The European powerful online platform with manufacturers and suppliers of pressure equipments​
pressure equipments plant

Select & Search

Please Select

ISO/TR 15608 Material Groups

ISO/TR 15608 Material Groups

ISO/TR 15608 Material Group 9.3

  • Nickel alloy steels

ISO/TR 15608 Material Group 9.3:
Nickel alloy steels with 8,0 < Ni ≤ 10,0 %

9Ni-steels for Cryogenic and Low-Temperature Service

Low-temperature steels generally refer to steels applied below 0℃. The addition of 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 9Ni-steels

This material group retain adequate Charpy V-notch toughness, and thus high resistance to brittle fracture, even in the temperature range down to -196° 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.

Welding of 9Ni-steels

The characteristic properties of welding consumables for welding Low-Temperature steels is their deformation capacity at low temperatures, which is usually tested using the notched bar impact bending test. The value of the impact energy is used to draw conclusions about the tendency to brittle fracture and the suitability for use up to a certain temperature. When welding at low temperature steels, attention must be paid to controlled heat input in order to keep the heat-affected zone as narrow as possible and still avoid hardening peaks.

The 9% Ni steel is mainly joined with nickel-based filler metals. These nickel-based types have advantages over conventional austenites. Due to a higher yield strength and the possibility of heat treatment of welded joints. They can also be used for steels with a low nickel content. With limited mixing with the base material, crack resistance and sufficient cold toughness down to -200°C are ensured.

EN 13445: Cryogenic and low-temperature steels

Name/GradeNumberStandardsProductRemarks/Trade Marks
X8Ni9+NT640
X8Ni9+QT640
X8Ni9+QT680
X8Ni9		1.5662
1.5662
1.5662
1.5662		EN 10028-4
EN 10028-4
EN 10028-4
EN 10222-3		Plate
Plate
Plate
Forging		EN 13445-2 & EN 13480-2
EN 13445-2 & EN 13480-2
EN 13445-2 & EN 13480-2
EN 13445-2 & EN 13480-2
X10Ni9
X10Ni9+QT
X10Ni9+QT		1.5682
1.5682
1.5682		EN 10216-4
EN 10216-4
EN 10253-2		Seamless tube
Seamless tube
Fittings		EN 13445-2 & EN 13480-2
EN 13445-2 & EN 13480-2
EN 13445-2 & EN 13480-2
II
II		K71340
K71340		ASTM A- 522
ASTM A-533		Forging
Plate		ASME BPVC
ASME BPVC
X7Ni9
8
WPL8
I
I		1.5663
K81340
K81340
K81340
K81340		EN 10028-4
ASTM A-333
ASTM A-420
ASTM A-522
ASTM A-553		Plate
Welded tube
Fitting
Forging
Plate		EN 13445-2 & EN 13480-2
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC / CryElso® 9Q
LC3J31550ASTM A-352CastingASME BPVC
LC4J41500ASTM A-352CastingASME BPVC
Table: Typical materials

Material Group 73

  • Malleable cast irons

Material Group 73 ISO/TR 15608: Malleable cast irons (unalloyed and low-alloyed);

Malleable cast iron

Malleable cast iron has been a reliable type of cast iron with a low silicon content. In the state of casting the whole amount of carbon is bound as carbide to the iron. The breaking structure is white and the material is brittle. This is called “malleable rough cast”. Malleable cast iron is given its final qualities by heat treatment. If the material is completely decarburised, we speak of “white malleable cast iron”, whereas it is called ‚black malleable cast iron’ if a certain amount of carbon remains in the material.

The material’s mechanical qualities are better than those of standard grey cast iron. White malleable cast iron is also well weldable.

