Technical

The maximum allowable design stress limits for 9% nickel steel plates generally depend on specific design Codes: ASME BPVC Section VIII, Division 1: according to Table UHT-23, the maximum allowable design stress for 9% nickel steel(base metal) in both NNT & QT …

Although the 9% nickel alloy steel is not utilized normally for elevated temperature service, specific requirements allow pressure vessels to be cycled from moderately elevated temperatures to subzero temperature. A few experimental short time elevated-temperature tensile data for both NNT & …

The 9% nickel alloy steel plates are generally manufactured in accordance with either ASTM A353 or ASTM A553 Type I. The following procedures for heat treatment are recommended in the standard mentioned above: 1. Double Normalize and Temper (NNT) – …

The 9% nickel steel plates are widely used for the construction of cryogenic LNG pressure vessels. Usually, they shall be manufactured in accordance with ASME SA-353/ ASTM A353 in double normalized and tempered (NNT) condition, or ASME SA553/ ASTM A553 …

The clad plate, also known as clad steel plate, is a typical laminar metal composite made by bonding the special metal plate to a carbon steel or low alloy steel plate. Generally, the special metal plate is called cladding metal, which …

Identical with ASTM B551, ASME SB-551 is the standard specification for zirconium and zirconium alloy strip, sheet, and plate. It covers five grades: Gr. R60700 (low oxygen zirconium), Gr. R60702 (unalloyed zirconium), Gr. R60704 (Zr-Sn alloy), Gr. R60705 (Zr-Nb alloy), …

Identical with ASTM B550, ASME SB-550 is the standard specification for zirconium and zirconium alloy bar and wire. There are also three grades available: Gr. R60702 (unalloyed Zr), Gr. R60704 (Zr-Sn alloy), Gr. R60705 (Zr-Nb alloy). The zirconium bar may be …

Identical with ASTM B493, ASME SB-493 is the standard specification for zirconium and zirconium alloy forgings, which shall be furnished in annealed condition. There are three grades available covering Gr. R60702(unalloyed zirconium), Gr. R60704(zirconium-tin alloy), Gr. R60705(zirconium-niobium alloy). The forgings …

Identical with ASTM B523, ASME SB-523 is the standard specification of seamless and welded zirconium and zirconium alloy tubes. It also covers three same grades of zirconium as that of ASTM B658.  The standard specification covers referenced documents, terminology, classification …

Identical with ASTM B658, ASME SB-658 is the standard specification for seamless and welded zirconium and zirconium alloy pipes. It covers three grades: R60702 – unalloyed zirconium, R60704 – zirconium-tin alloy, R60705 – zirconium-niobium alloy. Generally, the pipe shall be …

ASTM SB-653 is identical with ASTM B653, except that some additional requirements shall apply. It is the standard specification for seamless and welded zirconium and zirconium alloy butt welding fittings. It covers 45° & 90° elbows, 180° returns(bends), caps, tees, …

Titanium’s TIG welding Generally, titanium shall be TIG welded, which means the welding shall be conducted under inert gas shielding. Both the welding area and heat affected zone(HAZ) shall be protected(shielded) by pure argon gas during the welding process until …