EXATON 309LNB

309LNb is a niobium-stabilized overalloyed filler metal suitable for overlay welding of carbon and low alloy steels, where a type 347 of overlay is required. It is used for MIG/MAG welding.

Category:

Description

Typical Charpy V-Notch Properties

Impact Value Testing Temperature
As Welded
15 J (11 ft-lb) -196 degC (-321 degF)
100 J (74 ft-lb) -60 degC (-76 degF)
130 J (96 ft-lb) 20 degC (68 degF)

Typical Tensile Properties

Condition Elongation Tensile Strength Yield Strength
As Welded 29 % 670 MPa (97 ksi) 500 MPa (73 ksi)

Recommended Welding Parameters

Current Voltage Wire Diameter Wire Feed Speed
60-220 A 15-28 V 1.0 mm (0.040 in.) 4.0-12.0 m/min (157-472 in./min)
150-260 A 24-29 V 1.2 mm (0.047 in.) 3.0-10.0 m/min (118-394 in./min)

Classifications

Wire Electrode SFA/AWS A5.9 : ER 309LNb
EN ISO 14343-A : G 23 12 Nb

Consumable Characteristics

Alloy Type Austenitic (with approx. 15 % ferrite) 24 % Cr – 13 % Ni – Low C – Nb

Typical Weld Metal Analysis %

Typical Wire Composition %
C Cr Mn Nb Ni P S Si
<=0.020 % 24 % 2 % 0.8 % 12.5 % <=0.020 % <=0.015 % 0.3 %