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AISI 1137 Cold Drawn Free Cutting Steel Bar Rods SUM41

Place of Origin Jiangsu,China
Certification ISO 9001 ,CE
Minimum Order Quantity 1 PCS
Delivery Time 7~10 working days
Payment Terms L/C, T/T, Western Union
Supply Ability 5000 Ton/Tons per Month

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Product Details
Product Name Free Cutting Steel Round Bar Grade AISI 1137
Delivery Conditon Forging,Rolling And Stamping,Annealing,Normalizing Diameter 3mm~300mm
Length 2500-6000mm
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SUM41 Steel Bar Rods


SUM41 alloy steel round bar


AISI 1137 alloy steel round bar

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Product Description
AISI 1137 Cold Drawn Free Cutting Steel Bar Rods SUM41

AISI 1137 is a resulfurized carbon steel containing nominally 1.50% manganese and 0.08-0.13% sulfur to provide free-machining characteristics. It is recommended especially for high-production automatic machine products. AISI 1137 has relatively low hardenability. In the longitudinal direction its ductility and toughness are fairly good but in the transverse direction they tend to be low. Its many uses include spline shafts, mine-car axles and shafts, gears, bolts, tool holders and tie-rods. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment.


1) ASTM A29

2) ASTM A108 



Bright round bar up to 63.5mm diameter is all cold drawn.

Bright round bars of 63.5- 100mm diameter are cold drawn or smooth-turned and polished.

Bright round bars over 100mm diameter are all smooth-turned and polished.

All hexagon bar and all square bar is cold drawn.

Flat Bar is cold drawn and supplied sharp-edged.



  • Drawn : H10
  • Smooth-turned and polished : H10,H11
  • Square Bar: H11
  • Hex Bar: H11
  • Flat Bar: H11



Element C Mn P S
AISI 1137 0.32~0.39% 1.35~1.65% 0.04% 0.08~0.13%



  • Gears
  • Shafts
  • Studs
  • Bolts aand nuts