Aluminum plated steel sheet for rapid heating hot-stamping, production method of the same and rapid heating hot-stamping method by using this steel sheet

Composite magnetic material and magnetic element

Corrosion Resistant Magnetic Component for a Fuel Injection Valve

Method for manufacturing high strength steel plate

HIGH TENSILE STRENGTH STEEL FOR CONTAINER AND PRODUCING METHOD OF THE SAME

HIGH-STRENGTH ULTRATHIN STEEL WIRE AND METHOD OF MANUFACTURING THE SAME

Method for manufacturing an ultrahigh strength hot dip galvanized steel sheet having martensitic structure as matrix

MANUFACTURING METHOD FOR VERY HIGH-STRENGTH COLD-ROLLED DUAL-PHASE STEEL SHEETS AND SHEETS SO PRODUCED

Magnetocaloric materials

Method for inspecting bolts

HIGH STRENGTH, HIGH TOUGHNESS STEEL ALLOY

HIGH-CR FERRITIC/MARTENSITIC STEEL HAVING IMPROVED CREEP RESISTANCE AND PREPARATION METHOD THEREOF

HIGH STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

Method of producing cold-rolled steel sheet

Iron-chromium alloy with improved compressive yield strength and method of making and use thereof

Stainless steel material for a separator of a solid polymer fuel cell and a solid polymer fuel cell using the separator

Quenchable steel sheet having high hot press workability and method of manufacturing the same

PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS

Case hardening steel, carburized component, and manufacturing method of case hardening steel

Manufacturing method of grain-oriented electrical steel sheet

High strength steel sheet and method for manufacturing the same

Methods for processing nanostructured ferritic alloys, and articles produced thereby

Method of making a hypereutectoid, head-hardened steel rail

Hot dip galvanized high strength steel sheet excellent in plating adhesion and hole expandability and method of production of same

High strength galvannealed steel sheet with excellent appearance and method for manufacturing the same

High strength galvanized steel sheet with excellent formability

Manufacturing method of oriented SI steel with high electric-magnetic property

Method for producing a formed steel part having a predominantly ferritic-bainitic structure

MARTENSITIC STAINLESS STEEL SEAMLESS TUBE FOR OIL COUNTRY TUBULAR GOODS AND MANUFACTURING METHOD THEREOF

Ferrite system heat-resistant cast steel and exhaust system component

ALLOY STEEL FOR LOW TEMPERATURE VACUUM CARBURIZING

High-tensile steel with excellent weldability and toughness and with tensile strength of 550 MPa class or more and method of production of the same

Bainite steel and methods of manufacture thereof

Ni-based alloy high-chrome steel structure and manufacturing method of the same

THICK-WALLED HIGH-STRENGTH HOT ROLLED STEEL SHEET WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR PRODUCING SAME

HIGH-STRENGTH HEAT RESISTING CAST STEEL, METHOD OF PRODUCING THE STEEL, AND APPLICATIONS OF THE STEEL

FERRITIC STAINLESS STEEL EXCELLENT IN HEAT RESISTANCE AND TOUGHNESS

Low alloy steels with superior corrosion resistance for oil country tubular goods

Air cooling equipment for heat treatment process for martensitic stainless steel pipe or tube

Cold-rolled steel sheet, method for manufacturing the same, and backlight chassis

High-strength steel sheets with excellent resistance to delayed fracture after forming, method for manufacturing the same, and high-strength automotive part manufactured of the same

Development of a high strength high toughness steel

Method for Producing Steel Sheet for Gasket, and Gasket

Ausferritic Wear-Resistant Steel Castings

FERRITE STAINLESS STEEL FOR USE IN PRODUCING UREA WATER TANK

High-characteristic steel for large-size parts

HIGH-STRENGTH STEEL SHEET FOR CAN AND METHOD FOR MANUFACTURING SAME

Thermal mechanical processing of stainless steel

Continuous cast slab and producing method therefor

Iron-based pre-alloyed powder

Glass forming hardbanding material

Bake hardening steel with excellent surface properties and resistance to secondary work embrittlement, and preparation method thereof

