304L Stainless Steel Bar Cold Rolled(angle/square/flat/ground)

304L Stainless Steel Bar Cold Rolled(angle/square/flat/ground)

Chemical composition: C:≤0.08 , Si:≤1.0 Mn:≤2.0 , Cr:18.0~20.0 , Ni:8.0~10.5, S:≤0.03 , P:≤0.035 N:≤0.1 Difference from 304L 304L more corrosion-resistant, 304L contain less carbon. 304 widely used, with good corrosion resistance, heat resistance, low-temperature strength and mechanical...
Product description

Chemical Composition

C ≤ 0.08 

Si ≤ 1.0  

Mn ≤ 2.0  

Cr: 18.0~20.0 

Ni: 8.0~10.5

S ≤ 0.03 

P ≤ 0.035

N ≤ 0.1


Difference from 304L

304L more corrosion-resistant, 304L contain less carbon.

304 widely used, with good corrosion resistance, heat resistance, low-temperature strength and mechanical properties, stamping bending, such as good thermal processing, no heat treatment hardening phenomenon (non-magnetic, the use of temperature -196°C~800°C).

304L after welding or after the elimination of stress, its resistance to intergranular corrosion is excellent, in the case of heat treatment, can also maintain good corrosion resistance, the use of

temperature -196°C-800°C.


Mechanical Properties

Tensile Strength (MPA): 520

Yield Strength (MPA): 205-210

Elongation Rate(%): 40%

Hardness: HB187 HRB90 HV200


Quality Characteristics

Directory

Basic   Organization



Representative   Steel

STS304

STS430

STS410

Heat

Solid   Melt Heat Treatment

Annealing

Quench   after annealing

Hardness 

Processing   Hardening

Micro-hardening

Small   amount of sclerosis

Main   Use

Interior   and exterior decoration, kitchenware, chemical scale, aviation machine

Also   called stainless iron, more used in building materials, automotive parts,   household appliances, because of safe and non-toxic, widely used in food   tableware, kitchen utensils, lunch boxes and so on

Brazing,   cutting machine parts, hospital appliances, surgical appliances

Corrosion   Resistance

High

 


High
 
 



304 Stainless Steel Rods

stainless steel hexagonal rods, stainless steel square steel, stainless steel polishing rods, stainless steel grinding rods, stainless steel bright rods, stainless steel rods, stainless steel rods, stainless steel easy to stick, SUS303 bar, SUS416 Bar, our products cutting performance and drilling performance, fine, accurate and stable size, good finish, Easy cutting can be processed a variety of high-precision parts.


304(18Cr-8Ni) Material

As a widely used steel, with good corrosion resistance/heat resistance, low-temperature strength and mechanical properties, stamping/bending, such as good thermal processing, no heat treatment hardening phenomenon (non-magnetic, then with temperature -196℃~800℃). Usage: Household goods (1/2 kinds of tableware/cabinet/indoor pipeline/water heater/boiler/bathtub), auto parts (windshield wiper/muffler/molded products), medical appliances, building materials, chemicals, food industry, agriculture, marine components.


American and GB Thickness

28GA=0.015inches=0.38mm

26GA=0.018inches=0.46mm

24GA=0.024inches=0.61mm

22GA=0.030inches=0.76mm

20GA=0.036inches=1.00mm

18GA=0.048inches=1.25mm

16GA=0.060inches=1.60mm

14GA=0.075inches=2.00mm

12GA=0.105inches=2.70mm


The rust phenomenon of 304 may have the following reasons:


1. The presence of chlorine ions in the use of the environment

Chlorine ions are widespread, such as salt/sweat/seawater/sea breezes/soil, etc. Stainless steel in the presence of chloride ions in the environment, corrosion quickly, or even more than ordinary low-carbon steel.

Therefore, the use of stainless steel environment requirements, but also need to often wipe, remove dust, keep clean and dry. The United States has an example: an enterprise with an oak container to contain a solution containing chloride ions, the container has been used nearly hundreds of years, the last century 90 's plan to replace, because the oak material is not modern, the use of stainless steel replacement 16 days after the container due to corrosion leakage.


2. NO Solution Treatment

The alloying elements were not dissolved into the matrix, resulting in low matrix microstructure and poor corrosion resistance.


3. This material without titanium and niobium has a natural tendency to intergranular corrosion.

The intergranular corrosion can be reduced by adding titanium and niobium, and then with stable treatment.

In the air or chemical corrosive medium can resist corrosion of a high alloy steel, stainless steel is a beautiful surface and corrosion-resistant performance, do not have to go through the surface treatment of plating color, and play stainless steel intrinsic surface properties, used in a variety of steel, usually referred to as stainless steel. Represents the performance of 13 chromium steel, 18-8 nickel and other high alloy steels.

From the metallographic point of view, because stainless steel contains chromium and make the surface of a very thin chrome film, this membrane separates from the steel and the oxygen in the invasion of corrosion resistance.

In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium.

304 is a versatile stainless steel that is widely used in the production of equipment and parts requiring good comprehensive performance (corrosion resistance and formability).

304 stainless steel is a brand of stainless steel manufactured in accordance with ASTM standards in the United States. 304 is equivalent to 0cr19ni9ti stainless steel in China. 304 Chromium 18%, nickel containing 9%, carbon content ≤ 0:08%

304L is a variant of 304 stainless steel with low carbon content, used for welding occasions. The lower carbon content minimizes the amount of carbide precipitated in the heat-affected zone near the weld, and the precipitation of carbides may lead to intergranular corrosion in some environments (weld erosion).

 


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