Carbon Steel

STEEL CLASSIFICATION ACCORDING TO EN 10027-2
1.0XXXNon-alloy steelsNumber = 1.00XX   Base steels
Number = 1.01XX   Quality steel (General structural steels with Rm < 500 MPa )
Number = 1.02XX   Other structural steels (Not intended for heat treatment with Rm < 500 MPa )
Number = 1.03XX   Steels with average C < 0,12%   or   Rm < 400 MPa
Number = 1.04XX   Steels with average 0,12% =< C < 0,25%   or   400 MPa = < Rm < 500 MPa
Number = 1.05XX   Steels with average 0,25% =< C < 0,55%   or   500 MPa =< Rm < 700 MPa
Number = 1.06XX   Steels with average C >= 0,55%   or   Rm >= 700 MPa
Number = 1.07XX   Steels with higher P or S content
1.0XXXAlloy SteelsNumber = 1.08XX   Steels with special physical properties
Number = 1.09XX   Steels for other applications
1.1XXXNon-alloy special steelsNumber = 1.10XX   Steels with special physical properties
Number = 1.11XX   Structural pressure vessel and engeneering steels with C < 0,5%
Number = 1.12XX   Structural pressure vessel and engeneering steels with C > = 0,5%
Number = 1.13XX  Structural pressure vessel and engeneering steels with special requirements
Number = 1.14XX   –
Number = 1.15XX   Tool steel
Number = 1.16XX   Tool steel
Number = 1.17XX   Tool steel
Number = 1.18XX   Tool steel
Number = 1.19XX   –
1.2XXXAlloy Tool SteelsNumber = 1.20XX   Cr
Number = 1.21XX   Cr-Si,   Cr-Mn,   Cr-Mn-Si
Number = 1.22XX   Cr-V,   Cr-V-Si,   Cr-V-Mn,   Cr-V-Mn-Si
Number = 1.23XX   Cr-Mo,   Cr-Mo-V,   Mo-V
Number = 1.24XX   W,   Cr-W
Number = 1.25XX   W-V,   Cr-W-V
Number = 1.26XX   W excluding groups 24, 25 and 27
Number = 1.27XX   With Ni
Number = 1.28XX   Other
Number = 1.29XX   –
1.3XXXAlloy Miscellaneous SteelsNumber = 1.30XX   –
Number = 1.31XX   –
Number = 1.32XX   High speed steel with Co
Number = 1.33XX   High speed steel without Co
Number = 1.34XX   –
Number = 1.35XX   Bearing steels
Number = 1.36XX   Materials with special magnetic properties without Co
Number = 1.37XX   Materials with special magnetic properties and with Co
Number = 1.38XX   Materials with special physical properties without Ni
Number = 1.39XX   Materials with special physical properties and with Ni
1.4XXXStainless and Heat Resisting steelsNumber = 1.40XX   Stainless steel with Ni < 2.5 % without   Mo, Nb and Ti
Number = 1.41XX   Stainless steel with Ni < 2.5 % and   Mo but without   Nb and Ti
Number = 1.42XX   –
Number = 1.43XX   Stainless steel with Ni >= 2.5 % without   Mo, Nb and Ti
Number = 1.44XX   Stainless steel with Ni > = 2.5 % with   Mo but without   Nb and Ti
Number = 1.45XX   Stainless steels with special additions
Number = 1.46XX   Chemical resistant and high temp Ni alloys
Number = 1.47XX   Heat resistant steels with   Ni < 2.5 %
Number = 1.48XX   Heat resistant steels with   Ni > = 2.5 %
Number = 1.49XX   Materials with elevated temperature properties
1.5XXXStructural, pressure vessel and engineering steelsNumber = 1.50XX   Mn-Si-Cu
Number = 1.51XX   Mn-Si,   Mn-Cr
Number = 1.52XX   Mn-Cu,   Mn-V,   Si-V,   Mn-Si-V
Number = 1.53XX   Mn-Ti,   Si-Ti
Number = 1.54XX   Mo,   Nb,   Ti,   V,   W
Number = 1.55XX   B,   Mn-B   Mn < 1.65 %
Number = 1.56XX   Ni
Number = 1.57XX   Cr-Ni with   Cr < 1.0 %
Number = 1.58XX   Cr-Ni with   1.0 % =< Cr < 1.5 %
Number = 1.59XX   Cr-Ni with   1.5 % =< Cr < 2 %
1.6XXXStructural, pressure vessel and engineering steelsNumber = 1.60XX   Cr-Ni with   2 % =< Cr < 3 %
Number = 1.61XX   –