Typical materials in group 73

NameNumberStandardsRemarks
EN-GJMB 300-6EN-JM1110EN 1562
EN 12516-4
EN-GJMB 350-10EN-JM1130EN 1562
EN 12516-4
EN-GJMB-450-6EN-JM1140EN 1562
EN-GJMB-500-5EN-JM1150EN 1562
EN-GJMB-550-4EN-JM1160EN 1562
EN-GJMB-600-3EN-JM1170EN 1562
EN-GJMB-650-2EN-JM1180EN 1562
EN-GJMB-700-2EN-JM1190EN 1562
EN-GJMB-800-1EN-JM1200EN 1562
Table: Typical materials

Material Group 22.2

  • Al-Mg-alloys

ISO/TR 15608 Material Group 22.2 such as Aluminium AW-5005 alloy :
Non heat treatable aluminium-magnesium-alloys with Mg ≤ 1,5 %

Features of Aluminium AW-5005 alloy

Compared to unalloyed aluminum, this material exhibits increased strength and high-temperature strength (due to the recrystallization-inhibiting effect of manganese). Al-Mn alloys are easy to form and good for welding. The alloys are atmospheric corrosion resistant, have moderate/high strength, and are not hardenable (by heat treatment). 5005 aluminum material is a medium-strength aluminum alloy material and it has good formability.

This alloys are almost only used as a wrought alloy and is processed into sheets or profiles by rolling or extrusion processes. H34 – Stabilised – A low temperature thermal treatment or heat introduced during manufacture which stabilises the mechanical properties and relieves residual internal stress, plus usually improves ductility.

Applications for using Aluminium AW-5005 alloy

The performance of 5005 aluminum alloy is similar to that of 3 series 3003 aluminum alloy, with moderate strength, good fusion, workability and formability,. This makes it an ideal material for a variety of construction and engineering projects that require continuous exposure to high temperatures such as thermal processing lines.

Table: Weldability and pressurised applications for aluminium alloy materials group 22.2 in acc. to EN 1392:

MaterialConditionWeldabilityApplicationmin./max.
Working Temp.
EN AW-5005O/H111
H112		yesPressure Vessel, Piping
Pressure Vessel, Piping		-273/200 °C
EN AW-5005AO/H111
H112		yesPressure Vessel, Piping
Pressure Vessel, Piping		-273/200 °C
EN AW-5050O/H111
H112		yesPressure Vessel, Piping
Pressure Vessel, Piping		-273/200 °C

Typical materials in group 22.2

NameNumberStandardProductsRemarks
EN AW‑AlMg1(B)
EN AW‑AlMg1(B)
EN AW‑AlMg1(B)		EN AW-5005
EN AW-5005
EN AW-5005		EN 485
EN 754
EN 755		Plate, sheet, stripe
Cold drawn rod/bar and tube
Extruded rod/bar, tube		EN 13445-8 & EN 13480-8
EN 13445-8 & EN 13480-8
EN 13445-8 & EN 13480-8
EN AW-AlMg1(C)
EN AW-AlMg1(C)
EN AW-AlMg1(C)		EN AW-5005A
EN AW-5005A
EN AW-5005A		EN 485
EN 754
EN 755		Plate, sheet, stripe
Cold drawn rod/bar and tube
Extruded rod/bar, tube		EN 13445-8 & EN 13480-8
EN 13445-8 & EN 13480-8
EN 13445-8 & EN 13480-8
EN AW-AlMg1,5(C)EN AW-5050EN 485Plate, sheet, stripeEN 13445-8 & EN 13480-8
3004A93004ASTM B-209PlateASME BPVC
5050A95050ASTM B-209PlateASME BPVC
Table: Typical materials

Material Group 47

  • Ni-Fe-Cr-Cu alloys

ISO/TR 15608 Material Group 47:
Nickel-iron-chromium-copper alloys (Ni-Fe-Cr-Cu) with Ni ≥ 45 %

Typical materials in group 47

NameNumberStandardProductAlloy/BrandRemarks
NiCr20Fe18MoN06950––HASTELLOY® G-50®EN 13445-10: PMA
NiCr22Mo7Cu12.4619
N06985		EN 10302–INCONEL® G-3
Nicrofer 4023hMo		EN 13445-10: PMA
1 see also Material Group 43

