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Grade 40Mn material is quality carbon structural steel. 40Mn quality carbon structural steel bar is normally delivered in the hot rolled or hot forged state. It may be also delivered in the heat treated (annealed, normalized or high temperature tempered) if the buyer so requests and if so stated in the contract.
40Mn Bars Size:
Technique: forged, hot rolled
Hot rolled round bars: 8mm to 300mm
Forged round bars :10mm to 1000mm
Flat bars: thickness: 6mm to 150mm
Composition:
C: 0.37 ~ 0.44
Si: 0.17 ~ 0.37
Mn: 0.70 ~ 1.00
S: ≤0.035
P: ≤0.035
Cr: ≤0.25
Ni Ni: ≤0.30
Cu: ≤0.25
The hardness of 40Mn steel material for cutting work or for cold drawn material in the delivery state should comply with the stipulation in 229HBS(non-heat treated steel) and 207HBS(annealed steel). The hardness of non-annealed steel, if the supplier can guarantee the conformance, the test may be omitted. The hardness indexes after high temperature tempering and normalization shall be determined by agreement between the supplier and the buyer.
Welcome to send the 40Mn steel specification to us for quotation.
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
If you are interested in our company or products, welcome to visit our company or local offices; you can also get contact with us through online consulting, demand table submission, e-mails and telephones. Our staff shall wholeheartedly provide product information, application knowledge and good service for you.
BBN SHIP STEEL FACTORY
