Steel Division

aldur®

Areas of application

Our high-strength, water-quenched aldur® steels are used wherever weight savings and operating safety are in demand at low temperatures. Examples are welded structures under high levels of stress in crane and vehicle construction, in mining equipment and pressure piping. We also supply hot-formed chords for jack-up rigs and lift boats in offshore applications.

Advantages

  • Weight savings are achieved through high strength in conventional structural steels that lead to higher useful loads in crane and vehicle construction and less expensive structures. 
  • Excellent weldability results from low C equivalents with high cold cracking resistance in the heat-affected zone, lower preheating temperatures. High levels of component safety are achieved by toughness in the welded joint.

Steel grades: Special voestalpine grade 
  • aldur 500 Q, QL, QL1 
  • aldur 550 Q, QL, QL1 
  • aldur 620 Q, QL, QL1 
  • aldur 700 Q, QL, QL1 
  • aldur 900 Q, QL 
  • aldur 960 Q, QL 
Dimensions: Plate thickness: 
  • for aldur 500-700 Q, QL, QL1: 12-110 mm 
  • for aldur 900 Q, QL: 30-60 mm 
  • for aldur 960 Q, QL: 30-50 mm 
Plate width: 
  • for aldur 500 and 550 Q, QL, QL1: 3,800 mm max. 
  • for aldur 620 and 700 Q, QL, QL1: 3,000 mm max. for d = 12–20 mm 3,800 mm max. for d = 20–100 mm 
  • for aldur 900 and 960 Q, QL: 2,500 mm max. 
Plate length: 
  • 13,200 mm max. for aldur 700 Q, QL, QL1 16,000 mm max. for d = 12-30 mm 
 Ordered weight: 
  •  At least 20 tons per line item Unit weight: 14.8 tons max. per single plate 

Toughness: Three grade categories are available: 

  • Base grade Q    –20 °C (Design temperature)
  • Cryogenic grade QL    –40 °C 
  • Special cryogenic grade QL1    –60 °C

Jack-up-Rig

Chords

High-strength heavy plates are found in offshore platform applications. We use a special tool in the head press shop to hot-form parts used in offshore platforms.

Support and anchoring system

Offshore platforms are supported by adjustable feet. During ocean transport, the feet are retracted and point upwards. At the designated location, the stands are extended until they reach the sea floor. Chords made by voestalpine Grobblech strengthen the gear racks of the feet and allow safe operation in rough conditions.

Complex manufacturing process

We developed our manufacturing technology for chords as hot-formed parts in our in-house press shop. The pre-material is heavy plate of high-strength fine-grained structural steel from our own rolling mill. Strips are cut from this plate and formed into chords with a special tool on a hydraulic press with a maximum pressing force of 3,500 tons. The tool function is based on finite-element calculations and guarantees a high degree of accuracy to shape. After being hot-formed, the chords are water-quenched and straightened. The edges are flame-cut and milled on both the side and end faces.

Steel grade: aldur 700 QL1, S690 QL1, AB EQ/FQ70, VL E/F690

Dimensions: Lengths up to 4,200 mm, wall thickness of 120 mm, diameter 670 mm


Stahlbrücke Tulln

Structural steel plates

Our standard structural steels are found in applications in steel construction, bridge building, production facilities, vehicle construction and wind towers.
Our weather-resistant structural steels are frequently used in bridge building and provide benefits such as reduced maintenance costs.

Our standard structural steels are found in applications in steel construction, bridge building, production facilities, vehicle construction and wind towers.

Our weather-resistant structural steels are frequently used in building bridges and provide benefits such as reduced maintenance costs.

We supply

  • Special plate dimensions, including thicknesses of up to 300 mm and widths of up to 3,950 mm.
  • Our high-quality steels feature narrow analysis limits, low variation in mechanical-technological characteristics, compliance with Z tests and US tests of all classes.
  • Our steels demonstrate the best processing properties during welding, edging and cutting.

Steel grades

       Steel group

 Standard grades   

       Steel grades

Unalloyed structural steels

EN 10025-2:

S235 JR+AR, JR+N, J0+AR, J0+N, J2+AR, J2+N;

S275 JR+AR, JR+N, J0+AR, J0+N, J2+AR, J2+N;

S355 JR+AR, JR+N, J0+AR, J0+N, J2+AR, J2+N, K2+AR, K2+N;

Normalized-rolled/normalized fine-grained structural steels

EN 10025-3

S275N, NL;

S355N, NL;

S420N, NL;

S460N, NL;

Thermomechanically rolled fine-grained structural steel

EN 10025-4

S275M, ML;

S355M, ML;

S420M, ML;

S460M, ML;

Weather-resistant structural steels

EN 10025-5

S355 J2W+AR,

S355 J2W+N; 

