Hull Materials for Shipbuilding

Hull materials for shipbuilding

COLD-PROOF WELDING HULL STEELS

HIGH-STRENGTH CLAD CORROSION-RESISTANT STEEL

HIGH-STRENGTH NON-MAGNETIC STEELS

WELDING OF HIGH-STRENGTH COLD-PROOF STEELS WITHOUT PREHEATING

ALUMINUM 1575 (Al-Mg system)


PANELS OF ALUMINUM ALLOYS

STEEL-ALUMINUM BIMETAL WITH ASYMMETRICAL LAYER ARRANGEMENT

WELDING OF TITANIUM-STEEL BIMETALS

WELDING OF HIGH-STRENGTH TITANIUM ALLOYS

WELDED STRUCTURES OF TITANIUM ALLOYS

STYRENE-FREE POLYETHER STRUCTURAL GLASS PLASTIC

THREE-LAYER POLYETHER STRUCTURAL GLASS PLASTIC FOR SHIP HULLS

COLD-PROOF WELDING HULL STEELS

Meant for fabrication of welded structures used at temperatures up to -60C under attack of sea water, repeated static and dynamic loadings.

Fields of application Technical datahulls of icebreakers, lighter-aboard ships Yield strength, N/mm2 315-690ice-resistance oil-rig platforms Impact energy, at temperature (-) 60C, J - 47-78building structures Plate thickness, mm 10-130pressure vessels Plate width, mm 1500-3200hoisting equipment Plate length, mm 6000-11500

Sections, plates, castings and forgings of cold-proof welding steel are approved by the Russian Maritime Register of Shipping.The steels are covered by patents.

Advantages

high processability;hydrogen-sulfide cracking resistance;resistance to layered failures;high cold resistance to (-) 60.

We offer

technical and technological documentation;delivery of steel in batches;delivery of welding consumables.

HIGH-STRENGTH CLAD CORROSION-RESISTANCE STEEL

Reliable anticorrosion protection of structures

prevents corrosion-erosion wear;decreases loads on a hull arising from heavy sticking and breaking away ice-floes;decreases specific quantity of metal per structure;increases serviceability;

HULL MATERIALS FOR SHIPBUILDING http://www.crism-prometey.ru/Eng/commercial/products/hull_materials.htm

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This steel is used

for building of

hulls of ice ships and icebreakers;water-development works.

for making

chemical equipment;food-industry equipment.

Technical data

the number of layers 2-3;the thickness of a cladding layer, mm 0.3-8,0;shear strength, N/mm2 , not lower than 300;plate thickness, mm 2,0-60;width, mm 1100-2600;length, mm 1000-11500.

Steel AB-2P is accepted for protection of ice belt of the offshore stationary platforms operating in the Prirazlomnoye oil-and-gas field of the Russian sector of Arctic Regions under the following conditions:temperature from (-) 2 to (-) 60C, corrosion-erosion attacks, cyclic, bending, crosscutting, axial, static, seismodynamic loads.

We offer

selection of optima combinations of layers to solve concrete problems;delivery of plates;technical and technological documentation for treatment.

HIGH-STRENGTH NONMAGNETIC STEELS

Novelty: Electrochemical potential at pearlitic steel level

E= -450 mV

These steels are used for making heavily loaded parts, units, structures in the power plant industry, instrument making and shipbuilding, drilling rigs.

Production technology ensures high quality and stability of physicomechanical properties of steel.

Mechanical properties

yield strength, MPa 500-720;impact strength, J/cm2 70-120;magnetic permeability, gauss/Oe 1,005;

Advantages

combination of lack of magnetic properties and high strength;compatibility with pearlitic steels during operation in corrosive media;reliability and extended life time;high level of mechanical properties in the wide negative temperature range;

We offer

deliveries of rolled plates, bars, sections;deliveries of forgings and pipes in the wide range of sizes.

