Alloy Steel Round Bars By Wuxi Fuhong Special Steel Co.,ltd.

Since 2007, our company is committed to manufacture, export and supply a premium quality array of Alloy Steel Round Bars. These bars are manufactured with the use of exceptional quality steel and the contemporary techniques in tune with the defined quality standards. These bars are used in various industries like automotive, construction, mining, railways, etc., for fabrication of industrial goods and different structures. Additionally, clients can avail these Alloy Steel Round Bars in various lengths and thicknesses at negotiable rates from us.Features: Anti corrosive finish Excellent hardness Compact design High welding strength Specifications: C: 0.28-0.33; Si: 0.15-0.35; P: max0.035; S: max0.040; Mn: 0.40-0.60;   Cr: 0.80-1.10; Mo: 0.15-0.25 Equivalent Grades Werkstoff: 1.7218 BS: 708A25 / 708M25 JIS: SCM430 DIN: 25CrMo4 Form of AISI 4130 Round / Flat / Square Bars, Shafts, Rollers & Blocks. Size of 4130 Steel As Forged:- Round bar Size: Dia.80-1,000mm Length: 3,000-10,000mm Square bar Size: 150x150-600x600mm Length: 3,000-8,000mm As Rolled:- Round Bar Size: Dia.10-300mm Length: 3,000-10,000mm (can be Customized) (Forged Flat Bars, Rollers, Shafts & Blocks can be Customized)Dimension Tolerance Black surface:- Forged sizes upto 500mm (-0/+5mm) Forged sizes above 500mm in diameter (-0/+8mm) Machined surface to all sizes (-0/+3mm) AISI 4130 Steel Surface Condition The material shall be free of black spots, decarburized layer and cracks or other defects, if the bars are to be delivered with machined-surface.    Quenched & Tempered (+QT) of SAE 4130 SteelSlowly heat 4130 steel to 870-890oC; soak at this temperature and then quench in oil; temper as soon as the AISI 4130 reach at room temperature; heat uniformly to appropriate temperature of 400-570oC; withdraw the material from furnace & cool in the air. AISI 4130 Alloy Steel AnnealingSlowly heat AISI 4130 to 850oC and permit sufficient time for the steel to be heated. Then cool in furnace to 480oC, followed by air-cooling. Other Technical Specification: EAF/BOF+LF+VD melting process resulting in ingots Both ends cut by saw Forging Ratio: minimum 3:1 Grain size of final product: more than 5 according to ASTM E112, preferred more than 8 Ultrasonic test: As per SEP1921 Class C/c or D/d Quality Certificate:In accordance of EN10204 3.1, with mechanical properties (Yield point, Tensile strength, Elongation after fracture, Impact energy, Percentage decrease of area after fracture) and Hardness.