If the 4130 forging is such that some sections will finish much colder than others then a uniform structure will not be obtained and for best results a spheroidizing anneal at around 750 º C (1380 º F) may be used. This treatment is best used for parts with simple shapes. In this way a structure suitable for machining may be obtained. If the 4130 alloy steel is forged at too low a temperature, there is a risk of the formation of a non-uniform structure in certain areas of the forged part, necessitating a normalizing treatment, prior to further heat treatment.Īnnealing of 4130 steel forgings may be carried out by transferring the part straight from the forging operation to a furnace held at a suitable temperature, around 860º C (1575 º F) for annealing, holding for a suitable time then furnace cooling. The lower the finishing temperature from forging, the finer will be the grain size. Based on 100% machinability for AISI 1212 steel.)ĪSTM A29 Grade 4130 steel should be forged between 1230 and 950 º C (22 º F). Hardness, Vickers (Converted from Brinell hardness) Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) Hardness, Rockwell B (Converted from Brinell hardness) Hardness, Knoop (Converted from Brinell hardness) Specific Heat (Btu/lb/Deg F – ) 0.114ĪISI 4130 Steel Mechanical Properties Properties.AISI Alloy 4130 Steel Mechanical Properties ASTM 4130 Steels And Equilvalents Chemical CompositionĤ.AISI 4130 Steel Specification and Relevant Standards.

MOQ: 10 tons per size for new production. Surface Finish: Black, Rough Machined, Peeled, Turned or as per given requirements. Please check below technical data of ASTM 4130 steel material.Ĥ130 Steel Round Bar: diameter 8mm – 3000mmĤ130 Steel Plate/Flat Bar: thickness 10mm – 1500mm x width 200mm – 3000mmĤ130 Steel Tube: outer diameter 4mm to 800mm It shows good overall combinations of strength, toughness and fatigue strength.Īs one of leading supplier of 4130 steel alloy material, Otai is reliable in 4130 round bar and steel plate materials. AISI 4130 steel is usually supplied as round bar commonly in the hardened and tempered condition.ĪISI/SAE 4130 steel grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength up to around 315º C (600º F). Annealing ASTM 4130 alloy steel offers excellent ductility.

With the proper heat treatment it is also readily machined.

It is similar to 4140 steel which has a higher carbon level (0.28-0.33%), giving 4130 material improved weldability, at the expense of through thickness strength. ASTM 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0.28-0.33% Carbon, 0.8-1.1% Chromium and 0.15-0.25% Molybdenum. AISI 4130 alloy steel is a medium carbon, low alloy steel in ASTM A29 standard.

Engineering curve aisi 1020 table test