Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. jasgeer

    How to determine whether metal is 316 or 316L?

    We have a XRF alloy analyzer, but it is insenstive to carbon. Is there a simple test to measure carbon content that we can run to determine if a material is 316 vs 316L, or 304 vs 304L? We need to identify metals at incoming inspection and on our shop floor. Thanks for your ideas!
  2. jasgeer

    Where is Inconel 600 in MR0175?

    We have been using Inconel 600 and 625 in our NACE MR0175 compliant products for many years. In the 1997 version of the spec the relevant sections were 4.1.4.1 and 4.1.5.1. However, upon reviewing the recent 2003 version, section 4.11.1 precludes the use of Inconel 600 because the Mo content...
  3. jasgeer

    How to stop hydrogen permeation during gold plating of a SS diaphragm?

    We use gold plating to stop hydrogen permeation in a thin SS sensing diaphragm, but the process of applying the gold plating is causing hydrogen to go through the diaphragm and to be stored in it. How might we change the plating process or post-treat the sensor to avoid the hydrogen problem...
  4. jasgeer

    H2 Embrittlement of ASTM 4140/4142 after cad plating?

    After cad plating stainless steels we normally specify a baking procedure to avoid hydrogen embrittlement issues. Do high strength steel materials like 4037/4140/4142/8637/8740 that are cad plated have problems with hydrogen and also need baking? Thank you for your assistance, Jim
  5. jasgeer

    China 42CrMo vs ASTM 4140/4142

    We are in the process of sourcing machined parts in China and need to know whether the Chinese material specification GB/T3077 for their 42CrMo is equivalent to our ASTM/AISI 4140 and 4142 (we use both interchangeably). The obvious metallurgical difference is that 4140/4140 have trace...
  6. jasgeer

    Effect of manganese in 303SS

    Most of the material standards state that the amount of manganese in 303SS should be less than 2%. We have a supplier who wants to supply '303' with >2% manganese. What is the effect if the manganese runs 0.5-1.0% high? Thanks, Jim
  7. jasgeer

    Bolt mat'l for offshore marine (sea water) exposure

    I am working on a project where I need to select the bolt material that will withstand long-term exposure to marine environments. What mat'l would you recommend that has a relatively high strength? The fastener will retain a 316SS vessel (at ambient temperature) . I would desire >100K PSI...

Part and Inventory Search

Back
Top