Number = 1.62XX   Ni-Si,   Ni-Mn,   Ni-Cu
Number = 1.63XX   Ni-Mo,   Ni-Mo-Mn,   Ni-Mo-Cu,   Ni-Mo-V,   Ni-Mn-V
Number = 1.64XX –
Number = 1.65XX   Cr-Ni-Mo with   Mo < 0.4 % + Ni < 0.2 %
Number = 1.66XX   Cr-Ni-Mo with   Mo < 0.4 %   +   2.0 % =< Ni < 3.5 %
Number = 1.67XX   Cr-Ni-Mo with   Mo < 0.4 % + 3.5 % =< Ni < 5 %,   or   Mo >= 0.4 %
Number = 1.68XX   Cr-Ni-V,   Cr-Ni-W,   Cr-Ni-V-W
Number = 1.69XX   Cr-Ni except groups 57 to 68
1.7XXXStructural, pressure vessel and engineering steelsNumber = 1.70XX   Cr,   Cr-B
Number = 1.71XX   Cr-Si,   Cr-Mn,   Cr-Mn-B,   Cr-Si-Mn
Number = 1.72XX   Cr-Mo with  Mo < 0.35 % ,   Cr-Mo-B
Number = 1.73XX   Cr-Mo with   Mo >= 0.35 %
Number = 1.74XX   –
Number = 1.75XX   Cr-V with   Cr < 2.0 %
Number = 1.76XX   Cr-V with   Cr >= 2.0 %
Number = 1.77XX   Cr-Mo-V
Number = 1.78XX   –
Number = 1.79XX   Cr-Mn-Mo,   Cr-Mn-Mo-V
1.8XXXStructural, pressure vessel and engineering steelsNumber = 1.80XX   Cr-Si-Mo,   Cr-Si-Mn-Mo,   Cr-Si-Mo-V,   Cr-Si-Mn-Mo-V
Number = 1.81XX   Cr-Si-V,   Cr-Mn-V,   Cr-Si-Mn-V
Number = 1.82XX   Cr-Mo-W,   Cr-Mo-W-V
Number = 1.83XX   –
Number = 1.84XX   Cr-Si-Ti,   Cr-Mn-Ti,   Cr-Si-Mn-Ti
Number = 1.85XX   Nitriding steels
Number = 1.86XX   –
Number = 1.87XX   Steels not for heat treatment by user
Number = 1.88XX   High strength weldable steels not intended for heat treatment by user
Number = 1.89XX   High strength weldable steels not intended for heat treatment by user
1.9XXXNon-alloy Quality steelsNumber = 1.90XX   Base steels
Number = 1.91XX   Quality steel (General structural steels with Rm < 500 MPa )
Number = 1.92XX   Other structural steels (Not intended for heat treatment with Rm < 500 MPa )
Number = 1.93XX   Steels with average C < 0,12%   or   Rm < 400 MPa
Number = 1.94XX   Steels with average 0,12% =< C < 0,25%   or   400 MPa = < Rm < 500 MPa
Number = 1.95XX   Steels with average 0,25% =< C < 0,55%   or   500 MPa =< Rm < 700 MPa
Number = 1.96XX   Steels with average C >= 0,55%   or   Rm >= 700 MPa
Number = 1.97XX   Steels with higher P or S content
2.XXXXAlloyNumber = 2.XXXX
Steel and Cast Iron Standards
EN 1561Founding. Grey cast irons
ENĀ 1562Founding. Malleable cast irons
EN 1563Founding. Spheroidal graphite cast irons
EN 1564Founding. Austempered ductile cast irons
EN 12513Founding. Abrasion resistant cast irons
EN 13835Founding. Austenitic cast irons
EN ISO 4957Tool steels
EN 10016Non-alloy steel rods for drawing and/or cold rolling
EN 10025Technical delivery conditions for structural steels
EN 10028Flat products made of steels for pressure purposes
EN 10083Steels for quenching and tempering
EN 10084Case hardening steels
EN 10085Nitriding steel
EN 10087Free cutting steels
EN 10088Stainless steels
EN 10089Hot rolled steels for quenched and tempered springs
EN 10090Valve steels and alloys for internal combustion engines
EN 10095Heat Resisting Steels and Nickel Alloys
EN 10106Cold rolled non-oriented electrical steel sheet and strip delivered in the fully processed state
EN 10107Grain-oriented electrical steel sheet and strip delivered in the fully processed state
EN 10111Continuously hot rolled low carbon steel sheet and strip for cold forming
EN 10113Hot-rolled products in weldable fine grain structural steels
EN 10120Steel sheet and strip for welded gas cylinders
EN 10130Cold rolled low carbon steel flat products for cold forming
EN 10132Cold rolled narrow steel strip for heat treatment
