ASTM A 29/A 29M-03 Steel Bars are hot-wrought carbon and alloy steel bars manufactured for general engineering, automotive, and industrial applications requiring reliable mechanical properties, consistent chemical composition, and excellent machinability. This specification covers a wide range of carbon steels, alloy steels, and free-machining grades supplied in hot-rolled, forged, or heat-treated conditions. Manufactured in accordance with ASTM A29/A29M-03, this standard specifies requirements for chemical composition, mechanical properties, heat treatment, dimensional tolerances, and surface quality of steel bars used in structural and mechanical components. Ladhani Metal Corporation is a trusted manufacturer, supplier, and exporter of ASTM A 29/A 29M-03 steel bars, supplied with mill test certificates and strict quality inspection in compliance with international standards. Forms of Supply (as per specification): Hot rolled round bars, Black round bars, Bright drawn bars, Peeled bars, Turned bars, Ground bars, Forged bars, Square bars, Hex bars, Flat bars Scope of Specification: • Covers carbon steel bars and alloy steel bars • Supplied in as-rolled, annealed, normalized, or quenched and tempered condition • Includes free-machining grades with sulphur or lead additions • Applicable for general engineering and mechanical purposes Grades : 1005, 1006, 1008, 1010, 1011, 1012, 1015, 1016, 1017, 1018, 1020, 1021, 1022, 1023, 1025, 1026, 1030, 1033, 1035, 1037, 1040, 1042, 1045, 1047, 1050, 1053, 1055, 1060, 1070, 1080, 1085, 1090, 1095, 1117, 1141, 1144, 1137, 12L14, 12L15, 15L20, 4130, 4135, 4140, 4142, 4145, 4150, 4340, 4330, 4320, 8620, 8640, 8660, 5140, 5160, 52100, 6150, 9260, 9310, 9840 Typical Chemical Composition Categories: • Carbon Steels – Low, medium, and high carbon grades • Alloy Steels – Chromium, nickel, molybdenum, manganese alloyed grades • Free Machining Steels – Enhanced sulphur content for improved machinability Mechanical Properties (as per grade and heat treatment condition): • Tensile Strength – Varies depending on grade and heat treatment • Yield Strength – As specified per grade • Elongation – As per mechanical requirement • Hardness – Controlled according to application and processing Key Features: • Wide range of carbon and alloy steel grades • Excellent machinability and weldability (grade dependent) • Uniform chemical composition and microstructure • Reliable mechanical performance • Suitable for heat treatment and surface hardening Material Characteristics: ASTM A 29/A 29M-03 steel bars provide dependable strength, durability, and versatility for mechanical components. The availability of multiple grades allows selection based on required hardness, toughness, wear resistance, and machinability. These bars can be further processed through forging, machining, carburizing, induction hardening, or quenching and tempering depending on application requirements. Applications: • Shafts and axles • Gears and pinions • Fasteners and bolts • Automotive components • Machinery parts • Structural and mechanical equipment components Conclusion: Ladhani Metal Corporation supplies premium quality ASTM A 29/A 29M-03 steel bars in various sizes, finishes, and heat-treated conditions. With consistent quality, strict compliance to specification requirements, and wide grade availability, ASTM A 29/A 29M-03 bars are widely used in automotive, industrial, and engineering applications. For stock availability, customized sizes, or technical specifications, contact Ladhani Metal Corporation. article and grade Link: https://www.ladhanimetal.in/page/astm-a29-a29m-steel-bar-specification/69a030bbc01cf225ebbd6250