Development of Large Diameter Heavy Wall Seamless Tee Fitting of WPHY-80 Grade for Low Temperature Pipeline Station Application

2018 ◽  
Author(s):  
Yu Liu ◽  
Tao Han ◽  
Yezheng Li ◽  
Zhanghua Yin ◽  
Peng Zhu ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Production Process ◽  
Large Diameter ◽  
Steel Production ◽  
Hot Extrusion ◽  
Gas Pipeline ◽  
Tensile Yield Strength ◽  
Fitting Production ◽  
Pipeline Project

This paper describes the development of large diameter heavy wall seamless tee fitting of WPHY-80 grade for low temperature pipeline station application. Steel tees with thicker wall generally tend to have low fracture toughness either in pipe body or in weld joint and low weldability. Therefore, improvement of fracture toughness and weldability are particularly important with respect to development of higher strength and thicker wall seamless tee fittings. For the requirement of the China-Russia Eastern Gas Pipeline Project, WPHY-80 large diameter, seamless heavy wall reducing outlet tees were developed, with DN1400 × DN1200 and 57mm wall thickness. The billet steel production process was electroslag remelting (ESR), and the tee fitting production process used a forging and hot extrusion combination. Finally, quenching and tempering were carried out. In this paper, the mechanical properties and microstructure of WPHY-80 seamless tee were studied. The results of mechanical testing showed that the tensile yield strength of the tee body was more than 590 MPa and also provided excellent low temperature toughness (CVN > 200 J at −45°C), which met the requirements of the specification for fittings applied in the China-Russia Eastern Gas Pipeline Project. In addition, the results of welding procedure qualification showed that the welding performance of the WPHY-80 seamless tee was excellent.

Factors Affecting the Decision to Apply Material Flows Cost Accounting MFCA in Thai Nguyen Steel Production Enterprises

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Nguyen Thi Kim Huyen
Keyword(s):  
Production Process ◽  
Environmental Performance ◽  
Steel Production ◽  
Cost Accounting ◽  
Environmental Accounting ◽  
Production Costs ◽  
Accounting System ◽  
Material Flows ◽  
Factors Affecting ◽  
Legal Documents

Applying the Material Flows Cost Accounting method in Thai Nguyen steel enterprises is one of the solutions to improve the efficiency in the production process, using input materials, and environmental performance, as well as to measure more correctly the production costs based on the change of the price calculation basic. Identifying the factors which affect the decision on applying MFCA to the accounting process of Thai Nguyen steel production enterprises by a direct survey is carried out with 119 accountants and managers working at 13 steel enterprises. The results show that applying MFCA to the accounting process in these enterprises depends on the strategies, capacities, the accounting system of those enterprises, and the system of legal documents related to environmental accounting.

Fractography, Fracture Toughness and Structural Turbulence Under Low-Temperature Shock Loading of a Nonequilibrium Titanium Alloy Ti–6Al–4V

2020 ◽  
Vol 55 (5) ◽  
pp. 633-642
Author(s):  
I. V. Vlasov ◽  
V. Ye. Yegorushkin ◽  
V. Ye. Panin ◽  
A. V. Panin ◽  
O. B. Perevalova
Keyword(s):  
Fracture Toughness ◽  
Titanium Alloy ◽  
Low Temperature ◽  
Shock Loading ◽  
Temperature Shock ◽  
Structural Turbulence

INVAR M93

Alloy Digest ◽  
2008 ◽  
Vol 57 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Low Temperatures ◽  
Bend Strength ◽  
Temperature Performance ◽  
Ni Content ◽  
Precision Alloys ◽  
Ni Alloy

Abstract Invar is an Fe-Ni alloy with 36% Ni content that exhibits the lowest expansion of known metals from very low temperatures up to approximately 230 deg C (445 deg F). Invar M93 is a cryogenic Invar with improved weldability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear and bend strength as well as fracture toughness and fatigue. It also includes information on low temperature performance as well as forming and joining. Filing Code: FE-143. Producer or source: Metalimphy Precision Alloys.

AMPCOLOY 495

Alloy Digest ◽  
1966 ◽  
Vol 15 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Low Temperature ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
Aluminum Bronze ◽  
High Manganese ◽  
Temperature Performance

Abstract AMPCOLOY 495 is a high manganese type of aluminum bronze recommended where high strength and corrosion resistance are required along with good weldability. It is recommended for marine equipment and ship propellers. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness, creep, and fatigue. It also includes information on low temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Cu-171. Producer or source: Ampco Metal Inc..

JESSAIR

Alloy Digest ◽  
1965 ◽  
Vol 14 (1) ◽  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Bend Strength ◽  
Steel Company ◽  
Temperature Heat ◽  
Temperature Heat Treatment ◽  
Manganese Chromium

Abstract Jessair is a manganese, chromium, molybdenum alloy steel combining the deep harding characteristics of air-hardening steels with the simplicity of low temperature heat treatment possible in many oil-hardening steels. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-157. Producer or source: Jessop Steel Company.

AISI 8630

Alloy Digest ◽  
1956 ◽  
Vol 5 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
High Tempering ◽  
High Toughness ◽  
Steel Mills ◽  
Temperature Performance

Abstract AISI 8630 is a chromium, nickel, molybdenum alloy steel. It is of the moderate deep hardening type and develops high toughness at high tempering temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-49. Producer or source: Alloy steel mills and foundries.

BOFORS 2RM2

Alloy Digest ◽  
1965 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Low Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Cast Steel ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract BOFORS 2RM2 is a hardenable stainless cast steel having good weldability, high mechanical strength and improved corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: SS-169. Producer or source: Aktiebolaget Bofors.

USS 9% NICKEL STEEL

Alloy Digest ◽  
1964 ◽  
Vol 13 (8) ◽  
Keyword(s):  
United States ◽  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Steel ◽  
Low Temperature Storage ◽  
United States Steel Corporation ◽  
Steel Corporation ◽  
Temperature Storage

Abstract USS 9% Nickel Steel was specifically developed for low-temperature storage vessels operating down to minus 320 F. It is recommended for cryogenic service. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. Filing Code: SA-166. Producer or source: United States Steel Corporation.

SUPERMET 2205

Alloy Digest ◽  
2004 ◽  
Vol 53 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Ferritic Stainless Steels ◽  
Nitrogen Levels ◽  
Temperature Performance ◽  
Low Temperature Performance

Abstract Supermet 2205 is a manual metal arc (MMA) electrode with enhanced chromium, molybdenum, and nitrogen levels. It is used for welding standard 22% Cr duplex austenitic/ferritic stainless steels. This datasheet provides information on composition, microstructure, hardness, and tensile properties as well as fracture toughness. It also includes information on low temperature performance as well as joining. Filing Code: SS-903. Producer or source: Metrode Products Ltd.

AWHF STEEL

Alloy Digest ◽  
1972 ◽  
Vol 21 (6) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Low Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Steel Company ◽  
Cold Forming ◽  
Temperature Performance ◽  
Minimum Yield

Abstract AWHF STEEL is a high-formability steel produced regularly at minimum yield strengths of 45,000 and 50,000 psi and for special applications at 55,000 and 60,000 psi. It is recommended for difficult cold-forming applications that involve bending or drawing and it has good weldability. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-275. Producer or source: Alan Wood Steel Company.

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