No minimum hardness value for SA213 - 2004
No minimum hardness value for SA213 - 2004
(OP)
Hi all,
I just wondering why only maximum hardness is specified for all materials in ASTM SA213 - Table 4 and not the minimum hardness. I think minimum hardness is also very important to look for material deterioration due to spheriodization as well as creep especially on low alloy steel when subjected high pressure and temperature . Any one can clarify on this?
I just wondering why only maximum hardness is specified for all materials in ASTM SA213 - Table 4 and not the minimum hardness. I think minimum hardness is also very important to look for material deterioration due to spheriodization as well as creep especially on low alloy steel when subjected high pressure and temperature . Any one can clarify on this?





RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004
Look at Table 331.1.1 in ASME B31.3 Process Piping Code over to the right in the column are maximum hardness values. See Note 4 below, these values apply to bending and after PWHT, see Note 4 below
331.1.7 Hardness Tests. Hardness tests of production
welds and of hot bent and hot formed piping are
intended to verify satisfactory heat treatment. The hardness
limit applies to the weld and to the heat affected
zone (HAZ) tested as close as practicable to the edge of
the weld.
(a) Where a hardness limit is specified in Table 331.1.1,
at least 10% of welds, hot bends, and hot formed components
in each furnace heat treated batch and 100% of
those locally heat treated shall be tested.
(b) When dissimilar metals are joined by welding,
the hardness limits specified for the base and welding
materials in Table 331.1.1 shall be met for each material.
RE: No minimum hardness value for SA213 - 2004
RE: No minimum hardness value for SA213 - 2004