Steel material for dissimilar metal joining, joined body of dissimilar metals and process for joining dissimilar metal materials

Steels for sour service environments

Lean duplex stainless steel excellent in corrosion resistance and toughness of weld heat affected zone

NON-MAGNETIC CAMSHAFT JOURNAL AND METHOD OF MAKING SAME

Martensitic stainless steel strengthened by copper-nucleated nitride precipitates

Method for producing a steel melt containing up to 30% manganese

Steel for heat treatment

Steel product for welding

AUSTENITIC HEAT RESISTANT ALLOY, HEAT RESISTANT PRESSURE MEMBER COMPRISING THE ALLOY, AND METHOD FOR MANUFACTURING THE SAME MEMBER

Iron-based alloy for a golf club head

Cold work tool steel with outstanding weldability

HEAVY WALL STEEL MATERIAL HAVING SUPERIOR WELDABILITY AND METHOD FOR PRODUCING THE SAME

High-strength steel sheet and method of producing molten steel for high-strength steel sheet

HIGH-STRENGTH STEEL SHEET FOR CANS AND METHOD FOR MANUFACTURING THE SAME

CAST COMPRESSOR ARTICLES AND METHODS OF FORMING SAME

Coil spring for automobile suspension and method of manufacturing the same

Spring steel and spring having superior corrosion fatigue strength

Spring steel and spring having superior corrosion fatigue strength

Spring steel and spring having superior corrosion fatigue strength

STEEL SHEET FOR GALVANIZING WITH EXCELLENT WORKABILITY, AND METHOD FOR MANUFACTURING THE SAME

High-strength cold-rolled steel sheet and high-strength plated steel sheet

High-Strength UOE Steel Pipe Excellent in Deformability and Low-Temperature Toughness of Heat Affected Zone

Steam turbine rotor and alloy therefor

Compositions and methods for determining alloys for thermal spray, weld overlay, thermal spray post processing applications, and castings

Slurry-based manufacture of thin wall metal components

Processes for reducing flatness deviations in alloy articles

High-strength low-alloy steel excellent in high-pressure hydrogen environment embrittlement resistance characteristics and method for producing the same

METHOD OF MANUFACTURING MARTENSITIC STAINLESS STEEL

High-Strength Steel Sheet with Excellent Ductility and Crackless Edge Portion, Hot-Dip Galvanized Steel Sheet, and Manufacturing Method Thereof

THERMAL SPRAY PROCESSES AND ALLOYS FOR USE IN SAME

FERRITIC STAINLESS STEEL SHEET HAVING SUPERIOR PUNCHING WORKABILITY AND METHOD FOR MANUFACTURING THE SAME

HIGH-STRENGTH NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

IRON-NICKLE ALLOY

High-strength steel sheet and method for manufacturing the same

COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

DUAL PHASE STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

Non-oriented electrical steel sheet and production process thereof

High strength thick-gauge steel plate superior in weldability and having tensile strength of 780 MPA or more and method of production of same

STEEL FOR MACHINE STRUCTURE USE FOR SURFACE HARDENING AND STEEL PART FOR MACHINE STRUCTURE USE

Method of manufacturing ultra low carbon ferritic stainless steel

Rail steel with an excellent combination of wear properties and rolling contact fatigue resistance

Steel plate that exhibits excellent low-temperature toughness in a base material and weld heat-affected zone and has small strength anisotropy, and manufacturing method thereof

High-strength galvanized steel sheet with excellent formability and method for manufacturing the same

Carburized steel part

METAL SEPARATOR FOR FUEL CELL AND ITS PRODUCTION METHOD

Ferritic stainless steel

Steel based composite material

Vehicle body reinforcing member

Durable iron-chromium-aluminum alloy showing minor changes in heat resistance

High strength thin steel sheet for the superior press formability and surface quality and galvanized steel sheet and method for manufacturing the same

HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

Low-carbon martensitic chromium-containing steel

Blade made of steel alloy

Method for producing two-phase stainless steel pipe

High-strength steel sheet and galvanized steel sheet having very good balance between hole expansibility and ductility, and also excellent in fatigue resistance, and methods of producing the steel sheets

