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Gautam tubes have been engaged in supplying CARBON STEEL ASTM A181 Flanges to national and international customers. We stock industrial flanges in different specifications and dimensions and also we supply these in customized dimensions for multiple engineering applications. We are specialist in supplying a qualitative range of high grades flanges that are useful in critical and engineering applications.
CARBON STEEL ASTM A181 Flanges are the most significant viable steel alloy. The high amount of carbon content increases strength and hardness of the flanges. Carbon steel is from the steel family having up to 2% of carbon. Due to the martensite nature, it has increased weldability. Property of carbon steel is based on the elements that rely on structure of flanges. Carbon content is present in all grades which are the source of hardening. However, strength is attained by the quenching operation.
ASTM A181 flanges higher hardness and strength and resistance to wear and abrasion, it depends on the carbon structure. Carbon steel flanges have good machinability, toughness, and ductility. Under top rolling mills, cold drawing operations are performed on flanges.
A181 flanges can be cold or hot worked and can be heat treated to attain desired properties and magnetic structures. On A181 flanges carbon content is added to improve wearability, however, these flanges can be directly hardened. Moreover, carburizing operations are also performed for hardening of flanges. The high levels of carbon increase the brittle structures. The carbon steel is molten into the cast and it is readily formed into its final dimensions and finishes to prevent any type of oxidations. Carbon steel ASTM A181 readily formed into any complex designs. The rolling operations can be followed by cold and hot process depends on the composition and end application requirements.
The cold-forming operations of CARBON STEEL ASTM A181 Flanges are done below its recrystallize temperatures. Moderate forces are applied to the microstructure of flanges to derive the desired grain structure of flanges. This change in the structure of flanges makes it hardest and difficult to fail in adverse environments. However, this operation can cause embrittlement and can be eliminated by doing heat treatment operations.
Specifications : ASTM A181 / ASME SA181
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc
Size : 1/2" (15 NB) to 48" (1200NB)
Class : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
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| Grade | C | Mn | P | S | Si |
| Carbon Steel A181 | 0.35 max | 1.10 max | 0.050 max | 0.050 max | 0.10-0.35 |
| Grade | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Reduction of Area,% |
| Class 60 | 60 min | 30 min | 22 min | 35 min |
| Class 70 | 70 min | 36 min | 18 min | 24 min |
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