Sep 18, 2002 · When a box of welding electrodes is opened, what precautions are required for their protection from contamination? 8.7.2. When dual-certified material (i.e., A36/A572 Grade 50) is specified, should welding be performed in accordance with AWS Group I or Group II requirements? 8.7.3. ASTM A572 - SSABASTM A572. The ASTM A572 specification is the Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel for plates, structural shapes, sheet pilings and bars. ASTM A572 includes five grades with specified minimum yield strengths of 42, 50, 55, 60, and 65 ksi, respectively. For applications where notch toughness is
When welding low and medium carbon steels, the 70XX electrodes and E70S-3-6 MIG wires and E7XT-X flux cored electrodes can be used. When welding low alloy 1 1/4 Cr 1/2 Mo and 2 1/4 Cr 1 Mo with up to 0.05% max carbon, typically 8018-B2L / 9018-B3L (L = low carbon) can be used. When welding higher strength alloys or when tempering and quenching Filler Metals - Welders, Welding Wire, Welding First, select electrode based on the joint requirements. If code, specifications, or contract documents require notch toughness, electrode selection should be limited to those that meet the specific application requirements. (4) Best electrodes are Fleetweld 5P, 5P+, 35 or 35LS. (5) Best electrodes are Fleetweld 35, 180, 7, 37 or 47. I Steel Interchange - AISCties of A36/A572 Gr 50 dual grade steel and of A36 steel. Both steels are structural steels that are pro duced by Chaparral Steel in Midlothian, Texas. A36 steel is familiar throughout the industry. A361A572 Gr 50 is a steel formulated to meet the overlapping chemical and mechanical specifica tions for both ASTM A36 and A572 Grade 50 steels.
An example here would be welding ASTM A572 Grade 50 to AISI/SAE 4140, in which the former material has both chemistry and mechanical requirements, but the latter has only a chemistry requirement. It is important to determine the weldabilty of dissimilar strength materials prior to joining them together for a number of reasons. Structural Steel Welding and Automation Lincoln ElectricThe main horseshoe itself was formed from two box girders of A572 grade 50 carbon steel. The fabrication is performed in accordance with the structural welding Code of AWS D1.1. The girder sections are 2 inches thick, 6 feet long and 2.5 feet wide. They were shipped in 40-foot sections and assembled on site. boehler-weldingA907 Gr. 30, 33, 36, 40; A935 Gr.45; A936 Gr. 50; API 5 L Gr. B, X42-X52 BÖHLER Standard EN AWS Welding process Typical analysis % Typical mechanical properties Ø mm Approvals Characteristics and applications Base metals SMAW C 0.07 Si 0.3 Mn 0.5 YS 430 N/mm2 TS 500 N/mm2 EL 26% CVN 75 J 2.5 3.2 4.0 - Rutile covered electrode with
Metallurgy & Welding 8-2 Commentary:Many WSMF structures designed in the last 10 years incorporated ASTM A36 steel for the beams and ASTM A572 grade 50 steel for the columns. This provided an economical way to design structures for the strong column - weak beam provisions contained in the building code. Recent studies conducted