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HYUNDAI BNG STEEL

Guide to use

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Selection of Steel Type Stainless steel can demonstrate its feature to the full provided you select it by taking neighboring environment (weather condition), usage, etc. into consideration.

Criteria for selection based on environmental conditions Selection of stainless steel type should be made in consideration of weather conditions and pollution degree as well as corrosion resistance.
Criteria for selection based on environmental conditions
Steel Type Use Area
Rural area Urban area Industrial area Coastal Area
Indoor environment Light corrosive environment General environment Severest corrosive environment Indoor environment Light corrosive environment General environment Severest corrosive environment Indoor environment Light corrosive environment General environment Severest corrosive environment Indoor environment Light corrosive environment General environment Severest corrosive environment
316 Excessive application Excessive application Excessive application Excessive application Excessive application Excessive application Proper Proper Excessive application Proper Proper Can be used if the frequency of cleaning is high Excessive application Proper Proper Can be used if the frequency of cleaning is high
304 Proper Proper Proper Proper Proper Proper Proper Can be used if the frequency of cleaning is high Proper Can be used if the frequency of cleaning is high Can be used if the frequency of cleaning is high Improper Proper Proper Can be used if the frequency of cleaning is high Improper
430 Improper Proper Can be used if the frequency of cleaning is high Can be used if the frequency of cleaning is high Improper Improper Improper Improper Can be used if the frequency of cleaning is high Improper Improper Improper Can be used if the frequency of cleaning is high Improper Improper Improper
Indoor environment Light corrosive environment General environment Severest corrosive environment
Excessive application Proper Can be used if the frequency of cleaning is high Improper
Criteria for selection based on parts of building
Criteria for selection based on parts of building<
Environment Rural Environment Costal Environment
Parts of Building Cleaning Part Not-Cleaned Cleaning Part Not-Cleaned
Non-remaining of Sediment Remaining of Sediment Non-remaining of Sediment Remaining of Sediment Non-remaining of Sediment Remaining of Sediment Non-remaining of Sediment Remaining of Sediment
304 Applicable Applicable except that the corrosion-causing materials are condensed Applicable except that the corrosion-causing materials are condensed Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable
316 Applicable Applicable Applicable Not Applicable Applicable Applicable except that the corrosion-causing materials are condensed Not Applicable Not Applicable
High Corrosion Resistance Applicable Applicable Applicable Applicable Applicable Applicable Applicable Applicable
Painting Applicable Applicable Applicable Applicable Applicable Applicable Applicable Applicable
Applicable Not Applicable Applicable except that the corrosion-causing materials are condensed

Storage and Transportation Careful management should be taken so that there will be no scratch, moisture or fingerprint on the surface of stainless steel for maintenance of beauty of surface and prevention of rust.

Storage 1. Store in the clean, dry and well-ventilated warehouse in the original package status with covering. 2. Be careful not to wet the package materials. If failed to observe, it should be immediately removed to prevent corrosion on the surface. 3. Materials with protective films should not be exposed to the direct sunlight.

Transportation 1. Rubber or wood stand should be used to protect the surface of products. 2. Make sure to wear gloves for safety and prevention of fingerprint pollution on the surface of products.

Processing and Construction Processing & construction method of stainless steel should be well complied with to maintain the best quality.

Processing

Criteria for selection based on environmental conditions
Cutting and Press Plasma or raise cutting are recommended, but the basic materials which may be affected by heat should be processed with heat treatment or grinding, if they are cut by gas or arc.
Banding If the thick board materials are bended in rolling direction, it is desirable to have 2 times thick as the plate, 4 times wide of the plate (perpendicular to rolling direction).
Drawing For improvement of moldability and protection from the surface manage due to abrasion with molding during processing, it is recommended to use the extreme pressure oil of lubricant with heat resistance or pressure resistance, and cleanly remove oils that remain on the surface after processing with cleaning or grinding.
Welding Perfectly remove the impurities such as rust or oils on the surface using grinding or flux, and use the welding rod suitable for the materials. Welding slag, spatter and removal of oxide should be removed using stainless brush and processed with pickling and passivation processing on welding and heat-affected parts.

