AW; bars are the position among stainless steel grades.
Physical3
E316LMn 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 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 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 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 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'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. 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. E316LMn is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E316LMn
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.
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 |
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.
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 E316LMn in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W31622
- Also called
- AWS A5.4 E316LMn
How much does E316LMn cost?
E316LMn is a high-cost stainless steel ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
E316LMn — frequently asked
What is E316LMn used for?
E316LMn is typically used for cryogenic storage tanks, LNG equipment and nitrogen-alloyed stainless fabrication. In short: cryogenic-rated 316L filler; fully austenitic 0 FN deposit; for N-alloyed stainless.
What is the yield strength of E316LMn?
E316LMn has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is E316LMn easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Deposit work-hardens strongly and is gummy — use sharp positive-rake carbide, heavy feed, rigid setup and flood coolant; grind slag/oxide off before finish cuts.
Can E316LMn be welded?
Yes — weldability is rated very good (82/100). Redry electrodes (rutile ~150 °C, basic ~250–300 °C), weld with low heat input, stringer beads, interpass below ~150 °C and no preheat — the 0 FN fully austenitic deposit is hot-crack sensitive if the pool is large or crater-filled hot.
What surface finishes work on E316LMn?
Pickle and passivate or electropolish after slag removal; use stainless-only brushes and grinding media to avoid iron contamination and keep the nitrogen-alloyed passive film intact.
Can E316LMn be formed, bent or molded?
Not a wrought product; the deposit itself is highly ductile (≈35–40 % elongation) and tolerates cold straightening of welded assemblies without cracking.
What is the maximum service temperature of E316LMn?
E316LMn is rated for continuous use to about 450°C (842 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does E316LMn cost?
E316LMn is a high-cost stainless steel ($$$$), 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 — 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; 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.