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ISO 2553 Weld Symbol letters

ISO 2553 Weld Symbol letters

ISO 2553 Weld Symbol letters

(OP)
Can anyone tell me if the letter "s" is required before the dimension for weld penetration on anything other than fillet welds? I can see from the standard that an "a" or a "z" is required when specifying fillet weld size but the examples for other welds are unclear as to the requirement for the "s".
Thanks
Pete

RE: ISO 2553 Weld Symbol letters

S is symbool four A,Z,I,V

RE: ISO 2553 Weld Symbol letters

s indicates the throat thickness for a deep penetration fillet weld. See section 6.2.3 for definition.

RE: ISO 2553 Weld Symbol letters

@ TVP
you are read in section 6.2.3 is explain

RE: ISO 2553 Weld Symbol letters

(OP)
Thanks all for trying to help.
The standard is fairly clear on what the letters stand for, what is not so clear is whether or not the letter s has to precede the penetration dimension when one is used (no dimension implies full penetration.

RE: ISO 2553 Weld Symbol letters

The letter precedes the dimension, whether it is z, a, or s.

RE: ISO 2553 Weld Symbol letters

The letter 's' is also required for partial penetrant welds such as shown in 'Single-V butt weld with broad root face' and with the 'Single-bevel butt weld with broad root face',Items 5&6 in table 1).It states this in the footnote at the bottom of that table.If their is no 's' value buttweld are to have complete penetration.(6.2.2).

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