ASTM A514 PDF

More A Plates shall be subjected to heat treatment to conform to the tensile and hardness requirements for thickness, tensile strength, yield strength, elongation, reduction of area, and Brinell hardness. Heat and product analysis shall conform to the chemical requirements for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, titanium, zirconium, copper, boron, and columbium. Conformance to required mechanical properties shall be determined by tension and hardness tests.

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Join Discussion Cost and efficiency dictate manufacturing and fabricating trends in most industries. In addition to implementing lean work flow practices—better, faster transportation and processing and minimal inventory—many companies turn to the use of higher-strength, lighter-weight materials to reduce costs and improve welding productivity.

Although they have been available for many years, they continue to pose some distinct challenges for welders. Welding these materials successfully is a matter of understanding some key factors, including filler metal choices and preheating and interpass heat requirements. The material thickness affects the mechanical properties. One of the reasons for the difference in properties among these thicknesses is the quenching.

The thicker the material, the slower the quench rate, which results in lower minimum yield and tensile strengths. Typically, this material is used for structural applications. In many cases, the term structural refers to buildings, but the material also is used in heavy equipment structures to reduce weight and improve payload capacity, such as in railcars and their components, large mining truck frames, semitrailer frames, and crane boom sections.

Because the typical hardness of the materials is 22 to 27 Rockwell C, it is also used for wear strips, cutting edges, and side cutters. Typical applications are backhoe buckets and other wear components in earthmoving equipment.

Making the Choice: Filler Metals Welding A is not complicated when some precautions, especially with filler metal choices, are used. A primary concern is filler metal hydrogen content.

You should not use filler metals that deposit weld metal with diffusible hydrogen content greater than 8 ml per grams of deposited weld metal. A is sensitive to diffusible hydrogen, which may result in hydrogen cracking. Figure 1.

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