1213 Free Cutting Steel Bar

 

AISI 1213 free cutting steel, equivalent to EN1A/220M07. AISI 1213 is low carbon mild steel which is suitable for machining using both automatic and CNC machines. Available in square, round, flat or hexagon form. 1213 free-cutting steel is mainly used in the production of instruments, watch parts, automobiles, machine tools and other various machines with small forces and strict requirements on size and finish. It has strict requirements on dimensional accuracy and finish, but on mechanical properties. Standard parts with relatively low requirements, such as gears, shafts, bolts, valves, bushings, pins, pipe joints, spring cushions and machine tool screws, plastic molding molds, surgical and dental procedures, etc.

 

SAE-AISI 1213 steel is a resulfurized carbon steel formulated for primary forming into wrought products. 1213 is the designation in both the SAE and AISI systems for this material. G12130 is the UNS number.

 

Chemical Composition:

 
C(%)Si(%)Mn(%)P(%)S(%)
≤0.130.20 ~ 0.400.70 ~ 1.000.07 ~ 0.120.24 ~ 0.33

 

Mechanical Propoerties:

 
PropertiesMetricImperial
Tensile strength540 MPa78300 psi
Yield strength415 MPa60200 psi
Bulk modulus (typical for steel)140 GPa20300 ksi
Shear modulus (typical for steel)80 GPa11600 ksi
Elastic modulus190-210 GPa27557-30458 ksi
Poisson's ratio0.27-0.300.27-0.30
Elongation at break10%10%
Reduction of area35%35%
Hardness, Brinell167167
Hardness, Knoop (converted from Brinell hardness)188188
Hardness, Rockwell B (converted from Brinell hardness)8585
Hardness, Vickers (converted from Brinell hardness)175175
Machinability (based on 100 machinability for AISI 1212 steel)140140

 

Equivalent Grade:

 

  • ASTM A108

  • ASTM A29

  • ASTM A576

  • SAE J403

  • FED QQ-S-637 (1913)

 

 

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