ISO/TR 15608 Material Group 7.2

  • Martensitic stainless steels

ISO/TR 15608 Material Group 7.2: Martensitic stainless steels with C ≤ 0,35 % and 10,5 % ≤ Cr ≤ 30 %;

Martensitic stainless steels are similar to low alloy or carbon steels. In the annealed condition they have a structure similar to the ferritics, but when hardened they have a ‘body-centred tetragonal’, (bct), crystal lattice, rather than a body centred cubic, (bcc), lattice. Due to the deliberate addition of carbon, they can be hardened and strengthened by heat treatment, in a similar way to many carbon/carbon alloy steels. They are classed as a “hard” ferro-magnetic group. The main alloying element is chromium, with a typical content of 12-15%.

Martensitic grades have been developed with nitrogen and nickel additions, but with lower carbon levels than the traditional grades. These steels have improved toughness, weldability and corrosion resistance.

1.4313 and 1.4418. These low carbon martensitic grades have the benefit of being more weldable than other martensitic grades. Poor weldability is normally seen as a downside of martensitic steels due to their generally high carbon content, which requires pre and post heat treatment in welding. These steels are much better in this respect.

Typical materials in group 7.2

1Name/GradeNumberStandardProductRemarks
F6a, Cl. 1
F6a, Cl. 2
F6a, Cl. 3
F6a, Cl. 4
410
TP410
410
F6
410		S41000
S41000
S41000
S41000
S41000
S41000
S41000
S41000
S41000		ASTM A-182
ASTM A-182
ASTM A-182
ASTM A-182
ASTM A-240
ASTM A-268
ASTM A-276
ASTM A-336
ASTM A-479		Forging
Forging
Forging
Forging
Plate
Smls. & welded tube
Bar
Forging
Bar		ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
X2CrNi12
40		1.4003
S41003		EN 10028-7
ASTM A-1010		Plate
Plate		–
ASME BPVC
410SS41008ASTM A-240PlateASME BPVC
F6bS41026ASTM A-182ForgingASME BPVC
414S41400ASTM A-479BarASME BPVC
F6NM
S41500
S41500
S41500
S41500
–		S41500
S41500
S41500
S41500
S41500
S41500		ASTM A-182
ASTM A-240
ASTM A-268
ASTM A-479
ASTM A-731
ASTM A-815		Forging
Plate
Smls. & welded tube
Bar
Smls. & welded pipe
Fittings		ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
F429
429
TP429		S42900
S42900
S42900		ASTM A-182
ASTM A-240
ASTM A-268		Forging
Plate
Smls. & welded tube		ASME BPVC
ASME BPVC
ASME BPVC
CA15
CA15 Cl. C		J91150
J91150		ASTM A-217
ASTM A-487		Casting
Casting		ASME BPVC
ASME BPVC
CA15M Cl. AJ91151ASTM A-487CastingASME BPVC
CA15 Cl. B
CA15 Cl. D		J91171
J91171		ASTM A-487
ASTM A-487		Casting
Casting		ASME BPVC
ASME BPVC
CA6NM
CA6NM Cl. A
CA6NM Cl. B		J91540
J91540
J91540		ASTM A-352
ASTM A-487
ASTM A-487		Casting
Casting
Casting		ASME BPVC
ASME BPVC
ASME BPVC
X3CrNi13-41.4313EN 10222-5ForgingEN 13445-2 & EN 13480-2
X4CrNiMo16-5-11.4418EN 10272BarEN 13445-2 & EN 13480-2
Table: Typical materials

Material Group 46

  • Ni-Cr-Co alloys

ISO/TR 15608 Material Group 46 such as alloy 617:
Nickel-chromium-cobalt alloys (Ni-Cr-Co) with Ni ≥ 45 % and Co ≥ 10 %

Features of Nickel-chromium-cobalt alloys such as Alloy 617

These alloys are solid-solution-strengthened nickel-cobalt-chromium-silicon alloys with outstanding resistance to various forms of high-temperature corrosion attack. They have an excellent resistance to sulfidation and chloride attack in both reducing and oxidizing atmospheres. The alloys also have exceptionally good resistance to oxidation, hot corrosion, carburisation, metal dusting, nitridation, and corrosion attack by low melting point compounds such as those formed by phosphorus, vanadium, and other impurities.