S355 K2W+AR,

S355 K2W+N;

Structural steels

ASTM/ASME

(S)A 36

(S)A 283 Grade C

(S)A 572 Grade 50 Type 1

Weather-resistant structural steels

ASTM/ASME

(S)A 588 Grade A

Dimensions

Plate thickness

8–200 mm (dependent on steel grade; up to 300 mm upon request)

Plate width

3,950 mm max. (dependent on thickness and steel grade)

Plate length

18,700 mm max. (dependent on thickness and steel grade; up to 24,000 mm available upon request)

Ordered weight 

At least 20 tons per line item

Unit weight

20.5 tons max. per single plate (dependent on steel grade)


Formenbau

Heavy plates made of case-hardening and heat-treatable steels

Case-hardening and heat-treatable steels are usually heat-treated following final processing at the customer in order to unfold their final properties. Typical areas of application are in making tools and molds.

Case-hardening and heat-treatable steels are usually heat-treated following final processing at the customer in order to unfold their final properties. Typical areas of application are in making tools and molds (e.g. for concrete blocks).

Steel grades

Heat-treatable steels

according to EN 10083:

C45, C45+N, C45E, C45E+N, C45E+QT, 42CrMo4

Case-hardening steels

according to EN 10084:

16MnCr5, 20MnCr5

          

Dimensions:

Plate thickness:  

10–150 mm (dependent on steel grade)

Plate width:

3,950 mm max. (dependent on thickness and steel grade;

widths of up to 3,800 mm for Q+T)

Plate length:

18,700 mm max. (dependent on thickness and steel grade;

lengths of up to 13,200 mm for Q+T)

Ordered weight:   

At least 2 tons per line item

Unit weight:

11.7 tons max. per single plate


Förderplattform

Offshore plates

Whether in the Gulf of Mexico, in the North Sea or the Arctic, our thermomechanically rolled structural steels for the offshore industry are in use worldwide.

Applications under the harshest conditions

We deliver high-quality offshore structural steels and thermomechanically rolled shipbuilding plates for drilling platforms, oil platforms and jack-up rigs. These steels are also used in foundations for offshore wind parks and floating production storage and offloading vessels (FPSOs). In addition, we are in a position to produce chords for the feet of jack-up rigs. We supply prequalified material with plate thicknesses of up to 101.6 mm and CTOD values down to -40 °C for applications in arctic regions (arctic steel). Our thermomechanically rolled offshore plates are characterized by a high degree of toughness and excellent weldability. The low degree of cold cracking and high degree of toughness in the welding seam make it possible for us to guarantee the highest safety standards in welded structures.

Steel grades

Compliant with EN 10225:

S355G5+M, S355G6+M, S355G7+M, S355G8+M, S355G9+M, S355G10+M

S355G2+N, S355G3+N, S355G7+N, S355G8+N

S420G1+M, S420G2+M

S460G1+M, S460G2+M

All TM grades available up to 101.6 mm, available prequalified according to Annex E

Compliant with API 2H:

API 2H-50N (normalgeglüht bis 100 mm)

Compliant with API 2W:

API 2W-50, API 2W-50T, API 2W-60 (available 101.6 mm prequalified according to API RP2Z)

Compliant with API 2 MT1:       

API 2 MT1

Dimensions

Plate thickness

6-130 mm (dependent on steel grade)

Plate width

3,850 mm max. (dependent on thickness and steel grade)

Plate length

18,700 mm max. (dependent on thickness and steel grade)

Unit weight

28.0 tons max. per single plate

Prequalified 

Our offshore structural steels are qualified before they are put into use: Our stringent testing procedures are implemented under operating conditions to inspect strength, toughness, and (most importantly) weldability. Tests are performed under the auspices of Lloyd's register. We supply our offshore plates in thicknesses up to 101.6 mm in steel grades up to S460G2+M, prequalified according to EN10225. We supply our offshore plates for arctic applications in steel grades up to API 2W-60 with guaranteed CTOD values down to -40°C, prequalified according to API RP2Z.


Plattiertes Rohr

Clad linepipe plates

We are the world's largest producer of roll-bonded clad linepipe plates. The highest sour-gas requirements are met by our roll-bonded clad linepipe plates with corrosion-resistant cladding.

Sour-gas-resistant linepipe plates

The sour gases occurring in the linepipes used for the transport of oil and gas are highly corrosive. Only the highest-quality materials are capable of withstanding this aggressive medium. As a leading provider of sour-gas-resistant linepipe plates worldwide, we supply linepipes with corrosion-resistant cladding for specific applications.

Protective cladding material

The base material is decisive in the production of linepipes. Our roll-bonded clad plates are extremely strong, tough and resistant to corrosion as a result of their cladding material. Materials such as our X65 product with nickel-based alloy 625 provide the optimum physical properties. Our pipe partners process these materials into metallurgically bonded clad linepipes.

