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5. Welding Standards
5.1 Welding Standards
This specification applies to all components supplied by
SAF-HOLLAND
, and its products. The customer assumes
®
full responsibility for weld integrity if weld material and
procedures differ from those listed below.
5.2 Workmanship
All welding on SAF-HOLLAND
by a welder qualified according to the appropriate AWS
standard for the weld being made or an equivalent standard.
It is the responsibility of the customer to provide good
workmanship when welding on SAF-HOLLAND
5.3 Material
Items to be welded that are made from low carbon or high-
strength alloy steel are to be welded with AWS filler metal
specification AWS A5.18, filler metal classification ER-70S-3,
ER-70S-6 or equivalent unless specified on the
installation drawing.
NOTE: Any substitution for filler material from the above
standard MUST comply, as a minimum, with the
following mechanical properties:
Tensile Strength - 72k psi (496 MPa)
Yield Strength - 60k psi (414 MPa)
Charpy V Notch - 20ft.-lbs. (27 N•m) at 0
Elongation - 22%
Figure 12
LACK OF FUSION OF ANY
KIND IN THIS AREA IS NOT
ACCEPTABLE AT ANY TIME
XL-LG20004UM-en-US Rev B · 2018-09-17 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
products MUST be performed
®
®
products.
F (-17.7
C)%
o
o
The recommended welding gas for gas metal arc welding
(GMAW) is 90% Argon / 10% CO2. If a different gas is used,
welds MUST comply with penetration requirements illustrated
(Figure 12). Where the installation drawing specifies
different than above, the drawing shall prevail.
5.4 Procedures
Tack welds used for positioning components are to be located
in the center of the final weld, where practical. Tack weld
should be completely fused to the finish weld. DO NOT
break arc at the end of the weld. Back up all finish welds
at least 1/2" (12.7 mm) or a sufficient amount to prevent
craters at the end of the weld. Where weld is shown to go
around corners, it is assumed the corner represents a stress
concentration area. DO NOT start or stop weld within
1" (25.4 mm) of the corner. Particular care should be taken
to prevent undercutting in this area.
5.5 Weld Size
If weld size is NOT specified, the effective throat of the weld
MUST be no smaller than the thinnest material being welded
(Figure 12).
PENETRATION AS MEASURED THROUGH SEAM
Welding Standards
TARGET PENETRATION TO BE
% OF THINNEST MATERIAL
FROM INTERSECTION OF FILLET
AS ILLUSTRATED
TARGET
PENETRATION
9
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