What is bright annealed stainless steel tube and why annealing is performed?
Bright annealing is a heat treatment process performed in a controlled atmosphere. It helps to achieve a bright, polished and reflective surface finish on the stainless steel tube. Bright Annealed Stainless Steel Tube comes with the following features:
What is the difference between quenching and SS bright annealed tube?
Bright Annealed Stainless Steel Tube
BA Finish Pipe
Bright Annealed Tubes
What is the difference between sintering and annealed tubing?
Sintering is a process used to manufacture metal or ceramic components from powdered materials. It results in a solid, porous, and interconnected structure. Annealing is a heat treatment process used to improve mechanical properties. It results in increased ductility, reduced hardness, and improved machinability.
Table of Contents
Specifications of Bright annealed stainless steel tube
|Welded Tube standards||Seamless Tube standards||Tolerance||Grade|
|ASTM A269, A249,EN10217-7, A789||ASTM A269, A213, A789||
a) Outer Diameter: +/- 0.02mm
b) Thickness: +/- 10% OR as customer request
c) Length: +/- 1mm
|304,316,304L, 316l, 316Ti, 310, 317, 317L, 347,321|
|Bright Annealing||3 – 50.8 Milimeter||Soft and hard||0.3 – 3 Milimeter|
|U Bend, Round, Coiling||Boiler, Heat Exchanger, Condenser, Heater, Cooler, Instrumentation Tubing||BA/NO.1/ 2B/NO.3/8K/ NO.4/2D/ HL/1D||1040 degree|
|Up to 25m||Pickled, Polished, Bright Annealed||UT (Ultrasonic Testing), ET (Eddy Current Testing), HT (Hydrosatic Testing)||Seamless/Welded|
|Speed||Deep processing||Thickness tolerance||Test certificates|
|100 ft./min [30 m/min]||Corrugated Tube, chamfering, Thread processing||±0.03mm/ as required||MTC, IBR & Third Party Inspection.|
BA finish pipe types
SS Bright Annealed Tube
Bright Annealed Seamless Tube
Bright Annealing Stainless Steel Tubes
Bright Annealed Automobile Tubes
304 Bright Annealed Stainless Steel Tube
Stainless Steel Bright Annealed Tube
304 BA Stainless Steel Tubing
Bright Annealed Tube
304 Stainless Steel Bright Annealed Tubes
Bright annealed tubes sizes
SS bright annealed tube application
Chemical composition of Bright annealed seamless tube
|304||0.08 max||0.030||18.0-20.0||–||2.0 max||0.75 max||0.045||8.0-10.5||0.10|
|304L||0.030 max||0.030||18.0-20.0||–||2.0 max||0.75 max||0.045||8.0-12.0||0.10|
|304H||0.04-0.10||0.030||18.0-20.0||–||2.0 max||0.75 max||0.045||8.0-10.5||–|
|316||0.08 max||0.030 max||16.00 - 18.00||2.00 - 3.00||2.0 max||1.0 max||0.045 max||11.00 - 14.00||67.845 min|
|316L||0.035 max||0.030 max||16.00 - 18.00||2.00 - 3.00||2.0 max||1.0 max||0.045 max||10.00 - 14.00||68.89 min|
Bright annealing stainless steel tubes mechanical properties
|Grade||Density||Tensile Strength||Melting Point||Yield Strength (0.2%Offset)||Elongation|
|304/304H/304L||8.0 g/cm3||Psi – 75000 , MPa – 515||1400 °C (2550 °F)||Psi – 30000 , MPa – 205||35 %|
|316/316L/316H||8.0 g/cm3||Psi – 75000 , MPa – 515||1400 °C (2550 °F)||Psi – 30000 , MPa – 205||35 %|
Bright annealed automobile tubes advantages
Equivalent of 304 bright annealed stainless steel tube
|S30400||1.4301 / 1.4307||TP304|
|S31600 / S31603||1.4401 / 1.4404||TP316 / TP316L|
|S31609||1.4919 / 1.4918||TP316H|
Features of Stainless steel bright annealed tube
Stainless steel bright annealed finish
A Stainless steel bright annealed finish is manufacture by heat-treating (annealing) in a controlled atmosphere furnace. It has a reflective appearance, bright, but may have some cloudiness and other flaws. it offers high strength, excellent corrosion resistance, and durability.
Bright annealing heat treatment of SS tubes
bright annealing is performed at 1550–1800°F (845-980°C)
Bright annealing process for stainless steel
The following steps are involved in the bright annealing of stainless steel:
What is Bright annealed seamless tube?
The seamless Bright Annealed Tubes come without any welded seams. They are characterized by BA process which enhances its surface finish and overall aesthetics. They possess precise dimensional tolerances with high strength and great resistance to corrosion.
The seamless 304 bright annealed stainless steel tube is stronger than the welded ones and they offer better leakage protection.
What is Cold drawn bright annealed seamless tubes?
The cold drawn Stainless Steel Bright Annealed Tube is manufactured by the cold drawing process after which it has undergone bright annealing. The tubing comes with uniform tolerance and enhanced machinability. They also possess greater strength and tolerances than the hot rolled tubes. They have a high strength-to-weight ratio and they can be processed so as to offer a combination of some desired characteristics.
What is bright annealed finish RA?
Ra values are used to assess various surface roughness levels. This ranges in values from to 0.4 meter Ra (extremely smooth) to 12.5 meter Ra (very rough).
What is the maximum bright annealing temperature of ss tubes?
55°C to 72°C
How is bright annealed stainless steel tubes made?
The stainless steel is annealed in an inert gas atmosphere after cold rolling during production.This produces a shiny, reflective, smooth surface structure which, depending on the manufacturer, can be close to a mirror-polished ss of the lower quality grades.
What is the maximum bright annealed surface roughness value of stainless steel tubes?
4 to 20 microinches (µin) or 0.1 to 0.5 micrometers (µm)