Carbon Equivalent. The maximum carbon equivalent, based on heat analysis, shall be 0.47 for forgings with a maximum section thickness of 2 in. or less, and 0.48 for forgings with a maximum section thickness of greater than 2 in. Determined by below formula; CE = C + ASTM A706 - Portland BoltWeldability. In addition to the above chemical requirements, A706 rebar must also have a carbon equivalent (CE) not exceeding 0.55%. The way to calculate this is to plug the chemical composition figures for a given heat lot of steel into the following formula:
COVERING CAST AND EQUIVALENT FORGED VALVES Important Note:Data provided on this chart is for information purposes only. Always consult current ASME or API official publications to verify information and cross reference data. ASTM A216/A352 permits maximum carbon content of 0.30% for grade LCB/WCB but APV only allows 0.25% maximum. Carbon Equivalent And Weldability Speaking of Precision BlogDec 29, 2009 · The GE formula for Carbon Equivalency is CE= C+(Mn/6)+(Ni/20)+(Cr/10)+(Cu/40)+(Mo/50)+(Va/10). If this is less than .35 max, you should have no need to pre or post weld thermal treat in most cases. As long as CE is no more than .35, you probably wont need to preheat or post weld stress relieve your welded parts. above .35 CE, you may need Carbon Equivalent and Multiplying Factor for Carbon Equivalent Dearden and O'Neill (Ref. 1) used Reeve weldability tests to examine the relationship between steel's chemical composition and its maximum HAZ hardness. They proposed the following carbon equivalent to e HAZ hardness: P Mn Mo Cr+V Ni CE=C + + + + + ,, 2 6 4 5 15 1 This carbon equivalent was revised
Carbon steel materials are listed in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code with a room temperature tensile strength range from 40 kips per square inch (ksi) (275 megapascals [MPa]) up to 100 ksi (690 MPa). Estimating Welding Preheat Requirements for Unknown (a, b, c) Reported compositions for carbon equivalents, maximum water-quenched end of bar hardness and 90% complete martensite transformation temperatures were taken from Ref. 2. Steel compositions from Ref. 2 are listed in Table 2. Estimating Welding Preheat Requirements for Unknown (a, b, c) Reported compositions for carbon equivalents, maximum water-quenched end of bar hardness and 90% complete martensite transformation temperatures were taken from Ref. 2. Steel compositions from Ref. 2 are listed in Table 2.
Not on behalf metallurgist, but in general refer to applicable ASTM standard, the maximum carbon content is 0.23% and for carbon equivalent is 0.45% (max). However I Metallurgy Matters:Carbon content, steel classifications This can be determined by using the carbon equivalent formula, which we'll cover in a later issue. High-alloy Steels. For the most part, we're talking about stainless steel here, the most important commercial high-alloy steel. Stainless steels are at least 12 percent chromium and many have high nickel contents. The three basic types of National Primary Drinking Water Regulations US EPAMaximum Residual Disinfectant Level (MRDL) - The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants. 2 Units are in milligrams per liter (mg/L) unless otherwise noted. Milligrams per liter are equivalent to parts per million
Maximum allowable pressure and temperature ratings for petroleum refinery piping and chemical plant piping systems grade B with plane ends according ANSI/ASME B31.3 Process Piping. Pressure and Temperature Ratings of A-53 B, A-106 B, A333, A334 and API 5L Carbon Steel Pipes - Imperial Units ; For full table with higher Temperatures - rotate the SPECIFICATION FOR PRESSURE VESSEL PLATES, S54. Requirements for Carbon Steel Plate for Hydro uoric Acid Alkylation Service S54.1 Plates shall be provided in the normalized heat-treated condition. S54.2 The maximum carbon equivalent shall be as follows:Plate thickness less than or equal to 1 in. [25 mm]:CE maximump 0.43 Plate thickness greater than 1 in. [25 mm]:CE maxi-mump 0.45 STEEL INDUSTRY EMBRACES A992 - AISCThe carbon equivalent (CE) shall not exceed 0.50% except steel shapes not included in Groups 4 or 5 shall be supplied with a maximum of 0.45% if the carbon content is greater than 0.12%. The carbon equivalent shall be calculated using the following formula:CE= C +( Mn + Si)/6 + (Cu + Ni) /
The carbon equivalent (CE) shall not exceed 0.50% except steel shapes not included in Groups 4 or 5 shall be supplied with a maximum of 0.45% if the carbon content is greater than 0.12%. The carbon equivalent shall be calculated using the following formula:CE= C +( Mn + Si)/6 + (Cu + Ni) / The Great Minds of Carbon Equivalent - EWIa carbon equivalent equation that could cover a wide range of carbon contents for cold-cracking assessment. They reviewed the works of Beckert , Stout  and Sayffarth  to integrate all non-linear contributions and developed new equations for carbon equivalent and maximum hardness for steels with a carbon content between 0.01 and 0.30% : The Great Minds of Carbon Equivalent - EWIfor carbon equivalent and maximum hardness for steels with a carbon content between 0.01 and 0.30% :Where:logt -2.822CE (20) Where:CE II =C-Si/30+Mn/5+Cu/5+Ni/20+Cr/4+Mo/6+10B In 1983, Yurioka, et al  modified the Cu+Ni term in equation (18) and officially published it in the Welding Journal. Their carbon equivalent
7 rows · There are several commonly used equations for eing Carbon Equivalent. One example