Gear Steel And Bearing Steel

1144 Free-machining Steel Bar

1144 Free-machining Steel Bar
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Product Details

1144 steel is a type of medium carbon resulphurized carbon steel containing manganese and Sulphur, also known as Stressproof steel. It offers high strength and hardness and may be flame hardened to further enhance surface properties. The cutting-free steel has been used where resistance to deformation and wear are essential like spindles, gears and piston rods and ect, can be used as an economical replacement for more expensive quenched-and-tempered alloy grades.

 

Material Specifications: ASTM A311 (Class B), ASTM A108

Shape: Round bar

Size: 6.35mm - 63mm

Finish: Turned ground & polished finish

 

1144 EQUIVALENT MATERIAL

UNS

JIS

ISO

GB

G11170

SUM43

SUM43

Y40Mn 

 

1144 CHEMICAL COMPOSITION

C

Si

Mn

P

S

0.40-0.48

1.35-1.65

1.20-1.55

0.040 Max

0.24-0.33

 

MECHANICAL PROPERTY(HOT ROLLED)

Tensile strength,psi

Yield strength, psi

Elongation (%)

Reduction of area (%)

Hardness

115,000

100,000

≥14

≥20

≤207HB

 

APPLICATION

Gears, pinions, piston rods, sleeves, lead screws, racks,shafts, pump shafts, arbors, spindles, link pins, mandrels, boring bars, collets, bushings.

 

World Iron&Steel is a professional supplier of alloy steel rods and bars. We manufacture and distribute high quality steel 1144 round bar for gear application in accordance with ASTM A108 standards, specified delivery conditions and final customer specifications for industrial and commercial applications. Special sizes of steel bars and delivery issues can be further negotiated and we provide a wide range of solutions for purchasing departments to select alternative grades, contact us today!   


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