The combination of high strength and oxidation resistance at temperatures over 980°C makes Alloy 617 an attractive material for such components as ducting, components of power-generating plants, combustion cans, and transition liners in both aircraft and land-based gas turbines. That characteristic, combined with good resistance to oxidizing and carburizing atmospheres, makes the alloy especially suitable for long-term, high-stress use at elevated temperatures. Alloy 617 has excellent weldability.

Applications of Nickel-chromium-cobalt alloys

The alloys are especially suited for applications in high temperature corrosive environments generated by combustion of low grade fuels or processing of chemical feed stocks with corrosive contaminants such as sulfur, chlorine, fluorine, vanadium, phosphorus, and others. The alloys are capable of withstanding temperatures up to 1200 °C.  It is widely used in recuperators, heat exchangers and waste heat recovery systems. Alloys are also suitable for utility boilers, sulfur plants, high-temperature furnaces, kilns, calciners, resource recovery units, cement kilns, pulp and paper recovery boilers, coal gasification systems, and fluidized-bed combustion systems.

Typical materials in group 46

Name / GradeNumberStandardProductAlloy/TrademarkRemarks
NiCr20Co18Ti
–		2.4632
N07090		–
–		–
–		NIMONIC® Alloy 90EN 13445-10: PMA
–
NiCo20Cr20MoTi
–		2.4650
N07263		–
–		–
–		NIMONIC® Alloy 263
Nicrofer 5020CoTi		EN 13445-10: PMA
–
NiCr20Co13Mo4Ti3Al
–		2.4654
N07001		EN 10269
–		Fasteners/Bar
–		HAYNES® Waspalloy alloyEN 13445-2/-10
–
NiCr23Co12Mo
–
–
–
–		2.4663
N06617
N06617
N06617
N06617		EN 10302
ASTM B-166
ASTM B-167
ASTM B-168
ASTM B-564		–
Bar
Smls. pipe & tube
Plate
Forging		INCONEL® Alloy 617
Nicrofer 5220Co		EN 13445-10: PMA
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr25Co20TiMo2.4878––––
NiCo29Cr28Si
–
–
–
–
–
–
–		2.4880
N12160
N12160
N12160
N12160
N12160
N12160
N12160		–
ASTM B-366
ASTM B-435
ASTM B-564
ASTM B-572
ASTM B-619
ASTM B-622
ASTM B-626		–
Fittings
Plate
Forging
Rod
Welded pipe
Smls. pipe & tube
Welded tube		–
HAYNES®
HR-160®
alloy		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
Table: Typical materials

Material Group 45

  • Ni-Fe-Cr alloys

ISO/TR 15608 Material Group 45 such as alloy 825:
Nickel-iron-chromium alloys (Ni-Fe-Cr) with Ni ≥ 31 %

Nickel-Iron-Chromium alloys composition such as alloy 825

The high nickel content is sufficient for resistance to chloride-ion stress-corrosion cracking. The nickel, in conjunction with the molybdenum and copper, also gives outstanding resistance to reducing environments such as those containing sulfuric and phosphoric acids. As an austenitic, nickel-base alloy, the material is ductile over a wide range of temperatures from cryogenic to well in excess 538°C . Fabricability is typical nickel-base alloys, with the material readily formable and weldable by a variety of techniques.

