# WELDERS?

**URL:** <https://forums.speedlife.net/t/welders/147591>\
**Category:** Canada Nissan Automotive\
**Created:** [August 8, 2007, 11:51am UTC](https://forums.speedlife.net/t/welders/147591 "2007-08-08T11:51:17Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![imported\_nismo1](https://avatars.discourse-cdn.com/v4/letter/i/76d3ee/32.png) [@imported\_nismo1](https://forums.speedlife.net/u/imported_nismo1)\
**Post date:** [August 8, 2007, 11:51am UTC](https://forums.speedlife.net/t/welders/147591/1 "2007-08-08T11:51:17Z")

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anybody here knows if 304 STAINLESS STEEL piping will weld and hold to a regular mild steel flange? And where would i go locay to get a STAINLESS STEEL flange cut out?

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**Author:** ![rheddrahgon](https://avatars.discourse-cdn.com/v4/letter/r/df788c/32.png) [@rheddrahgon](https://forums.speedlife.net/u/rheddrahgon)\
**Post date:** [August 8, 2007, 4:36pm UTC](https://forums.speedlife.net/t/welders/147591/2 "2007-08-08T16:36:43Z")

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use 309 rod for dissimilar metals and it will hold just fine

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**Author:** ![Jason\_Lange](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@Jason\_Lange](https://forums.speedlife.net/u/Jason_Lange)\
**Post date:** [August 8, 2007, 8:32pm UTC](https://forums.speedlife.net/t/welders/147591/3 "2007-08-08T20:32:37Z")

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Use 309L for mild to 300 series austenetic stainless steel. You should still back purge as with regular stainless as you will still get “sugaring”.

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**Author:** ![rheddrahgon](https://avatars.discourse-cdn.com/v4/letter/r/df788c/32.png) [@rheddrahgon](https://forums.speedlife.net/u/rheddrahgon)\
**Post date:** [August 9, 2007, 5:22am UTC](https://forums.speedlife.net/t/welders/147591/4 "2007-08-09T05:22:56Z")

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use argon if you can for purge. If you dont get the right absence of air you gould even get ‘grapes’ that could let go later and rattle around in your IC and make you realy wonder whats broken LOL

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**Author:** ![Jason\_Lange](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@Jason\_Lange](https://forums.speedlife.net/u/Jason_Lange)\
**Post date:** [August 14, 2007, 6:44pm UTC](https://forums.speedlife.net/t/welders/147591/5 "2007-08-14T18:44:19Z")

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> [@rheddrahgon](#):
>
> use argon if you can for purge. If you dont get the right absence of air you gould even get ‘grapes’ that could let go later and rattle around in your IC and make you realy wonder whats broken LOL

No you won’t get “grapes” from not having an argon back purge. You will get “sugaring” which is similar to porosity on the back side of the weld. “Grapes” are caused by excessive penetration.

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**Author:** ![rheddrahgon](https://avatars.discourse-cdn.com/v4/letter/r/df788c/32.png) [@rheddrahgon](https://forums.speedlife.net/u/rheddrahgon)\
**Post date:** [August 15, 2007, 5:28am UTC](https://forums.speedlife.net/t/welders/147591/6 "2007-08-15T05:28:27Z")

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lol…do i have some pictures to show you!

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**Author:** ![rheddrahgon](https://avatars.discourse-cdn.com/v4/letter/r/df788c/32.png) [@rheddrahgon](https://forums.speedlife.net/u/rheddrahgon)\
**Post date:** [August 15, 2007, 6:19am UTC](https://forums.speedlife.net/t/welders/147591/7 "2007-08-15T06:19:16Z")

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hmmm…i realise i typed that funny…i know you dont get grapes from a bad purge. Thinking faster than im typing again…lol.

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**Author:** ![Jason\_Lange](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@Jason\_Lange](https://forums.speedlife.net/u/Jason_Lange)\
**Post date:** [August 16, 2007, 8:16pm UTC](https://forums.speedlife.net/t/welders/147591/8 "2007-08-16T20:16:26Z")

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> [@rheddrahgon](#):
>
> hmmm…i realise i typed that funny…i know you dont get grapes from a bad purge. Thinking faster than im typing again…lol.

Hehe isn’t it typing faster than your thinking?? :E