Steel Round Bar

High strength 40Cr/5140 alloy steel round bar, 16mm diameter, bright surface. Q+T treated for durability. Ideal for shafts and gears. Ultrasonic tested per SEP 1921. Custom sizes and packaging available.

SAE 8620 low carbon Ni-Cr-Mo alloy round bar with high hardenability, good machinability, and weldability. Ideal for carburized gears, shafts, and pinions. Stock sizes 3-400mm. ISO 9001 certified.

High-strength alloy steel round bar, 90mm diameter, forged via EAF+LF+VD. Equivalent to EN24, AISI 4340, JIS SNCM439. Ideal for shafts, gears, and structural parts. UT tested per ASTM/SEP 1921. Custom lengths available.

High-strength alloy steel round bar in OD 300mm, equivalent to SAE4340, GB 40CrNiMoA, and DIN 1.6511. Offers excellent hardenability, toughness, and high-temperature strength. Ideal for heavy-duty shafts, gears, and forged components. Custom sizes and tolerances available.

AISI 4340 alloy steel round bar offers ultra-high strength, toughness, and wear resistance. Ideal for aerospace and high-stress parts. Available in 16-450mm diameter, annealed or forged. ISO 9001 certified, custom sizes and machining services available.

High strength and tenacity alloy steel round bar. Ideal for heavy-duty shafts and gears. Available annealed or quenched and tempered. Custom sizes, fast lead time, and ultrasonic tested to meet strict standards.

SAE8620H alloy steel round bar offers high hardenability, good weldability, and excellent machinability. Ideal for carburized gears, shafts, and pinions. Available in 12-380mm diameters. Certified ISO 9001, sourced from government-owned mills. Custom sizes and heat treatment available.

Cold drawn SAE1045/C45 carbon steel round bar with tight tolerances, smooth finish, and improved strength. Shot blasted, drawn, straightened, and oiled. Ideal for shafts and heat treating. Custom sizes available.

High-strength 34CrNiMo6 alloy steel round bar, 6-500mm diameter. Quenched and tempered for durability. Ideal for heavy machinery axles, gears, and shafts. Custom sizes and surface finishes available. Complies with EN 10083 and ASTM A29 standards.

High-strength 30CrNiMo8+QT steel round bar, hot rolled and forged, OD 120mm. Offers excellent durability and toughness for general engineering. Custom sizes available, heat-treated for superior performance.

SAE 1045 carbon steel flat bar offers high tensile strength of 540 MPa and yield strength of 315 MPa. Ideal for industrial applications requiring durability and wear resistance. Custom sizes available. Complies with international standards.

SAE1045 QT steel bar offers consistent mechanical properties with 830MPa yield strength and 32HRC max hardness. Ideal for shafts, bolts, and precision CNC components. Custom sizes available with fast delivery.

High carbon chromium bearing steel round bar in grades GCr15, SAE52100, EN 100Cr6. Diameters 6mm-1200mm with tight tolerances. Annealed, forged or hot rolled. Ideal for shafts and machinery. Custom sizes available.

SAE8620H alloy steel round bar offers high wear resistance and core strength. Ideal for gears and shafts. Supplied in 8mm-300mm diameter. Meets ASTM A29, DIN, and JIS standards. Custom sizes and surface finishes available.

High quality GB 60Si2MnA spring steel round bar, quenched and tempered to 28-34 HRC. Ideal for heavy vehicle and industrial springs. Available in custom sizes with precision cutting. Certified to ASTM and DIN standards.

High-strength nitriding steel bar with tensile strength ≥980 MPa. Available in round bar up to 800mm diameter and plate up to 2200mm width. Custom sizes, surface treatments, and heat treatment options offered. Suitable for demanding industrial applications.

High carbon chromium manganese bearing steel with 62-66 HRC hardness after quenching. Equivalent to AISI 52100 and DIN 100Cr6. Available in round bar, plate, and flat bar with custom sizes. Ideal for bearings, gears, and high-load shafts.

Low alloy Ni-Cr-Mo case hardening steel with tensile strength 530 MPa and Brinell hardness 149. Offers high wear resistance and core strength. Suitable for gears, shafts, and bushings. Available in round bar, plate, and square bar. Complies with ASTM A29, DIN, EN, JIS, and BS standards.

High-strength 40CrNiMoA alloy steel round bar, equivalent to AISI 4340 and SNCM439. Forged with black surface, 160mm diameter. Offers excellent toughness and wear resistance. Custom sizes, heat treatment, and ultrasonic testing available. Ideal for shafts, gears, and heavy machinery.

High-quality EN 1.7131 16MnCr5 case hardening steel bar, 80mm diameter. Offers excellent wear resistance and core toughness. Meets EN 10084 standard. Custom sizes and heat treatment options available for demanding industrial applications.