Applications of Nickel-Iron-Chromium alloys such as alloy 825

The main applications are chemical processing, pollution control, oil and gas recovery, acid production, pickling operations also for

  • pipes, tubes and fittings in the oil and gas extraction, e. g. in heat exchangers, evaporators, washers, immer- sion pipes in sea water cooled heat exchangers, offshore piping 
  • Components in sulfuric acid pickling plants like heating coils, vessels, boilers, baskets and chains 
  • Heat exchangers, evaporators, washers, immersion pipes in phosphoric acid production 
  • Food industry 

Alloy 825: High Corrosion Resistance

Nickel-Iron-Chromium alloys have a high level of corrosion resistance. In both reducing and oxidize environments, the alloy resists general corrosion, pitting, crevice corrosion, intergranular corrosion, and stress-corrosion cracking.

Typical materials in group 45

NameNumberStandardProductAlloy/Trade MarkRemarks
X2NiCrAITi32-1011.4558EN 10216-5Smls. tubesEN 13445-2/-10
X10NiCrAITi32-20
–
–
–
–
–
–
–
–		1.4876
N08800
N08800
N08800
N08800
N08800
N08800
N08800
N08800		EN 10028-7
ASTM B-163
ASTM B-366
ASTM B-407
ASTM B-408
ASTM B-409
ASTM B-514
ASTM B-515
ASTM B-564		Plate
Smls. tubes
Fitting
Smls. pipe & tube
Bar
Plate
Welded pipe
Welded tube
Forging		INCOLOY® alloy 800
VDM® Alloy 800
EN 13445-2/-10
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
–N08801ASTM B-163Seamless tubealloy 801
X5NiCrAlTi31-20
X5NiCrAlTi31-20
–
–
–
–
–
–
–		1.4958
1.4958
N08810
N08810
N08810
N08810
N08810
N08810
N08810		EN 10028-7
EN 10216-5
ASTM B-163
ASTM B-407
ASTM B-408
ASTM B-409
ASTM B-514
ASTM B-515
ASTM B-564		Plate
Smls. tubes
Smls. tube
Smls. pipe & tube
Rod & bar
Plate
Welded pipe
Welded tube
Forging
INCOLOY® alloy 800H
Nicrofer® 3220H		EN 13445-2/-10
EN 13445-2/-10
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
X8NiCrAlTi32-21
X8NiCrAlTi32-21
X8NiCrAlTi32-21
–
–
–
–
–
–		1.4959
1.4959
1.4959
N08811
N08811
N08811
N08811
N08811
N08811		EN 10028-7
EN 10216-5
EN 10217-7
ASTM B-163
ASTM B-407
ASTM B-408
ASTM B-409
ASTM B-515
ASTM B-564		Flat products
Smls. tube
Welded tube
Smls. tube
Smls. pipe and tube
Rod & Bar
Plate
Welded tube
Forging		INCOLOY® alloy 800HT
Nicrofer® 3220HP		EN 13445-2/-10
EN 13445-2/-10
EN 13445-2
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr20CuMo
–
–
–
–
–
–
–		2.4660
N08020
N08020
N08020
N08020
N08020
N08020
N08020		–
ASTM B-366
ASTM B-462
ASTM B-463
ASTM B-464
ASTM B-468
ASTM B-473
ASTM B-729		–
Fittings
Forgings
Plate
Welded pipe
Welded tube
Bar
Smls. pipe & tube		–
INCOLOY® alloy 020
VDM® Alloy 20		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr30FeMo
–
–
–
–
–
–
–		2.4603
N06030
N06030
N06030
N06030
N06030
N06030
N06030		–
ASTM B-366
ASTM B-462
ASTM B-581
ASTM B-582
ASTM B-619
ASTM B-622
ASTM B-626		–
Fittings
Forgings
Rod
Plate
Welded pipe
Smls. pipe & tube
Welded tube		–
HASTELLOY® G-30 alloy		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr28FeSiCe
–
–
–
–
–
–
–
–		2.4889
N06045
N06045
N06045
N06045
N06045
N06045
N06045
N06045		EN 10095
ASTM B-166
ASTM B-167
ASTM B-168
ASTM B-366
ASTM B-462
ASTM B-516
ASTM B-517
ASTM B-564		–
Rod and bar
Smls. pipe & tube
Plate
Fittings
Forgings
Welded tube
Welded pipe
Forging		–