EN 10137Plates and wide flats made of high yield strength structural steels in the quenched and tempered conditions
EN 10139Cold rolled uncoated mild steel narrow strip for cold forming
EN 10142Continuously hot-dip zinc coated low carbon steels strip and sheet for cold forming
EN 10147Continuously hot-dip zinc coated structural steels strip and sheet
EN 10149Specification for hot-rolled flat products made of high yield strength steels for cold forming
EN 10151Stainless steel strip for springs
EN 10152Electrolytically zinc coated cold rolled steel flat products for cold forming
EN 10154Continuously hot-dip aluminium-silicon (AS) coated steel strip and sheet
EN 10162Cold rolled steel sections
EN 10202Cold reduced tinmill products. Electrolytic tinplate and electrolytic chromium/chromium oxide coated steel
EN 10207Steels for simple pressure vessels
EN 10208Steel pipes for pipelines for combustible fluids
EN 10209Cold rolled low carbon steel flat products for vitreous enamelling
EN 10210Hot finished structural hollow sections of non-alloy and fine grain steels
EN 10213Steel castings for pressure purposes
EN 10216Seamless steel tubes for pressure purposes
EN 10217Welded steel tubes for pressure purposes
EN 10219Cold formed welded structural hollow sections of non-alloy and fine grain steels
EN 10222Steel forgings for pressure purposes
EN 10224Non-alloy steel tubes and fittings for the conveyance of water and other aqueous liquids
EN 10225Weldable structural steels for fixed offshore structures
EN 10248Hot rolled sheet piling of non alloy steels
EN 10250Open steel die forgings for general engineering purposes
EN 10253Butt-welding pipe fittings
EN 10255Non-alloy steel tubes suitable for welding and threading
EN 10263Steel rod, bars and wire for cold heading and cold extrusion
EN 10265Magnetic materials. Specification for steel sheet and strip with specified mechanical properties and magnetic permeability
EN 10267Ferritic-pearlitic steels for precipitation hardening from hot-working temperatures
EN 10268Cold rolled steel flat products with high yield strength for cold forming
EN 10269Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
EN 10272Stainless steel bars for pressure purposes
EN 10273Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties
EN 10277Bright steel products
EN 10283Corrosion resistant steel castings
EN 10292Continuously hot-dip coated strip and sheet of steels with higher yield strength for cold forming
EN 10293Steel castings for general engineering uses
EN 10295Heat resistant steel castings
EN 10296Welded circular steel tubes for mechanical and general engineering purposes
EN 10297Seamless circular steel tubes for mechanical and general engineering purposes
EN 10302Creep resisting steels, nickel and cobalt alloys
EN 10305Steel tubes for precision applications
EN 10326Continuously hot-dip coated strip and sheet of structural steels
EN 10327Continuously hot-dip coated strip and sheet of low carbon steels for cold forming
EN 10331Magnetic materials. Specification for sintered soft magnetic materials
EN 10336Continuously hot-dip coated and electrolytically coated strip and sheet of multiphase steels for cold forming
EN 10340Steel castings for structural uses
EN 10341Cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed state
EN 10346Continuously hot-dip coated steel flat products
EN 10349Steel castings. Austenitic manganese steel castings