Specifications | Minimum tensile strength (p.s.i.) welded condition1 | Minimum elongation in 2 inches (percent) weld metal (longitudinal) |
AAR TC 128, Gr. B | 81,000 | 19 |
ASTM A 5162 | 70,000 | 20 |
1 Minimum stresses to be used in calculations.
2 This specification is incorporated by reference (IBR, see § 171.7 of this subchapter).
Specifications | Minimum tensile strength (p.s.i.) welded condition3 4 | Minimum elongation in 2 inches (percent) 0 temper weld metal (longitudinal) |
ASTM B 209, Alloy 50521 | 25,000 | 18 |
ASTM B 209, Alloy 50832 | 38,000 | 16 |
ASTM B 209, Alloy 50861 | 35,000 | 14 |
ASTM B 209, Alloy 51541 | 30,000 | 18 |
ASTM B 209, Alloy 52541 | 30,000 | 18 |
ASTM B 209, Alloy 54541 | 31,000 | 18 |
ASTM B 209, Alloy 56521 | 25,000 | 18 |
1 For fabrication, the parent plate material may be 0, H112, or H32 temper, but design calculations must be based on minimum tensile strength shown.
2 0 temper only.
3 Weld filler metal 5556 must not be used.
4 Maximum stresses to be used in calculations.
Specifications | Minimum tensile strength (p.s.i.) welded condition1 | Minimum elongation in 2 inches (percent) weld metal (longitudinal) |
ASTM A 240/A 240M (incorporated by reference; see§ 171.7 of this subchapter), Type 304 | 75,000 | 30 |
ASTM A 240/A 240M (incorporated by reference; see§ 171.7 of this subchapter), Type 304L | 70,000 | 30 |
ASTM A 240/A 240M (incorporated by reference; see§ 171.7 of this subchapter), Type 316 | 75,000 | 30 |
ASTM A 240/A 240M (incorporated by reference; see§ 171.7 of this subchapter), Type 316L | 70,000 | 30 |
1 Maximum stresses to be used in calculations.
2 High alloy steel materials used to fabricate tank and expansion dome, when used, must be tested in accordance with Practice A of ASTM Specification A 262 titled, "Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels" (IBR; see § 171.7 of this subchapter). If the specimen does not pass Practice A, Practice B or C must be used and the corrosion rates may not exceed the following:
Test procedure | Material | Corrosion rate i.p.m. |
Practice B | Types 304, 304L, 316, and 316L | 0.0040 |
Practice C | Type 304L | .0020 |
Type 304L and Type 316L test specimens must be given a sensitizing treatment prior to testing. (A typical sensitizing treatment is 1 hour at 1250 F.)
Specifications | Minimum tensile strength (psi) welded condition1 | Minimum elongation in 2 inches (percent) weld metal (longitudinal) |
ASTM B 1622 | 40,000 | 20 |
Specifications | Minimum tensile strength (p.s.i.) welded condition1 | Minimum elongation in 2 inches (percent) weld metal (longitudinal) |
ASTM A 302, Gr. B | 80,000 | 20 |
1 Maximum stresses to be used in calculations.
49 C.F.R. §§179.200-7