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Technical requirements, specifications and literature for various piping components and equipment.

Tensile & Yield Strength of ASTM A192 Tube in ASME Codes

The tensile strength and yield strength of the ASTM A192/ ASME SA-192 tube are 325 MPa and 180 MPa at room temperature, respectively. The Part D of ASME Boiler & Pressure Vessel Code Section II has stipulated tensile strengths and yield strengths at elevated temperatures. These values are only used for design calculation purpose. Tensile Strengths of ASTM A192 at …

ASTM A192 Boiler Tubes Applied to ASME BPVC

Applicability & Maximum Temperature ASTM A192/ ASME SA-192 carbon steel seamless tubes are widely used for the construction of boilers and superheaters in cane sugar industry, fossile thermal plant, chemical and petrochemical industry. They are also called as “boiler tubes” or “superheater tubes”. The boiler tubes made of ASTM A192 steel can be applied to services in accordance with ASME …

Hardness Tests for ASTM A179 Seamless Tubes

Rockwell hardness tests shall be made on specimens from two ASTM A179 seamless tubes from each lot. The term lot applies to all tubes, prior to cutting, of the same nominal diameter and wall thickness which are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes …

Tensile & Yield Strengths of ASTM A179 Tubes

ASME BPVC Section II Part D has listed the tensile strength values and yield strength values of ASTM A179 seamless tubes at different temperatures in Table U and Table Y-1, respectively. These values are to be used in design calculations according to the rules of the construction codes. Tensile Strengths of ASTM A179 Tubes at Temperatures *Temp.: metal temperature, °C, …

ASTM A537 Class 1 Applied to ASME B31.3

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 …

Allowable Stresses of ASTM A350 LF3 in ASME B31.3

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 & Yield Strengths of ASTM A350 LF3

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, …

Allowable Stresses & Design Stress Intensity of ASTM A350 LF3

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 Applied to ASME BPVC

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 …

Can ASTM A350 LF2 Be Used at High Temperatures?

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 …

ASTM A350 LF2: Class 1 vs. Class 2

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 …

Allowable Stresses for ASTM A350 LF2 Applied to ASME B31.3

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. …

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