Elements of the highest quality

The metallurgical bonding of the clad linepipes withstands the highest mechanical stress and dynamic loads, making the pipes especially suited to deep-sea applications under highly corrosive conditions.

Reeling and riser pipes 

  • Roll-bonded clad plates for pipelines 
  • High degree of corrosion resistance, even in sour-gas applications 
  • More efficient and cost-effective reeling of pipelines than with on-board welding 
  • Roll-bonded clad plates (SCR) for vertical pipelines (risers) 
  • Excellent properties of metallurgical bonded clad plates for highest degree of compression strength

Mobilkran

High-strength plates

High-strength plates made of fine-grained steel have a minimum yield strength of 620 and 700 MPa, and ultra-high-strength special grades achieve yield strengths of up to 1100 MPa.

Higher stresses

Machines and buildings are becoming ever larger. When you double the values of length, width and height of a component, the weight grows by a factor of 8, while the supporting cross-sectional area only grows by a factor of 4. This doubles the stress, which is calculated with the weight divided by the cross-sectional area. High-strength steels are capable of supporting these higher stresses and simultaneously lead to decreased weight of the component.

Specific advantages

The low weight of high-strength and ultra-high-strength heavy plates saves costs: The pre-material expenses, transport charges, and the assembly and foundation costs drop drastically. Add to that the costs saved during further processing of the material. Thanks to the excellent welding properties, work can proceed quickly and efficiently. On top of this, much less filler metal is required, and the weld seam test is simplified.

Our portfolio

We deliver high-strength heavy plates as fine-grained steels with a minimum yield strength of 620 and 700 MPa and ultra-high-strength heavy plates with a minimum yield strength of 900, 960 and 1100 MPa as special voestalpine grades.

  • alform plate 620 M – thermomechanically rolled, high-strength fine-grained steels
  • alform plate 700 M – thermomechanically rolled, high-strength fine-grained steels
  • aldur 700, 900 and 960 Q – quenched and tempered, high-strength fine-grained steel
  • alform plate 900 M x-treme – thermomechanically rolled, ultra-high-strength fine-grained steels
  • alform plate 960 M x-treme – thermomechanically rolled, ultra-high-strength fine-grained steels
  • alform plate 1100 M x-treme - thermomechanically rolled, ultra-high-strength fine-grained steels

Raffinerie

Pressure vessel plates

Our pressure-vessel steels are suitable for very high or very low temperatures and are characterized by special strength and wall thickness. We also supply them in sour-gas-resistant design upon request.

Optimized workability

Roll-bonded shell plates, heads and cones in plain-carbon steel from a single source means optimum processing for our customers. The base materials are ideally matched during production. The large range of steel grades cover a wide spectrum of application possibilities.

Boiler construction and apparatus engineering

Pressure-vessel steels made by voestalpine Grobblech GmbH are found in the equipment and boilers in the chemical and petrochemical industries. Creep-resistant pressure-vessel steels withstand even the highest temperatures in these areas of application. They are especially suited to use in hot-application pressure vessels

High-strength alloys

We supply high-strength CrMo- und CrMoV steels for the reduction of wall thicknesses in thick-walled pressure vessels. Our customers use the high-strength P460 NL2 mod grade for plates and heads in LPG tank trucks. Cryogenic 9%nickel steels with toughness down to minus 196 °C are used in the construction of storage tanks for liquefied natural (LNG) gas. We also supply heat-treatable fitting steels (WPHY) in as-rolled condition.

Greater thickness and sour-gas-resistant

We provide heavy shell plates in selected steel grades, in thicknesses up to 200 mm and higher unit weights up to 24 tons based on ingot-cast pre-material. We also manufacture pressure vessel steels in sour-gas-resistant design for our customers.

From a single source 

 We supply from a single source shell plates, heads and cones made of both plain carbon steel and roll-clad design. This results in the following advantages for our customers:     

  • Manufacturing and processing benefits, primarily in the field of welding, through use of the same steel for shell plates and heads     
  • Technical consultation and coordination through quality assurance and research     
  • Simultaneous manufacturing and delivery of shell plates and heads     
  • Lower customer costs

Steel grades

Steel group

Standard grades

Steel grades

Un-alloyed and

alloyed

creep-resistant steels

EN 10028-2:

P235, 265, 295, 355GH

16Mo3, 20MnMoNi4-5

13CrMo4-5, 10CrMo9-10

13CrMoV9-10

Fine-grain structural steels

for

pressure vessel construction

EN 10028-3:

P275 NH, NL1, NL2

P355 NH, NL1, NL2

P460 NH, NL1, NL2

Nickel-alloyed

cryogenic steels

EN 10028-4:

12Ni14

X12Ni5

X7Ni9

X8Ni9

Pressure-vessel steels

ASTM/ASME

(S)A 203 Grade D, E

(S)A 387 Grade 11 Class 2

(S)A 387 Grade 12 Class 2

(S)A 387 Grade 22 Class 2

(S)A 516 Grade 60, 65, 70 

(S)A 537 Class 1, 2

(S)A 533 Type B Class 2

(S)A 738 Grade A, B

Die Stahlsorten (S)A 516 Grade 50, 65 and 70 nach ASTM/ASME sind auf Anfrage auch sauergasbeständig lieferbar.

