Estimating C, S, Si, Mn & P in Cast Iron & Steel

In summary, the carbon, silicon, manganese, and phosphorus content in cast iron and steel can vary depending on the grade and type. Cast iron typically has a higher carbon content of 2% or more, while carbon steels and stainless steels have lower levels. Impurities such as phosphorus and sulfur may also be present in varying amounts. The exact composition can be found by searching online or through specific classification systems.
  • #1
yamini
22
0
can anybody let me know the estimation of C,S,Si,Mn and P in cast iron and steel?

i will be thankful to all who will reply for this.:smile:
 
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  • #2
One could search with google for specific compositions or specifications.

Information on steels and iron alloys - http://www.key-to-steel.com/default.aspx?ID=Articles

The carbon content varies. Cast irons have 2% carbon or higher.
Classification of Cast Iron - http://www.key-to-steel.com/Articles/Art63.htm
http://en.wikipedia.org/wiki/Cast_iron

In Carbon Steels type ranges P (0.035-0.040%), S (0.040-0.050%) and in Stainless Steels P (0.040-0.045%), S (0.030%), and I've seen high purity SS with lower requirements in order to avoid stress corrosion cracking.

P and S maybe higher in Cast Irons, e.g. in ASTM A159 cast iron: P Max 0.12%, S Max 0.15%.

P and S are impurities, while C, Si and Mn are alloying elements whose content depends on the grade of steel/cast iron.

% is % by weight.
 
  • #3
thankyou for your help.
 

1. How do you estimate the levels of C, S, Si, Mn, and P in cast iron and steel?

To estimate the levels of these elements, a variety of analytical techniques can be used, such as spectrometry, x-ray fluorescence, and atomic absorption spectroscopy. These methods involve measuring the absorption or emission of light by the sample, which can then be correlated to the concentration of each element.

2. What is the purpose of estimating these elements in cast iron and steel?

The levels of C, S, Si, Mn, and P play a crucial role in determining the properties and quality of cast iron and steel. These elements affect the strength, ductility, and corrosion resistance of the material, making it important to accurately estimate their levels for quality control and production purposes.

3. How are the levels of these elements controlled in the production of cast iron and steel?

To control the levels of C, S, Si, Mn, and P, precise amounts of each element are added to the raw materials before melting and casting. This process, known as alloying, allows for the desired composition and properties to be achieved in the final product.

4. Can the levels of these elements be adjusted after production?

In some cases, the levels of these elements can be adjusted after production, such as through heat treatment processes. However, it is typically more challenging and less precise to alter the levels of these elements after casting, so it is crucial to accurately estimate and control them during production.

5. Are there any potential health or safety concerns when handling cast iron and steel with high levels of these elements?

Some of these elements, such as S and P, can be harmful to human health and the environment if not properly managed. For this reason, it is essential to follow proper safety protocols when handling and disposing of these materials and to accurately estimate and control their levels in production to minimize their impact.

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