Cryogenic & Nickel Steel Plate · cryogenic-service plate for LNG and ethylene storage tanks, air-separation cold boxes, and cryogenic transport and fuel tanks
1.1 This specification covers 7, 8, and 9 % nickel alloy steel plates for use in the water quenched and tempered condition intended for the fabrication of welded pressure vessels. 1.2 Material under this specification is available in three types having different chemical composition as follows: Types and Nominal Nickel Content Type Nominal Nickel Content, % I 9 II 8 III 7 1.3 Plates produced under this specification are subject to impact testing at -320°F [-195°C] for Type I or Type III, and -275°F [-170°C] for…
Specification text excerpt, reproduced for reference. Read the full ASME SA-553/SA-553M text →
| Element | Type I | Type II | Type III |
|---|---|---|---|
| Manganese, max / Heat analysis / Product analysis | 0.90 / 0.98 | 0.90 / 0.98 | 0.90 / 0.98 |
| Silicon / Heat analysis / Product analysis | 0.15–0.40B / 0.13–0.45C | 0.15–0.40B / 0.13–0.45C | 0.05–0.30A / ... |
| Nickel / Heat analysis / Product analysis | 8.50–9.50 / 8.40–9.60 | 7.50–8.50 / 7.40–8.60 | 6.50–7.50A / ... |
| A Applies to both heat and product analyses. / B Silicon may be less than 0.15 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / C Silicon may be less than 0.13 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / D Columbium and niobium are interchangeable names for the same element and both names are acceptable for use in AISI specifications. | A Applies to both heat and product analyses. / B Silicon may be less than 0.15 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / C Silicon may be less than 0.13 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / D Columbium and niobium are interchangeable names for the same element and both names are acceptable for use in AISI specifications. | A Applies to both heat and product analyses. / B Silicon may be less than 0.15 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / C Silicon may be less than 0.13 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / D Columbium and niobium are interchangeable names for the same element and both names are acceptable for use in AISI specifications. | A Applies to both heat and product analyses. / B Silicon may be less than 0.15 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / C Silicon may be less than 0.13 %, provided total aluminum is 0.030 % or over, or provided acid soluble aluminum is 0.025 % or over. / D Columbium and niobium are interchangeable names for the same element and both names are acceptable for use in AISI specifications. |
Limits as specified in ASME SA-553/SA-553M. Where the standard sets different values by thickness or product analysis, each band is shown separately.
SA553 is normally specified for LNG and ethylene storage tanks, air-separation cold boxes, and cryogenic transport and fuel tanks.
We supply it cut to size by plasma, laser or waterjet, with edges machined or flame-cut to your drawing, and can deliver in the heat-treatment condition your fabrication procedure requires.
Quenched and tempered or normalized as specified, with impact testing at the service temperature of the grade carried out on each heat-treatment lot.
Full Charpy V-notch impact series at service temperature; EN 10204 3.1 / 3.2 mill test certificate; 9 % Ni plate supplied with qualified welding procedure support; UT to EN 10160 and PWHT simulation on request
Seaworthy packing — bottom skids, steel strapping, VCI film and edge protection — is standard for sea freight. Container loading plans with piece weights are issued before shipment.
Send the grade or the standard you specify, the thickness range, quantity and destination port. We reply with price, lead time, delivery term and the applicable certificate within 12 hours (Mon–Sat, GMT+8).
