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Flanges

MS Forged Flanges

Mild Steel Flanges come in various standards with various dimensions and pressure classes. Atlas Tubes india is a leading manufacturer and MS pipe flange supplier. The flanges have good hardness of 126 in Brinell hardness score and 370MPa minimum yield strength with 440MPa minimum tensile strength. These mechanical properties of the Mild Steel slip on flanges as well as other types of flanges are derived from the composition of the material.



The composition includes phosphorus, sulfur, carbon, manganese and around 99% iron. There are different types of flanges such as the MS blind flange which is used to close a pipe line where other flanges are used to connect more pipes. There are different types such as forged and Weld flanges mild steel based on the production. There are also different dimensions of the flanges ranging from ½ inches to 48 inches and differing wall thicknesses.

There are different standards such as ANSI B16.47. The pressure ratings of the Mild Steel Alloy welded flange range from class 400 to class 2500. There are different surface treatments available for the flanges such as the oil black paint, yellow transparent and other types. Different mechanical properties are categorized with tables such as the MS flange table e. Please feel free to contact us for more information on the different types of flanges such as the Mild Steel lap joint flange, the prices and a full catalog.

Specification Chart of Mild Steel Slip on Flanges



Specifications MS
Size Ranges From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB)
JIS Standards 5 K, 10K, 16K, 20 K, 30K, 40K, 63 K
Flange Face Type FF, RF, LMF, SMF, RTJ, LJF.
Pressure Classes Cl 150, Class 300, Cl. 400, 600, Class 900, Cl 1500 and 2500
Standards ASME | BS | DIN | ANSI | GOST | EN Flange
UNI/ DIN / EN Standard 6Bar, 10 Bar, 16Bar, 25 Bar, 40Bar

Chemical Properties of Mild Steel Lap Joint Flange


Composition Content
Sulfur, S ≤ 0.050 %
Iron, Fe 98.81 – 99.26 % (as remainder)
Carbon, C 0.14 – 0.20 %
Manganese, Mn 0.60 – 0.90 %
Phosphorous, P ≤ 0.040 %

MS Flange Table E Mechanical Properties Tensile Strength


Mechanical Properties Metric Imperial
Hardness, Knoop (Converted from Brinell hardness) 145 145
Hardness, Brinell 126 126
Tensile Strength, Yield 370 MPa 53700 psi
Elongation at Break (In 50 mm) 15.0 % 15.0 %
Poissons Ratio 0.290 0.290
Reduction of Area 40.0 % 40.0 %
Machinability (Based on AISI 1212 steel. as 100% machinability) 70 % 70 %
Modulus of Elasticity 205 GPa 29700 ksi
Bulk Modulus 140 GPa 20300 ksi
Shear Modulus 80.0 GPa 11600 ksi
Hardness, Vickers (Converted from Brinell hardness) 131 131
Hardness, Rockwell B (Converted from Brinell hardness) 71 71
Tensile Strength, Ultimate 440 MPa 63800 psi

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