1140 Steel Round Bar

ASTM A29 AISI 1140 carbon steel rod and Flat bar manufacturer

SAE 1140 rods and Hex bar suppliers


1140 Steel Round Bar
1140 Steel Round Bar
sae 1140 rods
SAE 1140 rods
aisi 1140 carbon steel rod
AISI 1140 carbon steel rod


Grade 1140 is a carbon steel alloy whose chemistry contains manganese along with trace contents of both sulfur and phosphorus. A reason why both manufacturers and suppliers discourage welding the Aisi 1140 Carbon Steel Rod is due to the presence of sulfur in its alloy. Sulfur, in this carbon steel, causes gas porosity, on the weld once the steel has been subjected to welding. Aside from causing the failure, welding may hinder the other properties of the alloy, rendering the steel damaged.

Similarly, before hot working or subjecting the 1140 Steel Round Bar to any heat treatment, one must consult the manufacturer to avoid undue loss of properties, on account of this alloy being sulfur containing steel. The machinability of this steel is considered to be fairly good. In fact, the machinability of 1140 Alloy Steel is about 70% that of grade 1112. The content of sulfur in the alloy of the 1140 Round Bar is what makes machining this alloy relatively simpler.

Hence, this high strength material is used for free machining operations. Its high content of carbon and manganese results in the carbon steel Sae 1140 Rods exhibiting higher tensile strength properties. Which is why they are commonly noticed in the automotive industry, as the combination of manganese and carbon improve the mechanical strength of the 1140 Steel Bar.


1140 Steel Bar Specification:


Carbon steel
Standard resulfurized
United States: UNS G11400

Our Size Range Of 1140 Round Steel Bars:

16mm, 18mm, 20mm, 22mm, 23.5mm, 24mm, 25mm, 26mm, 27mm, 28mm, 30mm, 32mm, 34mm, 35mm, 36mm, 37mm, 38mm, 40mm, 42mm, 45mm, 46.5mm, 47mm, 50mm, 51mm,53mm, 56mm, 60mm, 63mm, 65mm, 70mm, 75mm, 78mm, 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm.

Equivalent grades of SAE 1140 round bars:

1141, ASTM A29, ASTM A510, ASTM A576, SAE J1397, SAE J403, SAE J412

Grades We Manufacture in addition to 1140 Round Bars:

MS, SAE 1018, IS 2062, A105, SAE 1008, SAE 1010, SAE 1140, C15, C18, C20, 1020, C22, 1022, C25, 1025, C30, 1030, C35, 1035, 35C8, S35C, C40, 1040, C45, 45C8, 1045, CK45, C50, 1050, C55, 55C8, 1055, C60, 1060, C70, 41Cr4, 40Cr4, 40Cr1, En18, En18D, SAE 1140, SAE 1536, 37Mn2, 37C15, En15, SAE 1141, LF2, EN19, SAE 4140, 42CrMo4, EN24, EN31, SAE 52100, 20MnCr5, 8620, EN1A, EN8, EN8D, EN9, ST 52.3, EN42, En353, SS 410, SS 202, SS 304, SS 316 and other grades as per customer requirement.
Chemical Composition of 1140 Round Bar

Weight %
0.04 (max) 
Mechanical Properties of 1140 Round Bar
T (°C)
Density (×1000 kg/m3)
Poisson’s Ratio
Elastic Modulus (GPa)


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