Ultimate Tensile strength, MPa (ksi) Yield strength, MPa (ksi) Elongation in 50 mm (2 in.), % Brinell Hardness, HB (500 kgf load 10 mm ball) 1.6mm (1/16 in.) thick specimen:12.5mm (1/2 in.) thick specimen:6061-O:125 (18) 55 (8) 25:27:30:6061-T4, T451:240 (35) 145 (21) 22:22:65:Al 6061-T6, T651:310 (45) 275 (40) 12:15:95:Alclad 6061-O:115 (17) 50 (7) 25 ENGINEERING CONCEPTS:Relationship Between Hardness Mar 07, 2001 · A comparison of ultimate tensile strength with Brinell hardness is shown in Fig. 2 for several metals. Many of the copper-base alloys have a much higher UTS than predicted and the gray irons tend to have a much lower UTS than that predicted. In the case of gray iron, the graphite flakes serve as crack initiators in tension, whereas these flakes
Both tensile strength and hardness are indicators of a metals resistance to plastic deformation. The stress-strain curve (Figure 1) above is a good way of graphically demonstrating this. The ratio of stress to strain is the elastic modulusstiffness, but the stress, and only the stress, defines the strength Hardness Conversion Table:Brinnel/Rockwell Tensile Brinell Hardness:Rockwell Hardness:Tungsten Carbide Ball 3000 kg:A Scale 60 kg:B Scale 100 kg:C Scale 150 kg:Tensile Strength (approx.) _ 86 _ 68 _ _ 85 _ 68 _ _ 85 _ 67 _ 767:84 _ 66 _ 757:84 _ 66 _ 745:84 _ 65 _ 733:84 _ 65 _ 722:83 _ 64 _ 712 _ _ _ _ 710:83 _ 63 _ 698:83 _ 62 _ 684:82 _ 62 _ 682:82 _ 62 _ 670:82 _ 61 _ 656:81 _ 60 _ 653:81 _ 60 _ 647:81 _ 60 _ 638:81 _ 59:329,000: Hardness and Tensile Strength of Steels:Brinell and Rockwell Hardness. Tungsten Carbide Ball 3000 KG. A Scale 60 kg. B Scale 100 kg. C Scale 150 kg. Tensile Stength (approx.) . 86.
To convert Rockwell Hardness to Tensile Strength, use a polynomial equation developed by modeling the tested materials. The general formula is:TS = c3 * RH^3 + c2 * RH^2 + c1 * RH + c0. RH stands for the Rockwell Hardness in the formula, and TS represents Tensile Strength.. What is Hardness and Tensile Strength - Definition In this case, the ultimate tensile strength (in psi) approximately equals the Brinell Hardness Number multiplied by 500. Generally, a high hardness will indicate a relatively high strength and low ductility in the material. In industry, hardness tests on metals are used mainly as a check on the quality and uniformity of metals, especially during heat treatment operations. The tests can generally be applied eFunda:Convert Hardness:Tensile Strength (Approx.)Approx. TS. An approximate relationship between the hardness and the tensile strength (of
79 rows · Hardness and tensile strength table Brinell and Rockwell:Brinell hardness 3000 Kg. load