WELDING OF HIGH-STRENGTH COLD-PROOF STEELS WITHOUT PREHEATING

Low-carbon manganese-nickel welding wire with low content of impurities and gases, special electrode coating as well as fused and agglomerated fluxes ensure high cold resistance of the weld metal at temperatures to (-) 60C.

Properties of metal deposit

Yield strengthof steel, MPa Category of welding consumables Yield strength, MPa, not less than Ultimate strength , MPa Relative resistance, MPa Temperature C which ensures impactenergy KV=41 J

390 4Y46HH5Y46HH 460 570-720 19-40-60

500 4Y55HH5Y55HH 550 670-830 17-40-60


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620 4Y62HH5Y62HH 620 720-890 17-40-60

A new composition of alloying of the weld metal makes it possible:

to decrease the hydrogen content of metal mdeposit;to lower the temperature of heating cycle for high-strength steels;to rule out a heating cycle in welding of type AB steel.

Temperature conditions of welding of type AB steel at the use of new welding consumables depending on the strength and the thickness

Yield strength of steel, MPa Thickness 10-40 mm of welding 41-70 mm steel 71-100 mm 101-130 mm390 -250 00C 200C drying(40-50C)

500 100C 200C drying(40-50C)

620 200C drying(40-50C) 1000C

The diffusion hydrogen content of steel shall be not more than 2,0 cm3 / 100 g.n.m.Welding consumables for mechanized and automatic manual gas-shielded and submerged arc welding were by the Russian Maritime Register of Shipping.

We offer

technological and technical documentation;delivery of welding consumables.


High-strength aluminum for marine application with a unique homogeneous fine-grained structure used in the heavily loaded lightened constructions of high-speed vessels and ground-effect craft.

Alloy:

nonheat-strengthened; weldable; it has an excellent corrosion resistance to attack by sea water, sea fog etc.

High strength of semifinished products makes it possible to reduce the mass of constructions by a factor of 1.25 - 1.5 as against standard alloys.

Technical data on semifinished products

Semifinished product Condition s, MPa Propertiess s 0.2, MPa d , %PlatesPanelsProfiles

annealed 410 300 11,0

Plates H 323 480 430 7,0

We offer

Production and delivery of:

plates (4-10) x (1200-1500) x 7000 mm;pressed profiles with a section up to 200 cm2;pressed panels - monolithic, with stiffening ribs (4-6) x 1600 x 6000 mm.


This is an effective material for new high-speed air-cushion and hydrofoil vessels.

Alloy:

corrosion-resistantweldableeasy to deformnonheat-strengthened

This higher strength alloy, which has been in service on board sea-going vessels for more than 30 years, works in the tempearture range from (-)196C to (+) 70C under severe corrosive conditions.

Technical data on semifinished products


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Semifinished product Condition s B , MPa Propertiess 0.2 , MPa

s, %

Plates annealed 340 180 15Profiles hot-pressed 340 210 11Panels annealed 340 190 11

We guarantee

equal to base metal strength of weld joints without heat treatment;reliability and extended lifetime;excellent corrosion resistance.

We offer

Production of the following semifinished products by the Customer's request:

plates, profiles, pipes, pressed panels

PANELS OF ALUMINUM ALLOYS

Light corrosion-resistant unit-pressed panels with longitudinal stiffening ribs made of aluminum alloys of various grades.

No changes in properties under sea and atmospheric conditions during service life up to 15 years.

Characteristics

Tensile strength, MPa from 120 to 580Yield strength, MPa from 40 to 500Percentage elongation, % from 8 to 20Density, g/cm - from 2.65 to 2.77

We offer

development of technology, production, supply of pressed products;recommendations with respect to selection of aluminum alloys, determination of the panel size range;development, production of structures and assemblies (including welded ones).

STEEL-ALUMINUM BIMETAL WITH ASYMMETRICAL LAYER ARRANGEMENT

A new bimetal - an unit which is practically ready for welding of steel and aluminum structures.

Fields of application: marine transport, superstructures of offshore platforms, high-speed railway transport.