High strength corrosion resistant steel

METHOD OF PROCESSING METALLIC MATERIAL FOR A CONDUCTIVE MEMBER CELL AND A METHOD OF ADJUSTING SURFACE ROUGHNESS OF THE METALLIC MATERIAL

High strength steel plate, steel pipe with excellent low temperature toughness, and method of production of same

High-strength thick steel plate for storage container excellent in low-temperature toughness of multi-layer welded joint

AUSTENITIC STAINLESS STEEL FOR HIGH VACUUM AND HIGH PURITY GAS TUBE APPLICATION

Piston ring material for internal combustion engine

Steel Material, Process of Fabricating Steel Material, and Apparatus of Fabricating Steel Material

STEEL FLAT PRODUCT HAVING A METALLIC COATING WHICH PROTECTS AGAINST CORROSION AND METHOD FOR PRODUCING A METALLIC ZN-MG COATING, WHICH PROTECTS AGAINST CORROSION, ON A STEEL FLAT PRODUCT

Method for coating a hot-rolled or cold-rolled steel flat product containing 6-30 wt% Mn

Hot-rolled steel sheet excellent in fatigue properties and stretch-flange formability and method for manufacturing the same

High-strength steel plate excellent in drop weight properties and base steel toughness

FERRITIC HEAT-RESISTANT STEEL

Nitrocarburized raw material for crankshafts and method for manufacturing the same

STAINLESS STEEL USED FOR OIL COUNTRY TUBULAR GOODS

Linepipe steel

High-strength steel sheet, strength member for vehicles using the same, and method for producing strength member for vehicles

PROCESSES FOR PRODUCING HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET AND HIGH-STRENGTH GALVANNEALED STEEL SHEET

Heat-resistance ferritic stainless steel

AUSTENITIC STAINLESS STEEL, AND METHOD FOR REMOVING HYDROGEN THEREFROM

Cold rolled steel sheet

Method of producing common rail and common rail

FIRE-RESISTANT STEEL MATERIAL SUPERIOR IN WELD HEAT AFFECTED ZONE REHEAT EMBRITTLEMENT RESISTANCE AND LOW TEMPERATURE TOUGHNESS AND METHOD OF PRODUCTION OF SAME

STEEL FOR INDUCTION HARDENING

High-alloy cold work die steel

FORMABLE SINTERED ALLOY WITH DISPERSED HARD PHASE

Steel

Rolling part and manufacturing method thereof

Method of producing steel with high manganese and low carbon content

Heat-resistant, austenitic cast steel and exhaust member made thereof

GALVANIZED STEEL SHEET EXCELLENT IN UNIFORMITY AND METHOD FOR PRODUCING THE SAME

Welded steel pipe for high strength line pipe superior in low temperature toughness and method of production of the same

METHOD FOR PRODUCING LOW YIELD STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN UNIFORMITY

Steel plate and steel pipe for line pipes

Railway wheel alloy

High-strength steel sheet excellent in resistance to stress-relief annealing and low temperature joint toughness

HIGH-STRENGTH HOT-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Method for producing a surface-decarburised hot-rolled strip

High-strength hot-rolled steel sheet and method for manufacturing same

STEEL FOR INDUCTION HARDENING WITH EXCELLENT COLD WORKABILITY, ROLLING MEMBER MADE OF THE SAME, AND MOTION GUIDE DEVICE USING ROLLING MEMBER

STEEL TUBE WITH EXCELLENT STEAM OXIDATION RESISTANCE AND METHOD FOR PRODUCING THE STEEL TUBE

FERROUS SINTERED ALLOY, PROCESS FOR PRODUCING FERROUS SINTERED ALLOY AND CONNECTING ROD

Axle from a seamless tube for railroad vehicles, and a process for manufacturing an axle from a seamless steel tube for railroad vehicles