Maintenance Stainless steel should be regularly cleaned to maintain its unique beauty.

Environment, proper cleaning cycle per part
Environment, proper cleaning cycle per part table
Parts Structure Environment
Rural area General Environment Severe Environment
Rainwater-exposed Parts Remaining of Sediment 1~2 times/year 1~2 times/year 3~4 times/year
No-remaning of Sediment 2~3 times/year 2~3 times/year 4~5 times/year
Rainwater-unexposed parts, Indoor Remaining of Sediment 1~2 times/year 3~4 times/year 4~5 times/year
No-remaning of Sediment 2~3 times/year 4~5 times/year 5~6 times/year
Cleaning method per surface status
Cleaning method per surface status table
Surface Status Cleaning Method
Fingerprint Use alcohol or organic solvent (ether, benzene) to wipe out with soft clothes and wash out with water
Fat, oil, grease pollution After wiping out with soft clothes or paper, wash it with detergent or ammonia solution
Welding heat discoloration Clean with nitrogen solution (10%) or hydrofluoric acid and wash out with water or neutral processing with ammonia or Sodium bicarbonate solution
Rust due to surface pollutants clean using oxalic acid, sulfuric acid and nitrogen solution(10%) or grinding agent
Bleaching agent and various acids Immediately wash out with water, soak in ammonia or Sodium bicarbonate solution and clean with detergent in warm water
Label and protective film Wipe out with warm water and mild detergent . Use alcohol or organic solvent for any adhesive remainings
Red Rust Remove rust with Sand Paper or stainless blush and then use cleaning agent
Dust Clean with mild detergent or warm water
Burned organic materials soak in hot detergent or ammonia solution before cleaning and then use the detergent containing mild grinding agent
Rainbow pattern Clean with warm water or detergent

Weldability Stainless Steel can maintain its unique beauty when proper welding rod is used.

Welding table of stainless steel
Welding table of stainless steel table
Welding Method Items Application Thickness
(mm)		 Steel Type Use
304 309 310S 410 430
Gas welding t<1 2 2 2 2 2 Mainly for welding
Covering arc welding t>0.8 1 1 1 2 2 Mainly butting of plate, edge reinforcing welding, pipe with big diameter, and casting, etc
Arc welding 0.5<t<3 1 1 1 3 3 Butting of thin flat, edge reinforcing welding, pipe with small diameter, etc
MIG welding t>3 1 1 1 3 3 Mainly butting of plate, edge reinforcing welding, pipe with big diameter
Submerged arc welding t>6 1 2 2 3 3 Mainly butting of plate, edge reinforcing welding, direct welding of big plate for PLANT
Atomic hydrogen welding 0.3<t<3 2 2 2 2 2 utting, edge reinforcing welding, pressure container, etc
Spot welding 0.15<t<3 2 2 2 3 3 Verlapping welding if airtightness of thin plate is not required, airplane, vehicle and kitchen utensil, etc
Flash butt welding 0.25<t 2 2 2 3 4 Mainly butting welding, airplane, car pipes, mechanical parts, etc
Temporary welding 0.15<t<2 2 2 2 3 3 Butting welding if airtightness of thin plate is required, car parts, gas burner freezing parts, kitchen devices, etc
Soldering 0.3<t<2 3 3 3 4 4 Welding of small parts for welding when precision of dimension is not required or strength is not important in thin film
(Notes)
  1. 1. Most recommended welding which is being put to practical use.
  2. 2. Commonly used, but restricted for use in some cases.
  3. 3. Used in specific case.
  4. 4. Hardly used.
Proper welding for covering arc welding
Proper welding for covering arc welding table
Steel Plate Materials Welding Rod KS Specification
STS302, STS304, STS304L D307, D308, D308L, D349, D630
STS309S D309, D309L, D309Nb, D309NbL, D309Mo, D309MoL, D312
STS310S D310, D310Mo
STS316, STS321, STS347 D16-8-2
STS316, STS316L, STS444, STS317, STS317L D316, D316L, D316L1L, D317, D317L, D318
STS309S, STS310S D329J1
STS321, STS347 D347, D347L
STS410, STS430 D410, D410Nb, D430, D430Nb