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AWS E316LMn (W31622) Weld Metal

AWS E316LMn is a weld metal formulated for joining stainless steels. Cited properties are appropriate for the as-welded condition. E316LMn is the AWS designation for this material. W31622 is the UNS number. Additionally, the ISO numeric designation is ES316LMn.

It has a moderately high embodied energy and a moderately high base cost among stainless steel welding fillers.

The graph bars on the material properties cards below compare AWS E316LMn to: stainless steel welding fillers (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

200 GPa 29 x 10⁶ psi

Elongation at Break

23 %

Poisson's Ratio

0.28

Shear Modulus

79 GPa 11 x 10⁶ psi

Tensile Strength: Ultimate (UTS)

620 MPa 89 x 10³ psi

Thermal Properties

Latent Heat of Fusion

300 J/g

Melting Completion (Liquidus)

1420 °C 2590 °F

Melting Onset (Solidus)

1370 °C 2510 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Expansion

14 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

24 % relative

Density

7.9 g/cm³ 490 lb/ft³

Embodied Carbon

4.6 kg CO₂/kg material

Embodied Energy

64 MJ/kg 28 x 10³ BTU/lb

Embodied Water

180 L/kg 22 gal/lb

Common Calculations

PREN (Pitting Resistance)

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

22 points

Strength to Weight: Bending

20 points

Thermal Shock Resistance

15 points

Alloy Composition

Iron (Fe)Fe		47.5 to 59.4
Chromium (Cr)Cr		18 to 21
Nickel (Ni)Ni		15 to 18
Manganese (Mn)Mn		5.0 to 8.0
Molybdenum (Mo)Mo		2.5 to 3.5
Silicon (Si)Si		0 to 0.9
Copper (Cu)Cu		0 to 0.75
Nitrogen (N)N		0.1 to 0.25
Carbon (C)C		0 to 0.040
Phosphorus (P)P		0 to 0.040
Sulfur (S)S		0 to 0.030