Technical

Application & product forms in process piping The ASTM A537 Class 1 steel plate with a thickness no greater than 64 mm [2-1/2″] can be applied to ASME B31.3 process piping. The plates shall be normalized with minimum yield strength and tensile strength of 50 ksi [345 MPa] and 70 ksi [485 MPa], respectively. The UNS designation of ASTM A537 …

ASTM A350 LF3 forgings can be applied to services designed in accordance with ASME B31.3 Process Piping. According to the Code, ASTM A350 LF3 may be used in general metallic piping or high pressure piping applications. For the former, basic allowable stresses in tension are listed in Table A-1 & Table A-1M; for the latter, allowable stresses in tension are …

Tensile strengths of ASTM A350/ ASME SA-350 LF3 at elevated temperatures *Temp.: metal temperature, °C, not exceeding; *T.S.: tensile strength, MPa. *The minimum tensile strength at room temperature is 485 MPa. *All values are extracted from Table U of ASME BPVC Section II Part D. Yield Strengths of ASTM A350/ ASME SA-350 LF3 at elevated temperatures *Temp.: metal temperature, °C, …

The maximum allowable stress values and design stress intensity values of ASTM A350/ ASME SA-350 LF3 are listed in ASME Boiler and Pressure Vessel Code Section II Part D Table 1A, Table 5A, and Table 2A, respectively. Maximum Allowable Stresses *ASTM A350/ ASME SA-350 Gr. LF3, both Class 1 and Class 2, applicable to Section III Classes 2 & 3, …

ASTM A350 LF3 is a low-alloy steel grade designated as “3.5Ni steel” or “3-1/2Ni steel”. Forgings made of ASTM A350/ ASME SA-350 LF3 may be furnished in Class 1 or Class 2 with minor difference in Charpy V-notch energy requirements. This nickel steel is primarily applied for low-temperature service requiring notch toughness testing. However, it may also applied to services …

ASTM A350/ ASME SA-350 LF2 is a steel grade mainly applied to low temperature service. However, according to ASME B31.3 and ASME Boiler and Pressure Vessel Codes, it can also be used for high temperature applications. A very common use is that they can be used for the manufacture of tubesheets for heat exchangers and heaters in high temperature and …

Class 1 and Class 2 of ASTM A350/ ASME SA-350 grade LF2 have the same chemical composition and mechanical properties. Even the allowable stresses of Class 1 and Class 2 in ASME Codes are the same. The main characteristic that distinguishes Class 1 from Class 2 is its minimum applicable temperature. The minimum applicable temperatures are -50°F [-46°C] for LF2 …

Both Class 1 and Class 2 of ASTM A350 LF2 forgings can be used for piping applications of ASME B31.3. The piping applications include common process piping and high pressure piping of of Chapter IX. The basic allowable stresses in tension and allowable stresses in tension for ASTM A350 LF2 are listed in the Table A-1 and Table K-1, respectively. …

The Section II Part D (M) of ASME Boiler and Pressure Vessel Code has specified values of tensile strength and yield strength at elevated temperatures for ASTM A350/ ASME SA-350 LF2 in metric units. These values are tabulated in Table U and Table Y-1, respectively, which are suitable for use in design calculations. Tensile Strengths at Elevated Temperatures *Table U; …

Code applicability & Maximum Temperature Limits Both Class 1 and Class 2 of ASTM A350/ ASME SA-350 Gr. LF2 can be used for applications in accordance with a set of ASME Boiler and Pressure Vessel Codes. These applicable Codes and maximum temperature limits are tabulated in the table below. The UNS number of Gr. LF2 is K03011; P-number is 1; …

The ASTM A350 LF2 is a forged carbon/ low-alloy steel grade for forged flanges, forged fittings and valves intended primarily for low-temperature service and requiring notch toughness testing. There are two Classes for the LF2 steels: Class 1 and Class 2. Chemical Composition Requirements *The sum of Cu, Ni, Cr, V, and Mo shall not exceed 1.00% on heat analysis. …

Technical Drawing Oval or octagonal ring shapes may be provided for the M/RTJ ring spacer flange. Only the oval ring is illustrated for simplicity. Ring dimensions shall be in accordance with ASME B16.20, except H = C + T, where C is the ring height specified in ASME B16.20 and T is the thickness of the paddle spacer. Besides, B: …