Nicrofer® 45 TM		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr22Mo7Cu
–
–
–
–
–
–		2.4619
N06985
N06985
N06985
N06985
N06985
N06985		–
ASTM B-366
ASTM B-581
ASTM B-582
ASTM B-619
ASTM B-622
ASTM B-626		–
Fittings
Rod
Plate
Welded pipe
Smls. pipe & tube
Welded tube		–
HASTELLOY® G-3 alloy		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr21Mo
–
–
–
–
–
–
–
–		2.4858
N08825
N08825
N08825
N08825
N08825
N08825
N08825
N08825		VdTÜV 432/1
ASTM B-163
ASTM B-366
ASTM B-423
ASTM B-424
ASTM B-425
ASTM B-564
ASTM B-704
ASTM B-705		Plate
Smls. tube
Fitting
Smls. pipe & tube
Plate
Rod & bar
Forgings
Welded tube
Welded pipe		–
INCOLOY® alloy 825		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
–N08024
N08024
N08024		ASTM B-463
ASTM B-464
ASTM B-468		Plate
Welded pipe
Welded tube		–ASME BPVC
ASME BPVC
ASME BPVC
–N08026
N08026
N08026		ASTM B-463
ASTM B-464
ASTM B-468		Plate
Welded pipe
Welded tube		–ASME BPVC
ASME BPVC
ASME BPVC
X1NiCrMoCu32-28-7
–
–
–
–
–
–
–
–		1.4562
N08031
N08031
N08031
N08031
N08031
N08031
N08031
N08031		–
ASTM B-366
ASTM B-462
ASTM B-564
ASTM B-581
ASTM B-619
ASTM B-622
ASTM B-625
ASTM B-626		–
Fittings
Forging
Forging
Rod
Welded pipe
Smls. pipe & tube
Plate
Welded tube		–
VDM® Alloy 31		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
X1NiCrMoCu31-27-4
X1NiCrMoCu31-27-4
X1NiCrMoCu31-27-4
X1NiCrMoCu31-27-4
X1NiCrMoCu31-27-4
X1NiCrMoCu31-27-4
–
–		1.4563
1.4563
1.4563
1.4563
1.4563
1.4563
N08028
N08028		EN 10028-7
EN 10272
EN 10216-5
EN 10216-5
EN 10217-7
EN 10253-4
ASTM B-668
ASTM B-709		Plate
Bar
Seamless tube
Seamless tube
Welded tube
Fittings
Seamless tube
Plate		VDM® Alloy 28EN 13445-2
EN 13445-2
EN 13445-2
EN 13445-2
EN 13445-2
EN 13445-2
ASME BPVC
ASME BPVC
NiFe33Cr25Co
–
–
–
–
–
–
–
–		2.4854
N08120
N08120
N08120
N08120
N08120
N08120
N08120
N08120		–
ASTM B-163
ASTM B-366
ASTM B-407
ASTM B-408
ASTM B-409
ASTM B-514
ASTM B-515
ASTM B-564		–
Seamless tube
Fitting
Smls. pipe & tube
Rod & bar
Plate
Welded pipe
Welded tube
Forging		–
HAYNES® HR-120® alloy
VDM® Alloy N08120		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
CT15CN08151ASTM A-351CastingASME BPVC
HT30N08603ASTM A-351CastingASME BPVC
X12NiCrSi35-16
–
–
–
–
–		1.4864
N08330
N08330
N08330
N08330
N08330		EN 10095
ASTM B-366
ASTM B-511
ASTM B-535
ASTM B-536
ASTM B-710		–
Fitting
Bar and shape
Smls. pipe & tube
Plate
Welded pipe		–
VDM® Alloy 330		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
NiCr19Fe19Nb5Mo3
–
–
–		2.4668
N07718
N07718
N07718		DIN 17744
ASTM B-637
ASTM B-670
ASTM B-906		Plate
Rod & bar
Plate
Plate		–
INCONEL® Alloy 718
VDM® Alloy 718
Nicrofer® 5219 Nb		–
ASME BPVC
ASME BPVC
ASME BPVC
CU5MCuCN08826ASTM A-494CastingAlloy 826ASME BPVC
X1CrNiMoCuN33-32-1
–
–
–
–
–
–
–		1.4591
R20033
R20033
R20033
R20033
R20033
R20033
R20033		–
ASTM B-366
ASTM B-462
ASTM B-564
ASTM B-619
ASTM B-622
ASTM B-625
ASTM B-649		–
Fitting
Forging
Forging
Welded pipe
Smls. pipe & tube
Plate
Bar		–
VDM® Alloy 33		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
X10CrNiCoMoN22-20-18
–
–
–
–
–		1.4883
R30556
R30556
R30556
R30556
R30556		–
ASTM B-366
ASTM B-572
ASTM B-619
ASTM B-622
ASTM B-626		–
Forging
Rod
Welded pipe
Smls. pipe & tube
Welded tube		–
HAYNES® 556® alloy		–
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
1 see also Material Group 8.2

