Pipe Schedule Charts
The wall thickness associated with a particular schedule depends on the pipe size as can be seen from the charts below for some of the more common sized carbon steel pipes encountered.
Abbreviations used: NB - nominal bore, STD ... Read More...
Does Pipe Schedule Change With Pipe Size?
For all pipe sizes the outside diameter remains relatively constant. Therefore any variation schedule i.e. wall thickness, affects only the inside diameter. As the schedule number increases, the wall thickness increases, and the ... Read More...
What Standards Govern Pipe Schedule Sizes?
In the oil and gas and related down stream industries the the most common standards are
- API 5L
- ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe
- ASME/ANSI B36.19 Stainless Steel Pipe
Related posts:What is a pi... Read More...
What is a pipe schedule?
Pipes are designed to carry fluid, therefore their internal diameter is their critical dimension. This critical dimension is referred to as the nominal bore, appreviated as NB. Obviously, for pipes containing pressurised fluids t... Read More...
Hardness Conversion Table – Tensile Strength Brinell Vickers Rockwell HRB HRC
Applies for plain carbon and low-alloy steels and cast steel and to a limited extent for high-alloy and/or work hardened steel.
Hardness Conversion Table
Tensile
Strength
(N/mm2)>
Brinell Hardness
(BHN)
Vicke... Read More...
Density Densities of Materials Reference Table
Material
Density
(g/cm3)
Liquids
Water at 4 °C
1.0000
Water at 20 °C
0.998
Gasoline
0.70
Mercury
13.6
Milk
1.03
Solids
Magnesium
1.7
Aluminum
2.7
Brass
8.55
... Read More...
Titanium and Titanium Alloys Grades Chemical Composition Properties
The various Titanium Grades as defined by ASTM and ASME are numbered from 1 and upwards where all numbers except 6 and 8 are represented.
Most of the grades are of alloyed type with various additions of for example aluminium, va... Read More...
Proportional limit Mechanical Properties
The proportional limit is the highest stress at which stress is linearly proportional to strain. This is the same as the elastic limit for most materials. Some materials may show a slight deviation from proportionality while stil... Read More...
Elastic limit Mechanical Properties
The elastic limit is the highest stress at which all deformation strains are fully recoverable. For most materials and applications this can be considered the practical limit to the maximum stress a component can withstand and st... Read More...
Strength – Mechanical Properties
Strength has several definitions depending on the material type and application. Before choosing a material based on its published or measured strength it is important to understand the manner in which strength is defined and how... Read More...
Creep resistance
Creep is slow, temperature aided, time dependent deformation. Creep is typically a factor in materials above one third of their absolute melting temperature or two thirds of their glass transition temperature. Creep resistance is... Read More...
Thermal Properties
Thermal conductivity
The thermal conductivity is the rate of heat transfer through a material in steady state. It is not easily measured, especially for materials with low conductivity but reliable data is readily available for ... Read More...
Copper Corrosion Copper Pipe Corrosion Prevention Solution
Copper have good resistance to corrosion in urban, marine, and industrial atmospheres. The major factors that control the initial rate of attack on copper are moisture, temperature, and the level of pollution. Soon after exposure... Read More...
Aluminum Galvanic Corrosion
Galvanic corrosion occurs when two dissimilar metals having different electrical potentials are electrically connected.
Aluminum and Aluminum alloys become the anode in galvanic cells with most metals. The rate of galvanic corro... Read More...
Avoidance of Galvanic Corrosion
The methods for avoidance of galvanic corrosion are in general suggested by the above descriptions of the conditions necessary for its occurrence.
Don’t Mix Metals. If only one material is used in a construction the problem is... Read More...
Passive Surface Films and effect on Galvanic Corrosion
Stainless steel naturally form passive surface films this is what makes them “stainless”. This film also reduces the amount of current available for corrosion, so slows the corrosion rate down compared to some other galvanic ... Read More...
The Area Effect of Galvanic Corrosion
The relative area of the anode and cathode has a pronounced effect upon the amount of corrosion that occurs due to Galvanic Corrosion. A small anode (the less noble metal, such as aluminium) joined to a large cathode (the more n... Read More...
What Conditions are Needed For Galvanic Corrosion
For galvanic corrosion to occur there are three conditions which must be met:
Condition 1. Metals must be far apart on the galvanic series
The galvanic or electrochemical series ranks metals according to their potential, gen... Read More...