 

Dimensions

Plate thickness:

5–150 mm (dependent on thickness and steel grade)

Plate width:

3,950 mm max. (dependent on thickness and steel grade; quenched and tempered up to 3,800 mm max.)

Plate length:

18,700 mm max. (dependent on thickness and steel grade; quenched and tempered up to 13,200 mm max.)

Ordered weight:   

At least 2 tons per line item (dependent on thickness and steel grade)

Unit weight:

11.7 tons max. per single plate

 

Heavy shell plates made of ingot-cast pre-material

We supply heavy boiler plates in selected steel grades, in thicknesses up to 200 mm and unit weights up to 24 tons based on ingot-cast pre-material.

Steel grades: 

(S)A 516 Gr 60, 65, 70

(S)A 387 Gr 11 Cl.2

(S)A 387 Gr 12 Cl.2

(S)A 387 Gr 22 Cl.2

(S)A 537 Cl.1, 2

(S)A 542 Type D Cl.4a

(S)A 533 Type B Cl.2 (other steel grades upon request)

Plate thickness:   

70–200 mm

Plate width:

3,400 mm max. (dependent on thickness and steel grade)

Plate length:

13,200 mm max. for quenched and tempered plates (9,000 mm max. for thicknesses 150–200 mm)

Unit weight:    

24 tons max. per single plate


LNG-Tanks

Nickel plates

We supply high-quality nickel plates in extra wide and thin dimensions for the storage and transport of LNG and LPG.

LNG

Natural gas is liquefied at the extremely low temperature of -164 °C, shrinking its volume by a factor of 600. This makes its storage and transport possible and economically efficient. At these very low temperatures, the utilization of special 9 % nickel steels is necessary in order to guarantee sufficient toughness and resistance to brittle cracking. We supply extra wide plates to this market segment, even with a thickness of 5 mm.

LPG

The LPG process is used to produce propane and process gases from natural gas. These gases are liquefied at room temperature at low pressure and are stored in special tanks made of 5 % nickel steels. We supply shell plates and vessel heads from a single source.

Highest quality for the highest degree of safety

The basis of our high-quality nickel plates are high-purity slabs from our own steelmaking plant. The very low carbon content guarantees perfect weldability. Further advantages are found in the product's excellent impact strength and the fracture-mechanical properties (CTOD). The entire plate surface undergoes ultrasonic testing. The residual magnetism is below 50 gauss.

Preprocessing to meet specific customer requirements

  • Shot-blasted or shot-blasted and primed
  • Weld edge preparation: Minimal hardening of the flame-cut edge is a result of the low carbon content.
  • Plate bending

Steel grades

Steel group

Standard

Steel grades

5 % nickel steels

EN 10028-4:2003

X12Ni5

9 % nickel steels

EN 10028-4:2003

ASTM/ASME 553

X7Ni9

A/SA 553 Type 1

 

Dimensions

Plate thickness

5 % nickel steels: 5–70 mm

9 % nickel steels: 5–60 mm

Plate width

1,600–3,800 mm, extra wide plates: 9 % nickel steels with a thickness of 5 mm are available in widths up to 2,800 mm.

Plate length

12,400 mm max.

Ordered weight  

At least 2 tons per line item

Unit weight

10.0 tons max. per single plate

 

Certifications

Our product quality is certified by all of the leading certification institutions. We also meet the highest requirements of KOGAS, the state-operated Korean gas company.

Certifications for 5 % nickel steels

  • Lloyd's Register of Shipping (LRS), Great Britain
  • Technischer Überwachungsverein (TÜV), Germany
  • Germanischer Lloyd (GL), Germany
  • Registro Italiano Navale (RINA), Italy
  • Lloyd's Register of Shipping (LRS), Great Britain
  • Bureau Veritas (BV), France

Certifications for 9 % nickel steels

  • Lloyd's Register of Shipping (LRS), Great Britain
  • Technischer Überwachungsverein (TÜV), Germany

Apparatus engineering


Offshore

Offshore


Civil Engineering

Civil Engineering


Mechanical engineering

Mechanical engineering