Material Group 23.2

  • Al-Zn-Mg alloys

Material Group 23.2 ISO/TR 15608:
Heat treatable aluminium-zinc-magnesium alloys.

7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloys. Most 7000 series alloys include magnesium and copper as well.

Features of EN AW-7020 alloy

EN AW-7020 is a typical alloy (Cu-free) in this Al-Zc-Mg alloy material group. Generally Al-Zc alloys are precipitation-hardened aluminium alloys. They are commonly available in pre-tempered grades such as 7020-T6 with specified yield strength Rp0,2 > 290 MPa (T6).

The most common temper heat treatment (description in EN 515) for 7020 aluminium is:
T4: Naturally aged to a stable condition
T6: Solution heat treated, quenched and artificially aged

EN AW-7020 material is weldable by standard techniques. The alloy exhibits a good recovery of mechanical properties after welding, approaching the original values of the base metal (depending on welding conditions). These properties can be achieved after natural aging for a prolonged period or after an additional artificial aging treatment.

In Al-Zn-Mg alloys(Cu-free) , strength in the heat effect zone (HAZ) is reduce due to the re-solution of the precipitates. In this case, natural or preferred weldable EN AW-7020 offers unique possibilities due to

  • large solid solution range from 350-500°C
  • low quench rate sensitivity
  • significant age-hardening effect at room temperature

The HAZ reaches the original strength after 90 days of natural ageing.

Note: EN AW-7075 materials with copper can only be welded to a limited extent or not at all (risk of hot cracking).

Applications of EN AW-7020 alloy

Typical applications are highly loaded construction parts and hydraulic applications in acc. to EN 1392 “Aluminum and aluminum alloys – Wrought and cast products – Particular requirements for products for the fabrication of pressure equipment” see table below.
According to EN 602, the use of the EN AW-7020 material is NOT allowed the contact with food.

Table: Weldability and pressurised applications for aluminium alloy material group 23.2 in acc. to EN 1392:

MaterialCondition 1WeldabilityApplicationmin./max.
Working Temp.
EN AW-7075T73Noonly hydraulic applications-273/160 °C
1 In the “Material condition” column, T4 also applies to T451, T4511, T4510 etc. Similar extensions apply to the material states T3, T6, T73 and T8.

