AISI 1144 Medium-carbon steel bar
Standards: ASTM A311 (Class B), ASTM A108
Steel mill: Dongbei Special Steel/Shougang
Size: Round bar (Diameter): 6.35mm – 63mm
Square bar / Flat bar: 3mm to 800mm
Type: Round bar, Square bar, Flat bar
Surface treatment: Turned ground & polished finish
Heat treatment: Cold finished, hot rolled
1144 steel is a type of high strength medium carbon resulphurized carbon steel containing manganese and Sulphur, also known as Stressproof steel. It offers excellent free machining qualities and higher mechanical properties and can be treated to relieve the stress created by the cold drawing. 1144 steel has been used where resistance to deformation and wear are essential like gears, pinions, piston rods, sleeves, lead screws, racks, shafts, pump shafts, arbors, spindles, link pins, mandrels, boring bars, bushings, or can be used as an economical replacement for more expensive quenched-and-tempered alloy grades.
1144 Equivalent Material
| UNS | JIS | ISO | GB |
| G11440 | SUM43 | 44Mn28 | Y40Mn |
1144 Chemical Composition
| C | Si | Mn | P | S | Fe |
| 0.40-0.48 | 1.35-1.65 | 1.20-1.55 | 0.040 Max | 0.24-0.33 | Balanced |
1144 Mechanical Property(Hot rolled)
| Tensile strength, Mpa | Yield strength, Mpa | Elongation (%) | Reduction of area (%) | Hardness |
| 745 | 620 | ≥10 | ≥30 | ≤207HB |
Wiho Steel is a fully stocked and leading metal manufacturer, supplier, exporters, distributors of steel mill-product forms such as pipe, tubing, bar and rod. The steel products provide by us shall be fabricated from prime quality raw materials and is fully certifiable to industrial specifications like ASTM and ASME or other relevant standards. Wiho Steel supply and stock a large inventory of ASTM 1144, AISI 1144, SAE 1144 (SUM43 / 44Mn28/ Y40Mn) round bar used for machined parts requiring higher strength and wear resistance. For more information, please contact us or fill in the form below.