Plastic injection mold of low carbon martensitic stainless steel

PROCESS FOR MANUFACTURING COLD-ROLLED AND ANNEALED STEEL SHEET WITH A VERY HIGH STRENGTH, AND SHEET THUS PRODUCED

Steel compositions for special uses

GALVANIZED WEATHERING STEEL

High strength hot dip galvanized steel sheet and high strength galvannealed steel sheet excellent in shapeability and plateability

STRIP OF STEEL HAVING A VARIABLE THICKNESS IN LENGTH DIRECTION

Cast heat-resistant austenitic steel with improved temperature creep properties and balanced alloying element additions and methodology for development of the same

Low-density steel having good drawability

Ferrite-austenite stainless steel sheet for structural component excellent in workability and impact-absorbing property and method for producing the same

Alloy to be surface-coated and sliding members

Reactor for continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated

Ultra soft high carbon hot rolled steel sheet and method for manufacturing same

High-strength stainless steel material and production process of the same

PROCESS FOR MANUFACTURING STAINLESS STEEL CONTAINING FINE CARBONITRIDES, AND PRODUCT OBTAINED FROM THIS PROCESS

High strength alloys

FERRITIC STAINLESS STEEL WITH EXCELLENT BRAZEABILITY

HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL, HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL PRODUCT AND METHOD FOR PRODUCING THE SAME

High carbon hot-rolled steel sheet

Corrosion resistant steel for marine applications

STEEL FOR FRACTURE SPLITTING TYPE CONNECTING ROD

High strength and low yield ratio steel for structure having excellent low temperature toughness

WIRE RODS HAVING SUPERIOR STRENGTH AND DUCTILITY FOR DRAWING AND METHOD FOR MANUFACTURING THE SAME

Steel wire rod for bearing steel, manufacturing method of steel wire rod for bearing steel, heat treatment method of steel bearing, steel bearing and soaking method of bearing steel

Method of producing hot-rolled steel sheet

HIGH-STRENGTH TWIP STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

STEEL PRODUCTS FOR PISTON RINGS AND PISTON RINGS

Heat treatment method of pin for endless track

HOT ROLLED DUAL PHASE STEEL STRIP HAVING FEATURES OF A COLD ROLLED STRIP

High-strength cold-rolled steel sheet

Steam turbine power plant

High-strength cold-rolled steel sheet excellent in bending workability

Cast, heat-resistant austenitic stainless steels having reduced alloying element content

ALLOY AND A METHOD OF MAKING AN ALLOY

Manufacturing method and steel for heavy munition casings

Plated steel wire for parallel wire strand (PWS) with excellent twist properties

Strip of hot rolled micro-alloyed steel for obtaining finished pieces by cold pressing and shearing

Mechanical component and rolling bearing

High tensile steel for deep drawing and manufacturing method thereof and high-pressure container produced thereof

HEAVY WALL SEAMLESS STEEL PIPE FOR LINE PIPE AND A MANUFACTURING METHOD THEREOF

High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the same

Method for production of steel product with outstanding descalability; and steel wire with outstanding descalability

Cold-forming steel article

Stainless Steel Sheet for Structural Components Excellent in Impact Absorption Property

Low hysteresis sensor

High-strength steel plate and producing method therefor

Austenitic stainless hot-rolled steel material with excellent corrosion resistance, proof stress, and low-temperature toughness

Welding trip steels

Method of making a composite steel plate

High-strength spring steel excellent in brittle fracture resistance and method for producing same

Cold-Rolled Steel Sheet and Method for Producing the Same

Steel, for hot forming or quenching in a tool, having improved ductility

HIGH-STRENGTH COMPOSITE STEEL SHEET HAVING EXCELLENT MOLDABILITY AND DELAYED FRACTURE RESISTANCE

HIGH TENSILE STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN FORMABILITY AND METHOD FOR MANUFACTURING THE SAME

Cr-Containing Steel Superior in Heat Fatigue Charateristics

HOT ROLLED THIN CAST STRIP PRODUCT AND METHOD FOR MAKING THE SAME

Hot rolled thin cast strip product and method for making the same

High-strength low-alloy steel excellent in high-pressure hydrogen environment embrittlement resistance characteristics and method for producing the same