Typical materials in group 23.2

NameNumberStandardProductRemark
EN AW-AlZn4,5Mg1,5MnEN AW-7005
EN AW-7005
EN AW-7005		EN 485-2
EN 754-2
EN 755-2		Plate
Cold drawn rod/bar and tube
Extruded rod/bar, tube		EN 13445-8: No
EN 13445-8: No
EN 13445-8: No
EN AW-AlZn4,5Mg1EN AW-7020
EN AW-7020
EN AW-7020		EN 485-2
EN 754-2
EN 755-2
Plate
Cold drawn rod/bar and tube
Extruded rod/bar, tube		EN 13445-8: No
EN 13445-8: No
EN 13445-8: No
EN AW-AlZn5,5MgCu
EN AW-AlZn5,5MgCu
EN AW-AlZn5,5MgCu		EN AW-7075
EN AW-7075
EN AW-7075		EN 485
EN 754
EN 755		Plate, sheet, stripe
Cold drawn rod/bar and tube
Extruded rod/bar, tube		not weldable
not weldable
not weldable
Table: Typical materials

Material Group 26

  • Al-Cu cast alloy

Material Group 26 ISO/TR 15608:
Aluminium-cooper cast alloys with 2 % < Cu ≤ 6 %

Aluminium-cooper cast alloys (Al-Cu) cast alloys

These alloys contain about 4% copper and small amounts of other additives that improve castability, including titanium and magnesium. The AlCu cast alloys are prone to hot cracking and are used in different hardening states. Aluminum-copper cast alloys exhibit very poor casting properties and require more careful design of casting molds to obtain a good casting.

Typical materials in group 26

NameNumberStandardProductUNS
EN AC-AICu4MgTiEN AC-21000EN 1706Castings
EN AC-AICu4TiEN AC-21100EN 1706Castings
Table: Typical materials

ISO/TR 15608 groups materials according to their similar properties such as chemical composition, weldability and mechanical properties. However, it can also be used for other applications such as NDE, forming or heat treatments.

Material assigned to a group in ISO/TR 20172 (European Materials), ISO/TR 20173 (American Materials) and ISO/TR 20174 (Japanese Materials) should considered to those groups.

ISO/TR 15608 material groups reduces the number of welding procedure qualifications (WPQR) e.g. ISO 15614-1. One WPQR is required for a single material group, whereby this material group can contain several specific materials (see tables below). For example, A WPQR with a material from subgroup 1.2 includes all materials from the subgroup 1.1

ISO/TR 15608 is included in many codes and standards so that this simplification of welding qualifications can be used there e.g. EN 13445-2, EN 13480-2, AD 2000, PD 5500, EN 1092-2, ISO 9606-1 to 5.

ASME BPVC Section X has a similar group classification (P-number), but cannot be adopted 1:1. The American system similarly classifies materials into groups, however ASME BPVC Sect. IX in QW422 explicitly classifies grades of materials to groups and not on the chemical composition and mechanical properties such as is the case with ISO/TR 15608.

Browsing
vendor-directory

Pressure Equipment Manufacturer and Supplier Directory​

Vendor entries are free

Simple Vendor Registration in 3 Steps

Vendor Registration

DIRECTORY

for
Manufacturers & Suppliers
Features:
  • Link directly to your Website
  • Company type
  • Location
  • Brief description of your company
  • Products limits dia., length & weight
  • Main used mat'l groups ISO/TR 15608
  • Directory is supported by professional Engineers
Vendor registration
Reach out to the prospects globally

With an entry in the user-friendly PED Directory, you present your company to thousands of potential customers interested in the pressure equipment sector.

With our clearly designed entries, you can present your company professionally.

For free

Simple registration in 3 steps:

  1. Registration only with name, e-mail, company name,
  2. Approval and sending login data by PED directory team
  3. The vendor sends the prepared form with the details for the vendor directory listing

FAQs 
for Manufacturer/Suppliers

Yes, entries for any product categories are free.

No, the period can be agreed for a fixed term without a subscription.

After finding your interested manufacturer, you can contact him by clicking the Link on LOGO or Company Name