difference in between material M.S(mild steel) andA105

Carbon steel is sometimes referred to as 'mild steel' or 'plain carbon steel'. The American Iron and Steel Institute defines a carbon steel as having no more than 2 % carbon and no other appreciable alloying element. Carbon steel makes up the largest part of steel production and is used in a vast range of applications.

Typically carbon steels are stiff and strong. They also exhibit ferromagnetism (i.e. they are magnetic). This means they are extensively used in motors and electrical appliances. Welding carbon steels with a carbon content greater than 0.3 % requires that special precautions be taken. However, welding carbon steel presents far fewer problems than welding stainless steels. The corrosion resistance of carbon steels is poor (i.e. they rust) and so they should not be used in a corrosive environment unless some form of protective coating is used. A 105 is one of them

thanks for ur anser i do also wanted to know the chemcal composition of M.S and A105 and pls let me know a site where i can find chemcal composition off all the other Materials.

CHEMICAL REQUIREMENTS

Element Composition, %

Carbon 0.35 max

Manganese 0.60–1.05

Phosphorus 0.035 max

Sulfur 0.040 max

Silicon 0.10–0.35

Copper 0.40 max [Note (1)]

Nickel 0.40 max [Note (1)]

Chromium 0.30 max [Notes (1)(2)]

Molybdenum 0.12 max [Notes (1)(2)]

Vanadium 0.05 max

Columbium 0.02 max

GENERAL NOTE: For each reduction of 0.01% below the specified

carbon maximum (0.35%), an increase of 0.06% manganese above

the specified maximum (1.05%) will be permitted up to a maximum

of 1.35%.

NOTES:

(1) The sum of copper, nickel, chromium and molybdenum shall not

exceed 1.00%.

(2) The sum of chromium and molybdenum shall not exceed 0.32%.

200

Copyright ASME

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