Cold-rolled steel sheet

Welding additive material

Method of production of 780 MPa class high strength steel plate excellent in low temperature toughness

HIGH STRENGTH HOT ROLLED THICK STEEL SHEET EXCELLENT IN STRENGTH AND TOUGHNESS AFTER HEAT TREATMENT AND METHOD FOR MANUFACTURING THE SAME

Welding solid wire

AL-PLATED STEEL SHEET FOR EXHAUST GAS PASSAGEWAY MEMBERS OF MOTORCYCLES AND THE MEMBERS

CONDUCTING PLATES FOR FUEL CELL ELEMENTS

HIGH-STRENGTH STEEL SHEET

Steel for machine and structural use having excellent machinability and process for producing the same

HOT-WORKING TOOL STEEL HAVING EXCELLENT TOUGHNESS AND HIGH-TEMPERATURE STRENGTH AND METHOD FOR PRODUCTION THEREOF

MARTENSITIC STAINLESS STEEL SEAMLESS PIPE FOR OIL COUNTRY TUBULAR GOODS AND METHOD FOR MANUFACTURING THE SAME

Method for manufacturing martensitic stainless steel pipe or tube

Wear-resistant material

Process for setting the thermal conductivity of a steel, tool steel, in particular hot-work steel, and steel object

STEEL FOR PRODUCING MACHINE COMPONENTS FORMED FROM SOLID STOCK

INTERNAL HIGH HARDNESS TYPE PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE, ROLLING CONTACT FATIGUE RESISTANCE, AND DELAYED FRACTURE PROPERTY AND METHOD FOR PRODUCING SAME

High strength thin cast strip product and method for making the same

Steel and processing method for the manufacture of high strength, fracture-splittable machinery components

Hot forging use non-heat-treated steel and hot forged non-heat-treated steel part

High strength steel sheet excellent in bending workability and fatigue strength

Method for hot dip galvanizing of AHSS or UHSS strip material, and such material

Iron-Nickel-Cobalt Alloy

Steel wire rod for high strength and high toughness spring having excellent cold workability, method for producing the same and method for producing spring by using the same

HIGH TEMPERATURE ALLOYS

Implantable medical devices comprising bio-degradable alloys

FORMED PRODUCT AND METHOD FOR PRODUCTION THEREOF

COLD ROLLEDSTEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

High-strength steel sheet having excellent elongation, stretch flangeability and weldability

Method for manufacturing a high alloy pipe

Manufacturing method for a steel pipe for fuel injection pipe

Austenitic heat resistant alloy

Galvanized rolling-hardened cold-rolled flat product and process for producing it

Butt weld and method of making using fusion and friction stir welding

Extremely Low Carbon Steel Plate Excellent in Surface Characteristics, Workability, and Formability and a Method of Producing Extremely Low Carbon Cast Slab

PISTON RING MATERIAL FOR INTERNAL COMBUSTION ENGINE

High strength electrical steel sheet and method of production of same

IRON-BASED POWDER AND COMPOSITION THEREOF

HOT-FORMING STEEL ALLOY

Stainless steel excellent in corrosion resistance, ferritic stainless steel excellent in resistance to crevice corrosion and formability, and ferritic stainless steel excellent in resistance to crevice corrosion

Rolling member, rolling bearing and process for manufacturing rolling member

ABRASION-RESISTANT STEEL EXCELLENT IN FORMABILITY AND PRODUCTION METHOD THEREOF

Superaustenitic stainless steel and method of making and use thereof

Hot-forging micro-alloyed steel and hot-rolled steel excellent in fracture-splitability and machinability, and component made of hot-forged microalloyed steel

Lead free free-cutting steel and its use

Superelastic alloy structural geometry for ultrahigh mechanical damping

Method for producing a workpiece and a workpiece

WEAR-RESISTANT STEEL PLATE HAVING EXCELLENT WEAR RESISTANCE AT HIGH TEMPERATURES AND EXCELLENT BENDING WORKABILITY AND METHOD FOR MANUFACTURING THE SAME