Basic properties

Bimetal tensile strength, MPa 400-430Layers cohesion strength, MPa:

shearing strength > 100tearing strength > 55

The use of bimetal makes it possible to:

to reduce by more than 50% the labour content of fulfillment of assembly and welding work;to increase working capacity and corrosion resistance of welded assemblies;to conduct welding operations in any position of weld;to ensure maintainability of welded assemblies;to increase 10-15 times fatigue life.

The bimetal and its weld joints are covered by eight RF patents and approve by the Russian Maritime Register of Shipping.

We offer

bimetal flat bars 8-12 mm in thickness, up to 165 mm in width and 3000 mm in length;technology for production of bimetal and procedure for its welding;weld joint designs;standard assemblies with butt and overlapped weld joints of asymmetrical bimetal and aluminum flat bar;large-scale structures simulating the full-scale joint between a steel hull of the vessel and a superstructure of aluminum alloy;

WELDING OF TITANIUM-STEEL BIMETALS


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We offer

development of welding procedure for structures of inhomogeneous materials (titanium-steel).

WELDING OF HIGH-STRENGTH TITANIUM ALLOYS

We offer

development of welding procedure for high-strength titanium alloys with yield strength 90-100 kgf/mm2 which do not call for heat treatment.

WELDED STRUCTURES OF TITANIUM ALLOYS

We have amassed experience of forty years in welding titanium alloys

Fields of application

The power industry, shipbuilding, medicine, food industry, chemical industry, oil and gas industry.

Welding methods

Argon-arc welding, electron-beam and laser welding for joints of 0.2- 400 mm in thickness

We have developed

procedural guidelines for determination of weldability, durability and lifetime of welded assemblies;procedures and equipment for welding of different structures;methods of weld joints quality control

We offer

production of structures of titanium alloys and their assembly at the customer's place;consultations on operation and maintenance of structures;custom-performed R&D for methods of welding structures of inhomogeneous materials including titanium-steel;custom-performed R&D for methods of welding high-strength titanium alloys which do not call for heat treatment.

STYRENE-FREE POLYETHER STRUCTURAL GLASS PLASTIC

Fields of application

Ship hulls, car bodies, products for railway transport, consumer goods.

The most important property of this glass plastic - chemical and biological stability.

Advantages

ecologically sound material;strength and processing characteristics satisfy requirements to traditional polyether glass plastics;does not evolve toxic and volatile components to environment;improves working conditions;reduces expenses on ventilation of production areas.

We offer

development of technology for production of concrete articles;rendering technical assistance in introducing and mastering new technologies at the Customer's plant.

THREE-LAYER POLYETHER GLASS PLASTIC FOR SHIP HULLS

The plastic is intended for production of serviceable, easily producible hulls of trawlers, mine-sweepers, high-sped vessels where dynamic principles of maintenance are used, sea yachts.

An improved effective technology is used for production of a three-layer monolithic sheathing with carrying layers of a polyether glass syntactic foam made by way of layer-by-layer molding or of preliminary produced rough parts.

The polyether glass plastic is environmentally safe, ensures habitability conditions; it is almost inflammable, with a low speed of the flame propagation over the surface (calorimetry coefficient KMAX = 0.6; index of flame propagation I = 12).

Strength and elastic characteristics of the three-layer glass syntactic foam having a density of 0.98 g/cm3 meet up-to-date requirements to structural materials of the ship and the vessel skins.

This syntactic foam is rated at usage in the air and aqueous medium in the temperature range of (-) 40 to (+) 60C. It has taken the place of valuable types of wood and expensive power consuming low-magnetic steels, aluminum-magnesium alloys.

Technologically effective structure of a hull with a small number of framework beams which provides for simplification of building methods at maintaining a high level of strength and serviceability. Increased transversal and impact strength as compared to athree-layer glass plastic with a middle layer of PHV.


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High level of strength and rigidity in combination with low density.

We offer

delivery of hulls for export;establishment of a joint venture for the production of vessel and ship hulls.


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Documents

Hull Materials for Shipbuilding