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ISO/TR 15608 ISO/TR 15608 Material Group 9.1

ISO/TR 15608 Group 9.1 : Nickel alloy steels with Ni ≤ 3,0 %

Nickel alloy steels ISO/TR 15608 Material Group 9.1 for Cryogenic and Low-Temperature Service

Low-temperature steels generally refer to steels applied below 0℃. The addition of Mn, Ni and other alloying elements can reduce interstitial impurities, refine grain, control the size, shape and distribution of the second phase, etc., so as to reduce the Ductile – Brittle transition temperature of ferrite steel. Alloying elements in low temperature steel mainly affect the low temperature toughness of steel. The low-temperature toughness of steel increased by Nickel is 5 times as much as that of manganese, and the brittle transition temperature decreased by about 10℃ for every 1% increase in nickel content, which is mainly due to the fact that nickel was not reacted with carbon and all dissolved into the solid solution to strengthen it.

Applications for ISO/TR 15608 Group 9.1

This material group retain adequate Charpy V-notch toughness, and thus high resistance to brittle fracture, even in the temperature range down to -105° C. This makes them the perfect choice for gas-liquefaction plants, for example, and for the transportation and storage of liquefied gases, such as LNG and LPG.

Name/GradeNumberStandardsProductRemarks/Trade Mark
11MnNi5-3
11MnNi5-3
1.6212
1.6212
EN 10028-4
EN 10216-4
Plate
Seamless tube
EN 13445-2 & 13480-2
EN 13445-2 & 13480-2
13MnNi6-3
13MnNi6-3
13MnNi6-3
1.6217
1.6217
1.6217
EN 10028-4
EN 10216-4
EN 10222-3
Plate
Seamless tube
Forging
EN 13445-2 & 13480-2
EN 13445-2 & 13480-2
EN 13445-2 & 13480-2
15NiMn6
15NiMn6
15NiMn6
LF5 Cl. 1
LF5 Cl. 2

1.6228
1.6228
K13050
K13050
ISO 9328-4
EN 10028-4
EN 10222-3
ASTM A-350
ASTM A-350

Plate
Forging
Forging
Forging

EN 13445-2 & 13480-2
EN 13445-2 & 13480-2
ASME BPVC
ASME BPVC
AK21703ASTM A-203PlateASME BPVC
7
7
K21903
K21903
ASTM A-333
ASTM A-334
Smls. & welded pipe
Welded tube
ASME BPVC
ASME BPVC
FR
WPR
9
9
WPL9
V
V, E
K22035
K22035
K22035
K22035
K22035
K22035
K22035
ASTM A-182
ASTM A-234
ASTM A-333
ASTM A-334
ASTM A-420
ASTM A-714
ASTM A-714
Forging
Fittings
Smls. & welded pipe
Welded tube
Piping fitting
Smls. & welded pipe
Smls. & welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
BK22103ASTM A-203PlateCryElso® 2.25
WC4J12082ASTM A-217CastingASME BPVC
G9Ni10
LC2
1.5636
J22500
EN 10213
ASTM A-352
Casting
Casting
EN 13445-2 & 13480-2
ASME BPVC
G20NiMoCr8-5-41.6570EN 10293Steel casting
G35CrNiMo6-61.6579EN 10293Steel casting
Table: Typical materials