Ferritic stainless steel sheet having superior sulfuric acid corrosion resistance and method for manufacturing the same

COLD ROLLED AND CONTINUOUSLY ANNEALED HIGH STRENGTH STEEL STRIP AND METHOD FOR PRODUCING SAID STEEL

Carbonitrided induction hardened steel part superior in surface fatigue strength at high temperature and method of production of same

Compact strip or thin slab processing of boron/titanium steels

Welding material and welded joint structure

COLD-FORMABLE CHROME STEEL

COLD-WORK DIE STEEL AND DIE

Microalloyed steel with good resistance to hydrogen for the cold-forming of machine parts having high properties

Compositions produced using an in situ heat treatment process

HIGH STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME

Ultrahigh-strength steel sheet excellent in hydrogen embrittlement resistance and workability, and manufacturing method therefor

Spring element made from a ferritic chromium steel

COLD-WORK DIE STEEL AND DIES FOR COLD PRESSING

Steel rod and high strength steel wire having superior ductility and methods of production of same

Process for manufacturing an airbag inflator bottle member

MANUFACTURING METHOD FOR HIGH-CONCENTRATION CARBURIZED STEEL

FERRITIC STAINLESS STEEL AND STEEL SHEET FOR HEAT PIPES, AND HEAT PIPE AND HIGH-TEMPERATURE EXHAUST HEAT RECOVERY SYSTEM

High-strength martensite heat resisting cast steel, method of producing the steel, and applications of the steel

High-strength welded steel pipe including weld metal having high cold-cracking resistance and method for manufacturing the same

Steel pipe excellent in deformation characteristics and method of producing the same

Ferritic Stainless Steel for Use as Conduit Members For Emission of Automotive Exhaust Gas

Lacquered baked steel sheet for can

Internal high hardness type pearlitic rail with excellent wear resistance and rolling contact fatigue resistance and method for producing same

High-strength composition iron powder and sintered part made therefrom

Galvanized high strength steel sheet

High-strength steel sheets excellent in hole-expandability and ductility

HIGH CLEANLINESS SPRING STEEL AND HIGH CLEANLINESS SPRING EXCELLENT IN FATIGUE PROPERTIES

Ultra-High Strength Stainless Alloy Strip, a Method of Making Same, and a Method of Using Same for Making a Golf Club Head

Method of manufacturing high tensile strength thick steel plate

High-strength hot rolled steel sheet being free from peeling and excellent in surface properties and burring properties, and method for manufacturing the same

High yield ratio and high-strength hot-dip galvanized steel sheet excellent in workability and production method thereof

Ferrous abrasion resistant sliding material

Zinc-plated high-tension steel sheet excellent in press formability

Hot dip plated high strength steel sheet for press forming use superior in low temperature toughness

Low carbon resulfurized free-machining steel having high machinability

AUSTENITIC IRON-NICKEL-CHROMIUM-COPPER ALLOY

PROCESS OF APPLYING HARD-FACING ALLOYS HAVING IMPROVED CRACK RESISTANCE AND TOOLS MANUFACTURED THEREFROM

Ferritic Chromium Steel

Composition and method of forming high productivity, continuous casting roll shell alloy

Si-killed steel wire rod and spring excellent in fatigue properties

Method for manufacturing flat steel products from a steel forming a martensitic microstructure

USE OF AN IRON-CHROMIUM-ALUMINUM ALLOY WITH LONG SERVICE LIFE AND MINOR CHANGES IN HEAT RESISTANCE

High-strength cold rolled steel sheet having excellent formability, and plated steel sheet

ECO-FRIENDLY PB-FREE FREE CUTTING STEEL WITH EXCELLENT MACHINABILITY AND HOT WORKABILITY

Method for manufacturing hot-rolled sheet having fine-grained ferrite, and hot-rolled sheet

Iron-nickel alloy with a high level of ductility and a low expansion coefficient

Steel for high-cleanliness spring with excellent fatigue characteristics and high-cleanliness spring