Iron Plate, ASTM A129
Iron Plate, ASTM A129
(OP)
I'll be posting this in several areas. We have some old welded pipe fabricated from iron plate, ASTM A129. This standard was withdrawn in 1966 with no replacement. The 1947 spec says it's very ductile, 25% elongation in 8". Has UTS of 44 ksi and YS of 27.5 ksi. We're trying to decide whether we can weld carbon steel to it, but we don't know what P-number the iron would be. Has anyone had experience with A129 flange quality iron plate?
Larry





RE: Iron Plate, ASTM A129
I would consider this material as P-No1 Group 1.
RE: Iron Plate, ASTM A129
Up to 650°F
The allowables are
A: 10,000/40,000 Ts
B: 11,000/44,000 Ts
C: 10,500/42,000 Ts
RE: Iron Plate, ASTM A129
Larry
RE: Iron Plate, ASTM A129
RE: Iron Plate, ASTM A129
P-102
.... a welded joint efficiency of 95 percent may be used provided all weld reinforcement is removed substantially flush with the surface of the plate. Otherwise, a joint efficiency not to exceed 90% shall be used.
The above paragraph is used in context of a full (100%) volumetric (RT) examination of the plate welds.
I don’t have Section VIII, but at that time the Code committees tended to parallel each other.